[Characteristics and Comprehensive Quality Assessment of Heavy Metals in Soil-crop System of High Geological Background Area].

Heavy metals （HMs） pollution in agricultural soil-rice systems has attracted worldwide attention as it directly threatens regional ecological security and human health. To understand the heavy metal pollution of agriculture soil and rice in the high geological background areas, a total of 200 paddy soil and rice samples were collected in southeast Chongqing. The concentrations of arsenic （As）, cadmium （Cd）, chromium （Cr）, copper （Cu）, mercury （Hg）, nickel （Ni）, lead （Pb）, and zinc （Zn） in paddy soil and rice were analyzed.

[Effect of Biochar on Available Heavy Metals During Sewage Sludge Composting and Land Application of Compost].

The effects of biochar addition to compost on change characteristics and passivation effect of heavy metals (Cd, Pb, Cu, Zn, Ni) were investigated during the process of sludge composting with two different composts (group A:with biochar; group B:without biochar) and land application of compost. The results indicated that the total amount of heavy metals (except Ni) did not change significantly during the process of sludge composting and land application of compost. Additionally, biochar addition had little effect on the total amount of heavy metals.

Therapeutic efficacy of polydatin for nonalcoholic fatty liver disease regulating inflammatory response in obese mice.

Polydatin (PD), a natural precursor of resveratrol, has been used to treat several diseases, such as cardiovascular diseases, hepatic diseases and various cancers. In this study, we aimed to investigate the protective effects and underlying mechanisms of PD on non-alcoholic fatty liver disease (NAFLD) using a high fat induced obese mice model. The studied subjects were randomly divided into a lean group, a high fat diet (HFD) group, and a high fat diet with PD (HFD + PD) group.

[Effect of Sewage Sludge Compost Products Application on Total Mercury and Methylmercury in Soil and Plants].

Two different sludge composting products (with and without biochar) were applied in field to study the variations of total mercury (THg) and methylmercury (MeHg) in soil and plants,as well as their migration in the soil-plant system and accumulation ability in plants during the sludge compost land use process.The results indicated that the concentrations THg and MeHg in soil increased after applying sewage sludge compost products,while the THg level was still lower than the secondary standard of national soil environmental quality.Biochar was speculated to probably promote the soil mercury methylation with lower MeHg/THg ratios in different soil treatments.

[Effect of Soil and Dominant Plants on Mercury Speciation in Soil and Water System of Water-Level-Fluctuation Zone in the Three Gorges Area].

Plentiful plants in the water-level-fluctuation-zone (WLFZ) of Three Gorges Reservoir ( TGR) grow vigorously during the non-flooded period, especially the herbaceous ones. Then, the WLFZ is submerged gradually from the end of September. Soil-plant system that under a long time flooded condition may change the form of mercury, thus resulting in a secondary pollution of the water environment in TGR.

[Spatial distribution of mercury in soils of a typical small agricultural watershed in the Three Gorges Reservoir region].

To understand the mercury (Hg) pollution level and the corresponding ecological risk in agricultural watershed of the Three Gorges Reservoir region, a typical watershed, Wangjiagou, located in Fuling, where is in interior zones of the Three Gorges Reservoir region, was selected as the study object. Meanwhile, ArcGIS geo-statistics module was conducted for investigation of the Hg contents and distribution characteristics in soils of different land use types including dry land, farmland, woodland and settlements. Also the corresponding Hg pollution level and ecological risk were assessed.

[Clinical investigation on schistosomiasis after a 16-year-interruption program regarding its transmission, in Jiaxing region of Zhejiang province].

Objective: To investigate the epidemic pattern, diagnosis and treatment of schistosomiasis after the 16-years intervention program on its transmission in Jiaxing region of Zhejiang province.

Methods: Clinical data of schistosomiasis patients during the last 10 years and pathological specimens with deposited schistosomal eggs during the last 8 years were retrospectively analyzed.

Results: The total numbers of schistosomiasis patients admitted to hospital increased from 194 in 2001 to 960 in 2010, and from 78 to 266 with complications.