Trace Distance of Remote State Preparation Through Noisy Channels

In this paper, we study remote state preparation (RSP) by w state through noisy channels. The trace distance is used to describe how close the original state is to the output state. Studies show the trace distance is a function of decohenrence rates and angles of the state to be prepared. At the same time, we investigate the influence of different types of noises on the trace distance and find the various types of noises have different degrees of influence on the trace distance for a definite qubit. We also study changes of the trace distance against polar and azimuthal angles.     

Evolution of Dark Spatial Soliton in Quasi-phase-matched Quadratic Media

We theoretically investigate the evolvement of dark spatial soliton with cascading quadratic nonlinearity in quasi-phase-matched second harmonic generation. It is shown that the dark solitary wave can propagate stably when background intensity is large enough, in which diffraction of beam can be balanced by the cascading quadratic nonlinearity. We also analyze the influence of phase-mismatch on the stability of dark soliton propagation.     

阿普唑仑的波谱学数据和结构确证

阿普唑仑是一种临床上广泛应用的具有抗抑郁作用的药物. 本文对阿普唑仑进行了¹H、¹³C NMR检测,通过DEPT和¹H-¹H COSY、¹³C-¹H HSQC、¹³C-¹H HMBC等2D NMR技术对该化合物的¹H、¹³C NMR谱的信号进行了全归属,通过量子化学计算和NMR数据证实了化合物中亚甲基上2个氢的磁不等价性. 讨论了红外吸收光谱的特征峰,并对阿普唑仑的TOF MS的裂解途径进行了分析.      

First-Principle Calculations for Elastic and Thermodynamic Properties of Diamond

The elastic constants and thermodynamic properties of diamond are investigated by using the CRYSTAL03 program. The lattice parameters, the bulk modulus, the heat capacity, the Grüneisen parameter, and the Debye temperature are obtained. The results are in good agreement with the available experimental and theoretical data. Moreover, the relationship between V/V₀ and pressure, the elastic constants underhigh pressure are successfully obtained. Especially, the elastic constants of diamond under high pressure are firstly obtained theoretically. At the same time, the variations of the thermal expansion α with pressure P and temperature T are obtained systematically in the ranges of 0-870 GPa and 0-1600 K.     

BPR氧化减色法测定过氧化氢亨利常数

利用冷阱收集气-液平衡管出来的气相过氧化氢,以及氯化血红素(Hemin)催化下溴邻苯三酚红(bromopyrogallolred,BPR)被过氧化氢氧化减色的分光光度法检测,测定了温度依赖的过氧化氢亨利常数。在10~35℃的范围内,过氧化氢亨利常数KH(mol·L-1·atm-1)表达为lnKH=a/T-b,其中a=7269±22,b=13·26±0·08,T为温度(K)。过氧化氢溶解焓ΔH为60·43±0·18kJ·K-1·mol-1。     

Preface

<正>Professor Andrew J. Majda is one of the most influential mathematicians of our time. Hiscontributions to theoretical partial differential equations and many applied areas are seminaland fundamental. In the course of his phenomenal scientific career, Professor Majda has writtenmore than 300 papers and 7 books, which have been cited more than 10000 times.He was recognized early on for his remarkable and fundamental contributions to applied     

Nucleon internal structure: a new set of quark, gluon momentum, angular momentum operators and parton distribution functions

It is unavoidable to deal with the quark and gluon momentum and angular momentum contributions to the nucleon momentum and spin in the study of nucleon internal structure. However we never have the quark and gluon momentum, orbital angular momentum and gluon spin operators which satisfy both the gauge invariance and the canonical momentum and angular momentum commutation relation. The conflicts between the gauge invariance and canonical quantization requirement of these operators are discussed. A new set of quark and gluon momentum, orbital angular momentum and spin operators, which satisfy both the gauge invariance and canonical momentum and angular momentum commutation relation, are proposed. The key point to achieve such a proper decomposition is to separate the gauge field into the pure gauge and the gauge covariant parts. The same conflicts also exist in QED and quantum mechanics and have been solved in the same manner. The impacts of this new decomposition to the nucleon internal structure are discussed.     

Study of q and η' physics at BES-Ⅲ

Decays of both η and η' provide very useful information in our understanding of low-energy QCD,and experimental signatures for these decays would be extremely helpful at BES-Ⅲ.The rare decays of the η and η' mesons could serve as a low-energy test of the Standard Model and its beyond.The sensitivities of the measurements of η and η' decays are discussed at BES-Ⅲ,in which the η and η' mesons are produced in the ψ decays.     

Relativistic Mean Field Study of the Z=117 Isotopic Chain

The properties of the Z = 117 isotopic chain are studied within the framework of the axially deformed relativistic mean field theory （RMFT） in the blocked BCS approximation. The ground-state properties, such as hinging energies, deformations as well as the possible α decay energies and lifetimes are calculated with the parameter set of NL-Z2 and compared with results from the finite range droplet model. The analysis by RMFT shows that the isotopes in the range of mass number A =291 ~ 300 exhibit higher stability, which suggests that they may be promising nuclei to be hopefully synthesized in the lab among the nuclei Z = 117.     

S3亚椭圆算子的谱

本文研究了与紧流形S3上的与Hopf纤维丛相联系的亚椭圆算子的 谱.利用球调和函数的直和分解,得到了亚椭圆算子的谱和每个特征值所对应的特征空间及其维数.