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Zhanjiang, China

Zhanjiang Normal University is an institution of higher learning in the Chikan District of Zhanjiang City, Guangdong Province, China.The history of the university dates back to the "Leiyang Academy" founded in 1636. In 1904, it started its education training program. In 1978, it became Leizhou Normal College, and was elevated to Zhanjiang Normal University in 1991. Wikipedia.


Luo M.,Zhanjiang Normal University
Bulletin of the Korean Chemical Society | Year: 2014

Red fluorescent organic nanopaticles (FONs) based on a diarylacrylonitrile derivative conjugated molecule were facilely prepared by surfactant modification. Such red FONs showed excellent water solubility and biocompatibility, making them promising for cell imaging applications.


Lin B.,Zhanjiang Normal University
Computer Physics Communications | Year: 2013

In this work, we present a numerical method based on parametric cubic splines for solving the cubic nonlinear Schrödinger equation. The truncation error is given and it has been shown that by choosing suitable parameters we can obtain various accuracy schemes. Stability analysis of the method based on the von Neumann technique has been carried out and the method is shown to be unconditionally stable. The efficiency of the method is demonstrated by test problems. The lowest two conserved quantities are computed. The numerical simulations validate and demonstrate the advantages of the method. © 2012 Elsevier B.V. All rights reserved.


Mo J.-X.,Beijing Normal University | Mo J.-X.,Zhanjiang Normal University | Liu W.-B.,Beijing Normal University
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2013

In this Letter, the nature of phase transition at the critical point of P-V criticality in the extended phase space of RN-AdS black holes has been investigated. By treating the cosmological constant and its conjugate quantity as thermodynamic pressure and volume respectively, we introduce the original expressions of Ehrenfest equations directly into the black hole research instead of utilizing the analogy of Ehrenfest equations. We carry out an analytical check of Ehrenfest equations and prove that both Ehrenfest equations are satisfied. So the black hole undergoes a second order phase transition at the critical point. This result is consistent with the nature of liquid-gas phase transition at the critical point, hence deepening the understanding of the analogy of charged AdS black holes and liquid-gas systems. © 2013 Elsevier B.V.


Mo J.-X.,Beijing Normal University | Mo J.-X.,Zhanjiang Normal University | Liu W.-B.,Beijing Normal University
European Physical Journal C | Year: 2014

To understand the effect of third order Lovelock gravity, P-V criticality of topological AdS black holes in Lovelock-Born-Infeld gravity is investigated. The thermodynamics is further explored with some more extensions and in some more detail than the previous literature. A detailed analysis of the limit case β → ∞ is performed for the seven-dimensional black holes. It is shown that, for the spherical topology, P-V criticality exists for both the uncharged and the charged cases. Our results demonstrate again that the charge is not the indispensable condition of P-V criticality. It may be attributed to the effect of higher derivative terms of the curvature because similar phenomenon was also found for Gauss-Bonnet black holes. For k=0, there would be no P-V criticality. Interesting findings occur in the case k=-1, in which positive solutions of critical points are found for both the uncharged and the charged cases. However, the P-v diagram is quite strange. To check whether these findings are physical, we give the analysis on the non-negative definiteness condition of the entropy. It is shown that, for any nontrivial value of α, the entropy is always positive for any specific volume v. Since no P-V criticality exists for k=-1 in Einstein gravity and Gauss-Bonnet gravity, we can relate our findings with the peculiar property of third order Lovelock gravity. The entropy in third order Lovelock gravity consists of extra terms which are absent in the Gauss-Bonnet black holes, which makes the critical points satisfy the constraint of non-negative definiteness condition of the entropy. We also check the Gibbs free energy graph and "swallow tail" behavior can be observed. Moreover, the effect of nonlinear electrodynamics is also included in our research. © 2014 The Author(s).


Li G.-Q.,Zhanjiang Normal University
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2014

In this Letter, we investigate the effects of dark energy on P-V criticality of charged AdS black holes by considering the case of the RN-AdS black holes surrounded by quintessence. By treating the cosmological constant as thermodynamic pressure, we study its thermodynamics in the extended phase space. It is shown that quintessence dark energy does not affect the existence of small/large black hole phase transition. For the case ωq = - 2/3 we derive analytic expressions of critical physical quantities, while for cases ωq ≠ - 2/3 we appeal to numerical method for help. It is shown that quintessence dark energy affects the critical physical quantities near the critical point. Critical exponents are also calculated. They are exactly the same as those obtained before for arbitrary other AdS black holes, which implies that quintessence dark energy does not change the critical exponents. © 2014 Elsevier B.V.

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