Sanya, China

Qiongzhou University

www.qzu.edu.cn
Sanya, China

Qiongzhou University is a university located in Sanya city , in Hainan, China.Quongzhou University is in the process of moving from its old location in the center of the island to its current location in Sanya, which is at the most southern part of the island of Hainan. The University is also in the process of a name change, in the near future it will be changed to Sanya University.The school is located in one of the most beautiful parts of the world, it is by far the most tropical part of China and receives visitors from around the world, especially Russians who enjoy the warm tropical weather in the middle of the coldest time of the year. Sanya has endless white sand beaches, which seem to go on forever. These beaches are in the downtown area with numerous restaurants and shopping areas within walking distance. Unfortunately these beaches are usually overly crowded with tourist and locals, but if one were to leave the city center one would find endless deserted virgin beaches.Quongzhou University has about 10,000 students from all over China. Most of them are interested in learning something connected to the tourist industry, so English is a must. The school is located just outside of town to the west of Sanya. All the buildings are modern and recently constructed; resounded by tropical rolling green hills. Quongzhou University places great importance to the liberal arts, which are usually neglected by most Chinese universities. . Wikipedia.

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Liu J.-J.,Qiongzhou University
Monthly Notices of the Royal Astronomical Society | Year: 2013

According to the shell-model Monte Carlo method, based on the random-phase approximation and linear response theory, we carried out an estimation of electron capture (EC) of the strongly screening nuclides 56Fe, 56Co, 56Ni, 56Mn,56Cr and 56V during strong electron screening (SES) in pre-supernovae. The EC rates are decreased greatly and may even exceed 21.5 per cent in the case of SES. We also compare our results with those calculated by the method of Aufderheide in the case of SES. Our results agree reasonably well with those of Aufderheide in higher density and temperature surroundings (e.g. ρ7 > 60, T9 = 15.40) and the maximum error is ~0.5 per cent. However, the maximum error is ~13.0 per cent in lower density surroundings (e.g. 56Cr at ρ7 = 10, T9 = 15.40, Ye = 0.41).We also compared our results for SES with those of Fuller, Fowler & Newman and Nabi, which apply to a case without SES. The comparisons show that our results are lower than those of Fuller, Fowler & Newman by more than one order of magnitude and about 7.23 per cent lower than those of Nabi. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.


Hao L.-H.,Qiongzhou University | Kang X.-P.,Qiongzhou University
European Physical Journal D | Year: 2014

The multi-configuration Dirac-Hartree-Fock method is employed to calculate the fine-structure energy levels, wavelengths, transition probabilities, and oscillator strengths for electric dipole allowed (E1) and forbidden (M1, E2, M2) lines for the 4s 24p and 4s4p 2 configurations of W XLIV. The valence-valence and core-valence correlation effects are accounted for in a systematic way. Breit interactions and quantum electrodynamics (QED) effects are estimated in subsequent relativistic configuration interaction (CI) calculations. The present results are in good agreement with other available theoretical and experimental values, and we predict new data for several levels where no other theoretical and/or experimental results are available, precise measurements are clearly needed here. © 2014 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.


Liu J.-J.,Qiongzhou University
Monthly Notices of the Royal Astronomical Society | Year: 2014

Using the theory of relativity in superstrong magnetic fields (SMFs) and a nuclear shell model, we carry out an estimation of electron capture (EC) rates on iron-group nuclei in SMFs. The rates of change of electronic abundance (RCEA) due to EC are also investigated in SMFs. It is concluded that the EC rates of most iron-group nuclides are increased greatly by SMFs, by an amount sometimes even exceeding nine orders of magnitude. On the other hand, RCEA is influenced greatly by SMFs and reduced by more than eight orders of magnitude in the EC reaction. We also compare our results with those of Fuller et al. (FFN) and Aufderheide et al. (AUFD) in cases with and without SMFs. The results show that our results are in good agreement with AUFD's, but FFN's rates are close to one order of magnitude higher than ours in the case without SMFs. In contrast, our calculated rates for most nuclides in SMFs are increased and even exceed FFN's and AUFD's results, which is in the case without SMFs, by as much as nine and eight orders of magnitude, respectively. © 2013 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society.


Liu J.-J.,Qiongzhou University
Chinese Physics C | Year: 2013

Based on the theory of relativity in superstrong magnetic fields (SMFs), we have carried out an estimation on electron capture (EC) rates of nuclides 52,53,54,55,56Fe in the SMFs in magnetars. The rates of change of electronic fraction (RCEF) in the EC process are also discussed. The results show that the EC rates increase greatly and even exceeds by 4 orders of magnitude (e.g. 54Fe, 55Fe and 56Fe) in SMF. On the contrary, the RCEF decreases largely and even exceeds by 5 orders of magnitude in the SMF. © 2013 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.


