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Search Results: 1 - 10 of 39132 matches for " Shuang Zhao "
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Event-by-event Simulation of Quantum Cryptography Protocols
Shuang Zhao,Hans De Raedt
Physics , 2007,
Abstract: We present a new approach to simulate quantum cryptography protocols using event-based processes. The method is validated by simulating the BB84 protocol and the Ekert protocol, both without and with the presence of an eavesdropper.
GC-MS analysis of essential oil of Paeonia suffruticosa Andrews from ZhaoFen and RouFurong flowers in China  [PDF]
Weiping Yin, Wenlu Duan, Pu Liu, Ruixue Deng, Yunlai Ren, Shuang Zhao
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.48073
Abstract: The flowers of ZhaoFen and RouFurong may contain essential oils with natural aromatic ingredients. In the present work, the chemical compositions of essential oil of Paeonia suffruticosa Andrews from the flowers of ZhaoFen and RouFurong grown only in China were investigated by GC-MS analysis. The results indicate that there are 27 constituents in ZhaoFen and 29 constituents in RouFurong, which account for 96.04% and 95.90% of the oils of ZhaoFen and RouFurong, respectively. The major components of the essential oils are character-rized by oxygenated terpenols, and their content is, respectively, 85.06% and 83.47%. The essential oil of Paeonia suffruticosa Andrews was reported for the first time on the aerial parts.
Mechanisms of microRNA-mediated gene regulation
Shuang Zhao,Mo-Fang Liu
Science China Life Sciences , 2009, DOI: 10.1007/s11427-009-0152-y
Abstract: microRNAs (miRNAs) are identified as a class of non-protein regulators and a new source for broad control of gene expression in eukaryotes. The past years have witnessed substantial progress in understanding miRNA functions and mechanisms, although a few controversies remain. Various hypotheses and models have been suggested for the mechanisms of miRNA repression, including translational inhibition at the level of initiation or elongation, rapid degradation of the nascent peptide, mRNA degradation, and mRNA sequestration into P bodies (processing bodies) and SGs (stress granules) for degradation or/and storage. Recently, some noncanonical miRNA regulation, such as miRNA activation and de-repression of miRNA inhibition, have been uncovered. This review discusses some recent advances about how miRNAs regulate their targets and various modes of miRNA function.
Mechanisms of microRNA-mediated gene regulation

ZHAO Shuang&,LIU Mo-Fang,

中国科学C辑(英文版) , 2009,
Abstract: microRNAs (miRNAs) are identified as a class of non-protein regulators and a new source for broad control of gene expression in eukaryotes. The past years have witnessed substantial progress in understanding miRNA functions and mechanisms, although a few controversies remain. Various hypotheses and models have been suggested for the mechanisms of miRNA repression, including translational inhibition at the level of initiation or elongation, rapid degradation of the nascent peptide, mRNA degradation, and mRNA sequestration into P bodies (processing bodies) and SGs (stress granules) for degradation or/and storage. Recently, some noncanonical miRNA regulation, such as miRNA activation and de-repression of miRNA inhibition, have been uncovered. This review discusses some recent advances about how miRNAs regulate their targets and various modes of miRNA function.
Lepton flavor violating signals of a little Higgs model at the high energy linear $e^{+}e^{-}$ colliders
Yue, Chong-Xing;Zhao, Shuang
High Energy Physics - Phenomenology , 2007, DOI: 10.1140/epjc/s10052-007-0234-6
Abstract: Littlest Higgs $(LH)$ model predicts the existence of the doubly charged scalars $\Phi^{\pm\pm}$, which generally have large flavor changing couplings to leptons. We calculate the contributions of $\Phi^{\pm\pm}$ to the lepton flavor violating $(LFV)$ processes $l_{i}\to l_{j}\gamma$ and $l_{i}\to l_{j}l_{k}l_{k}$, and compare our numerical results with the current experimental upper limits on these processes. We find that some of these processes can give severe constraints on the coupling constant $Y_{ij}$ and the mass parameter $M_{\Phi}$. Taking into account the constraints on these free parameters, we further discuss the possible lepton flavor violating signals of $\Phi^{\pm\pm}$ at the high energy linear $e^{+}e^{-}$ collider $(ILC)$ experiments. Our numerical results show that the possible signals of $\Phi^{\pm\pm}$ might be detected via the subprocesses $e^{\pm}e^{\pm}\to l^{\pm}l^{\pm}$ in the future $ILC$ experiments.
