Generation of four-photon W state via cavity QED

This paper proposes an alternative scheme for generating four-photon W state via cavity QED. The scheme bases on the resonant interaction of a A-type three level atom with two bimodal cavities. The detection of atom collapses the cavity to the desired state. Comparing with previous schemes, the advantage of this scheme is that the interaction time can be greatly shortened since it uses the resonant interaction between atom and cavities. Moreover, the proposed scheme is more experimentally feasible than the previous ones.     

Bound entangled states invariant under Ux

This paper obtains an entangled condition for isotropic-like states by using an atomic map. It constructs a class of bound entangled states from the entangled condition and shows that the partial transposition of the state from the constructed bound entangled class is an edge bound entangled state by using range criterion.     

Two-vibron bound states in the β--Fermi--Pasta--Ulam model

This paper studies the two-vibron bound states in the β- Fermi Pasta-Ulam model by means of the number conserving approximation combined with the number state method. The results indicate that on-site, adjacent-site and mixed two-vibron bound states may exist in the model. Specially, wave number has a significant effect on such bound states, which may be considered as the quantum effects of the localized states in quantum systems.     

HI-13串列加速器辐射防护联锁系统改造

新建HI-13串列加速器辐射防护联锁系统采用PLC自动化控制,增加与优化了原系统的联锁控制逻辑,在充分保证人员辐射安全的同时,使系统状态显示更直观,操作更方便.     

MnOx在ZrO2上分散状态及对CO氧化的影响

Mn-O/ZrO2 catalysts were prepared by impregnation method and were characterized by XRD, TPR and TPD-MS. The oxidation activity of CO on these catalysts was also studied. The results indicated that the interaction between MnOx and ZrO2 would restrained the phase transformation of ZrO2, and raised the dispersion of MnOx species on ZrO2. The highly-dispersed MnOx on ZrO2 is predominant contributors in catalytic activity of the Mn-O/ZrO2 catalysts.     

用电子探针对广西金牙微细粒金矿金赋存状态的研究

微细粒金赋存状态的研究，对搞清此类金矿的成因，指导这类金矿的勘探、开采和选冶有着重要意义，本文报道了用电子探针对广西金牙微细粒金矿的矿石进行了观察分析，首次在金牙金矿床含金矿化物表面发现了含铂汞金矿、汞金矿、铂金太航自然金，并确定出它们的尺度。     

成形过程数值模拟的非增量时—空算法

本文针对计及几何，材料，接触摩擦等耦合作用的高度非线性的加工成形过程数值模拟和计算分析工作，建议了非增量时－空求解算法。     

Generalized reduced-order synchronization of chaotic system based on fast slide mode

A new kind of generalized reduced-order synchronization of different chaotic systems is proposed in this paper. It is shown that dynamical evolution of third-order oscillator can be synchronized with the canonical projection of a fourth-order chaotic system generated through nonsingular states transformation from a cell neural net chaotic system. In this sense, it is said that generalized synchronization is achieved in reduced-order. The synchronization discussed here expands the scope of reduced-order synchronization studied in relevant literatures. In this way, we can achieve generalized reduced-order synchronization between many famous chaotic systems such as the second-order D\"{u}ffing system and the third-order Lorenz system by designing a fast slide mode controller. Simulation results are provided to verify the operation of the designed synchronization.     

THE SPACE—FRACTIONAL TELEGRAPH EQUATION AND THE RELATED FRACTIONAL TELEGRAPH PROCESS

The space-fractional telegraph equation is analyzed and the Fourier transform of its fundamental solution is obtained and discussed.A symmetric process with discontinuous trajectories, whose transition function satisfies the space-fractional telegraph equation, is presented. Its limiting behaviour and the connection with symmetric stable processes is also examined.     

θ(t)型奇异积分算子的几个有界结果

讨论了θ（ｔ）型奇异积分算子在Ｂａｎａｃｈ值ＬＢ＾ｐ（Ｒ＾ｎ）,（１≤ｐ〈＋∞）空间上的有界性,以及在Ｂａｎａｃｈ值Ｈａｒｂｙ空间Ｈ＾１Ｂ（Ｒ＾ｎ）上的有界性。