Da Qing Chen

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Biocompatible chitosan-coated ZnS quantum dots [CS-ZnS QDs] and chitosan-coated ZnS:Mn2+ quantum dots [CS-ZnS:Mn2+ QDs] were successfully fabricated via a convenient one-step γ-radiation route. The as-obtained QDs were around 5 nm in diameter with excellent water-solubility. These QDs emitting strong visible blue or orange light under UV excitation were(More)
Elongate loach (Leptobotia elongate) is a threatened fish species endemic to the Yangtze River in China. A first set of 22 polymorphism microsatellite loci isolated from this species was characterized. The number of alleles, observed and expected heterozygosity ranged from 2 to 12, from 0.2667 to 1.000 and from 0.2391 to 0.9011, respectively. Seven loci(More)
Metal-graphene nanocomposite is a kind of potential radiation tolerant material. Graphene damage of the composite is inevitable within radiation environments. In this paper, two kinds of copper-graphene nanocomposite (CGNC) systems containing perfect graphene and prefabricated damage graphene, respectively, were adopted to expound the influences of graphene(More)
Leptobotia rubrilaris is a threatened fish species of the Yangtze River in China. A first set of sixteen polymorphism microsatellite loci isolated from this species was characterized. The number of alleles, observed and expected heterozygosity ranged from 2 to 8, 0.1667 to 1.000 and 0.1587 to 0.8342, respectively. Two loci significantly deviated from(More)
Rhinogobio cylindricus is an endemic freshwater fish species with relevant commercial importance in the Yangtze River, China. Nineteen polymorphic microsatellite loci were developed by fast isolation by AFLP of sequences containing repeats (FIASCO) protocol. The number of alleles, observed and expected heterozygosity ranged from 2 to 6, from 0.3333 to 1.000(More)
Hot-pressed silicon carbide, containing aluminum, boron, and carbon additives (ABC-SiC), was subjected to three-body and two-body wear testing using diamond abrasives over a range of sizes. In general, the wear resistance of ABC-SiC, with suitable heat treatment, was superior to that of commercial SiC. When the fine-scale (3 ␮m) diamond abrasives were used,(More)
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