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The autosomal short tandem repeat (STR) plays a unique role in population comparisons, phylogenetic reconstruction and migration history tracing. This study investigated the frequencies of 17 autosomal STR loci in the Han population from Wuxi, Eastern China, with the aim of expanding the available population information in human genetic databases and for forensic DNA analysis. The genetic polymorphisms of 17 STR loci were analysed in 5358 individuals of the Han population from Wuxi, Eastern China. Population comparisons including genetic distances, the neighbour-joining tree and multidimensional scaling plot were carried out between the Wuxi Han population and different ethnic groups. A total of 777 alleles at 17 autosomal STR loci were observed, with the corresponding allelic frequencies ranging from 0.0001–0.5210. The combined power of discrimination and exclusion for the 17 autosomal STR loci were 0.0000 and 0.000, respectively. Moreover, the phylogenetic analysis was performed between the Wuxi Han population and other relevant populations. The neighbour-joining tree and multidimensional scaling plot were generated based on Nei's standard genetic distance. Population comparisons indicated that the Wuxi Han population had the closest genetic relationship with the Hubei Han population, relative to the other populations, which mirrors the historical and geographical background of the populations compared. [ABSTRACT FROM AUTHOR]

To evaluate the impact of DCAcAm on zebrafish gill, we measure the responses of antioxidant enzyme (superoxide dismutase, SOD), lipid peroxidation (malondialdehyde, MDA), ATPase (Na+/K+‐ATPase and Ca2+/Mg2+‐ATP) and histopathological changes of gill in adult zebrafish, after exposed to different concentrations of DCAcAm (0, 1, 10, 100, and 1000 μg L−1) for 30 days. Results indicated that DCAcAm first increased and then decreased SOD activity, and DCAcAm also lowered the activities of Na+/K+‐ATPase and Ca2+/Mg2+‐ATPase. These results indicated that high affinity of DCAcAm probably be a main factor, which can damage the structures of enzymes, thereby inhibiting the SOD and ATPase activities. Besides, histopathological investigation results also manifested that chronic exposure to DCAcAm can damage the gill tissues, disrupting the normal function of gills. We conclude that chronic exposure to DCAcAm was harmful to organisms, not only influence gill function, but also further cause damage on the gill tissues. [ABSTRACT FROM AUTHOR]

A series of carborane-containing solvent-free liquid silicone resins were synthesized by a hydrosilylation reaction with silicone resins containing different vinyl contents and 1,7-bis (3-hydridotertramethyldisiloxanyl)-m-carborane (HCB). The structure and thermal properties of the silicone resins were characterized by nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), as well as dynamic mechanical analysis (DMA), respectively. The cured silicone resins containing carborane showed better thermal stability and thermal oxidative stability than its carborane-free counterpart. DMA showed that cured silicone resins had high tan δ value thus providing good prospects for damping material applications. Furthermore, adhesive properties of silicone resin adhered to stainless steel at various conditions were evaluated by lap shear strength (LSS) test. It was found that the LSS of adhesive containing carborane was higher than that of carborane-free adhesive at per testing temperature. The results also showed that the bonding strength of adhesive increased with increasing carborane content. [ABSTRACT FROM PUBLISHER]