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Yancheng, China

You Y.,Yancheng Teachers College
Modern Physics Letters B | Year: 2010

In the transfer matrix framework of electromagnetic transport, we calculate the group velocities in a one-dimensional photonic crystal composed of a biaxially anisotropic chiral material and dielectric material. According to the isofrequency curves, it is unravelled that two polarized waves possess negative group velocities. As a result, negative refraction can be achieved in the present configuration. In addition, the chirality has a significant influence on the group velocities in the biaxially anisotropic chiral photonic crystal, which even causes the group velocities to change from positive to negative. Our investigations may have potential applications in the chiral-based negative refraction devices. © 2010 World Scientific Publishing Company. Source

Jiao C.-M.,Yancheng Teachers College
Acta Crystallographica Section E: Structure Reports Online | Year: 2010

The title compound, [Cd(C14H8O6S)(H 2O)2]n, comprises zigzag chains parallel to [111] of alternating [Cd(H2O)2]2+ and sulfonyl-dibenzoate units, with the Cd and S atoms lying on crystallographic twofold axes. The central CdII ion is in a slightly distorted octa-hedral geometry, coordinated by six O atoms from two carboxyl-ate groups and two water O atoms. An intra-molecular C - H⋯O hydrogen bond occurs. In the crystal, inter-molecular hydrogen bonds between carboxyl-ate O atoms and coordinated water mol-ecules in adjacent chains lead to the formation of a three-dimensional network structure. The compound is isotypic with the Zn analog. Source

Kuai J.,Yancheng Teachers College | Da H.X.,National University of Singapore
Journal of Magnetism and Magnetic Materials | Year: 2014

We use scattering matrix method to theoretically demonstrate that the quantum Goos-Hänchen shift of the surface on three-dimensional topological insulator coated by ferromagnetic strips is sensitive to the magnitude of ferromagnetic magnetization. The dependence of quantum Goos-Hänchen shift on magnetization and gate bias is investigated by performing station phase approach. It is found that quantum Goos-Hänchen shift is positive and large under the magnetic barrier but may be positive as well as negative values under the gate bias. Furthermore, the position of quantum Goos-Hänchen peak can also be modulated by the combination of gate bias and proximity magnetic effects. Our results indicate that topological insulators are another candidates to support quantum Goos-Hänchen shift. © 2013 Elsevier B.V. Source

Xu X.,Yancheng Teachers College | Xiao J.,Nanjing University of Science and Technology | Huang H.,China Academy of Engineering Physics | Li J.,China Academy of Engineering Physics | Xiao H.,Nanjing University of Science and Technology
Journal of Hazardous Materials | Year: 2010

Molecular dynamical (MD) simulations with the COMPASS force field were employed to investigate the influences of temperature (T), the concentration of F2314 binder (W%), and crystal defects on the mechanical properties, binding energy (Ebind), and detonation properties of ε-CL-20(0 0 1)/F2314 PBX (polymer bonded explosives). T was found to have some influences on the mechanical properties, and the PBX at 298 K was considered with better mechanical properties. By radial distribution function g(r) analysis the three types of hydrogen bonds, H⋯O, H⋯F, and H⋯Cl were predicted as the main interaction formats between F2314 and ε-CL-20, and the strength of these interactions changed with temperature changing. The isotropic properties of the PBX increased with W% increasing, but each modulus and Ebind did not monotonously vary with W% increasing. The detonation properties of the PBX decreased with the increasing W%, and the PBX with 4.69% F2314 was regarded with good detonation properties. The existence of crystal defects (vacancy or adulteration) might increase the elasticity but destabilize the system to some extent, and the mechanical properties of PBX were chiefly determined by the main body explosive. The above information was thought guidable for practical formulation design of PBX. © 2009 Elsevier B.V. All rights reserved. Source

Wang J.,Nanjing Normal University | Wang J.,Yancheng Teachers College | Yang G.,Nanjing Normal University
Mitochondrial DNA | Year: 2011

To better understand the phylogenetic status of the snakehead, Channa argus, we determined its complete mitogenome sequence using long-polymerase chain reaction and the direct sequencing method. The complete mitogenome sequence was 16,559 bp in length and contained 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes, and 1 control region (D-loop), the gene composition/order of which was identical to that observed in most other vertebrates. This was the first report of the mitogenome sequence in suborder Channoidei. Phylogenetic relationships of 14 perciform suborders based on mitogenome sequences were reconstructed using Bayesian inference and maximum likelihood methods. The results strongly supported the monophyly of Perciformes and the snakehead, as a representative species of suborder Channoidei, formed the most basal branch having sister relationship with the clade containing all other analyzed perciform fishes. The further phylogenetic analyses of six channid species, based on cytochrome b gene, suggested that two channid genera constituted reciprocally monophyletic clades. In addition, the relaxed molecular clock method was used to estimate divergence dates among major suborders of Perciformes and major species in Channoidei. © 2011 Informa UK, Ltd. Source

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