Lin Y.,Qiongzhou University
Advanced Materials Research | Year: 2012

For meeting the needs of the survey of agriculture environment communication in Hainan Province, an intelligent monitoring system was developed based on ZigBee which consists of four parts: wireless sensor networks, gateway, transmission network, remote monitoring center. A new type network structure which is composed of wireless sensor networks and the transmission network was proposed. This paper is devoted to explanation and illustration for our design of intelligent agricultural monitoring system. The system feasibility and superiority was verified in a simple star topology setup in a botanical garden in QiongZhou University. The sensor nodes can obtain the temperature, humidity and illumination information in real time, and then transferred to the remote monitoring center by the gateway via the transmission network. The test result shows that this intelligent agriculture monitoring system has the useful characteristics of low power consumption, low cost, large network capacity, flexible disposition, and minor influence on the natural environment. It has better actual application value.


Liu J.-J.,Qiongzhou University
Astrophysics and Space Science | Year: 2013

Using Shell-Model Monte Carlo (SMMC) method and Random Phase Approximation (RPA) theory, the electron capture (EC) and the electron capture cross section (ECCS) of nuclei 55Co and 56Ni are investigated. We also discuss the rates of the change of electron fraction (RCEF) and the error factor C, which is compared our results with those of AFUD, which calculated by the method of Aufderheide. The results show that the ECCS and the EC rates for 55Co and 56Ni increased about four orders of magnitude at relative high temperature (such as T9=5,7,9). On the other hand, the RCEF for two nuclides decreased greatly, and even exceed four orders of magnitude. The error factor shows ours is agreed reasonably well with AUFD under the higher density surroundings (e. g. ρ7=106, Ye=0. 43; ρ7=506, Ye=0. 42; ρ7=4010, Ye=0. 41). But under the lower density surroundings (e. g. ρ7=3. 36, Ye=0. 48) the maximum error is ~14. 5 % for 55Co but is ~14. 0 % for 56Ni. The error is ~9. 5 % and ~9. 0 % for 55Co, 56Ni at ρ7=5. 86, Ye=0. 47 respectively. © 2012 Springer Science+Business Media Dordrecht.


Liu J.-J.,Qiongzhou University
Research in Astronomy and Astrophysics | Year: 2013

Using the Shell-Model Monte Carlo method and the Random Phase Approximation theory, we carry out an estimation of neutrino energy loss (NEL) for 55Co and 56Ni by electron capture. We find that the NEL rates increase greatly at some typical stellar conditions, and can even exceed five orders of magnitude (e.g. T9 = 38.5, Ye = 0.42 for 56Ni). On the other hand, the error factor C shows that the fit is fairly good for two results at higher density and lower temperature, and the maximum error is ∼ 1.2%. However, the maximum error is ∼ 55.60% (e.g. T9 = 18.5, Ye = 0.45) at lower density and higher temperature. © 2013 National Astronomical Observatories of Chinese Academy of Sciences and IOP Publishing Ltd.


Liu J.-J.,Qiongzhou University
Astrophysics and Space Science | Year: 2013

Based on the theory of relativity, the assumption of a superstrong magnetic field (SMF), and the shell model, the neutrino energy loss (NEL) rates of nuclides 56Fe, 56Co, 56Ni, 56Mn, 56Cr, and 56V by electron capture are investigated in the range of magnetic fields from 1013 G to 1018 G in magnetars. We also discuss the rates of change of the electron fraction (RCEF) in SMF and compare our results in SMF with those of FFN and Nabi, which is for the case without SMF. The results show that the NEL rates are increased greatly and even exceed by eight orders of magnitude in SMF. The RCEF are decreased largely and even exceed by seven orders of magnitude in SMF. On the other hand, our calculated NEL rates with SMF are larger by seven orders of magnitude than FFN's at B=1018 G, and even by eight orders of magnitude compared to Nabi's. © 2012 Springer Science+Business Media Dordrecht.


Liu J.-J.,Qiongzhou University
Chinese Physics C | Year: 2010

Based on Weinberg-Salam theory the bremsstrahlung neutrino energy loss for nuclei 24Mg, 28Si, 32S, 40Ca and 56Fe are investigated in strong electron screening. Our results are compared with those of Dicus' and show that the latter are higher by 2 orders of magnitude in the density-temperature region of 108 g/cm3 ≤ ρ/μe ≤ 1011 g/cm3 and 2.5 ≤ T9 ≤ 4.5. On the other hand, the factor C shows that the maximum differences are 99.16%, 99.13%, 99.12%, 99.055%, 99.040% corresponding to the nuclei 24Mg, 28Si, 32S, 40Ca and 56Fe. © 2010 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.


Liu J.-J.,Qiongzhou University
Research in Astronomy and Astrophysics | Year: 2013

Following the theory of relativity, in the presence of an ultrastrong magnetic field (UMF) and utilizing a nuclear shell model, we carry out an estimation of the neutrino energy loss (NEL) rates of nuclides 53-60Cr, which occur by electron capture in magnetars. The results show that the NEL rates greatly increase when a UMF is present, and can even exceed nine orders of magnitude at relatively lower density and temperature (e.g. ρ7 = 5.86, Ye = 0.47, T9 = 7.33) in the range from 1013 G to 1018 G. However, the increase in rates was no more than six orders of magnitude at relatively higher density and temperature (e.g. ρ7 = 4.86 × 108, Ye = 0.39, T9 = 14.35). © 2013 National Astronomical Observatories of Chinese Academy of Sciences and IOP Publishing Ltd.

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