2,2-Dichloro-1-(2-phenyl-1,3-oxazolidin-3-yl)ethanone
Fei Ye,Ying Fu,Shuang Zhao
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810002461
Abstract: In the title molecule, C11H11Cl2NO2, the oxazolidine ring is in an envelope conformation with the O atom forming the flap; the other four essentially planar ring atoms (r.m.s. deviation = 0.012 ) form a dihedral angle of 91.1 (3)° with the phenyl ring. In the crystal structure, molecules are linked by weak intermolecular C—H...O hydrogen bonds, forming one-dimensional chains.
Model for Transversely Isotropic Materials Based on Distinct Lattice Spring Model (DLSM)
Shuang You,GaoFeng Zhao,HongGuang Ji
Journal of Computers , 2011, DOI: 10.4304/jcp.6.6.1139-1144
Abstract: A two-phase DLSM model is proposed to model transverse isotropic materials, in which the layer structure of the anisotropic materials is explicitly represented. Equations are derived to obtain elastic parameters of the two phase model from the elastic modules in parallel to the bedding planes and that in normal direction of the bedding planes. Then, the mechanical properties of the two-phase DLSM model are studied and compared with experimental observations. Results indicate that the mechanical properties of transverse isotropic materials can be well represented by the proposed model. Following this, the model is applied to study the influence of the weakness layers (bedding planes) on the anisotropic deformation and Damaged Zone (DZ) evolution of underground disposal galleries in transverse isotropic medium. Finally, some conclusions are presented.
Rhantus fengi sp. n. from Xizang, China, and notes on Laccoporus nigritulus (Gschwendtner) (Coleoptera, Dytiscidae)
Shuang Zhao,Fenglong Jia,Michael Balke
ZooKeys , 2011, DOI: 10.3897/zookeys.94.1161
Abstract: Rhantus fengi sp. n. from Mount Sejila, Xizang, China is described and illustrated. Laccoporus nigritulus (Gschwendtner, 1936) is redescribed and illustrated; Laccoporus viator Balfour-Browne, 1939, syn. n. is established as its junior subjective synonym.
Event-by-event simulation of Einstein-Podolsky-Rosen-Bohm experiments
Shuang Zhao,Hans De Raedt,Kristel Michielsen
Physics , 2007, DOI: 10.1007/s10701-008-9205-5
Abstract: We construct an event-based computer simulation model of the Einstein-Podolsky-Rosen-Bohm experiments with photons. The algorithm is a one-to-one copy of the data gathering and analysis procedures used in real laboratory experiments. We consider two types of experiments, those with a source emitting photons with opposite but otherwise unpredictable polarization and those with a source emitting photons with fixed polarization. In the simulation, the choice of the direction of polarization measurement for each detection event is arbitrary. We use three different procedures to identify pairs of photons and compute the frequency of coincidences by analyzing experimental data and simulation data. The model strictly satisfies Einstein's criteria of local causality, does not rely on any concept of quantum theory and reproduces the results of quantum theory for both types of experiments. We give a rigorous proof that the probabilistic description of the simulation model yields the quantum theoretical expressions for the single- and two-particle expectation values.
General Logarithmic Corrections to Bekenstein-Hawking Entropy
Zhao Ren,Zhao Hai-Xia,Hu Shuang-Qi
Physics , 2006, DOI: 10.1142/S021773230702230X
Abstract: Recently, there has been a lot of attention devoted to resolving the quantum corrections to the Bekenstein-Hawking entropy of the black hole. In particular, the coefficient of the logarithmic term in the black hole entropy correction has been of great interest. In this paper, the black hole is corresponded to a canonical ensemble in statistics by radiant spectrum, resulted from the black hole tunneling effect studies and the partition function of ensemble is derived. Then the entropy of the black hole is calculated. When the first order approximation is taken into account, the logarithmic term of entropy correction is consistent with the result of the generalized uncertainty principle. In our calculation, there are no uncertainty factors. The prefactor of the logarithmic correction and the one if fluctuation is considered are the same. Our result shows that if the thermal capacity is negative, there is no divergent term. We provide a general method for further discussion on quantum correction to Bekenstein-Hawking entropy. We also offer a theoretical basis for comparing string theory and loop quantum gravitaty and deciding which one is more reliable.
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