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Search Results: 1 - 10 of 66789 matches for " ZHOU Shi-Yao "
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Poly[(μ2-4,4′-bipyridine)bis(μ4-5-tert-butylisophthalato)bis(μ3-5-tert-butylisophthalato)di-μ3-hydroxido-pentazinc(II)]
Dong-Sheng Zhou,Di Sun,Shi-Yao Yang,Rong-Bin Huang
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809031365
Abstract: The asymmetric unit of the title compound, [Zn5(C12H12O4)4(OH)2(C10H8N2)]n, consists of three ZnII ions (one of which is located on a twofold rotation axis), two 5-tert-butylisophthalate ligands, one 4,4′-bipyridine ligand and one hydroxide group. The five ZnII ions form a pentanuclear zinc cluster, which is further bridged by ten organic ligands, forming two-dimensional sheets. The central zinc ion of the cluster has site symmetry 2 and is octahedrally coordinated in a N2O4 donor set, whereas the other four zinc atoms are tetrahedrally coordinated by four O atoms. The coordination modes for the 5-tert-butylisophthalates are bis(bidentate) or bidentate-monodentate. Hydrogen bonds are formed between adjacent sheets through the hydroxide groups and the O atoms of the monodentate carboxylate groups. The two tert-butyl groups are disordered over two positions with ratios of 0.64 (2):0.36 (2) and 0.85 (3):0.15 (3).
DEPENDENCE OF ADHESION OF FILMS OF TELLURIDE UPON ITS MI CROSTRUCTURE
碲化物薄膜的附着牢固度与其显微结构的关系

ZHANG Su-Ying,FAN Bin,CHENG Shi-Ping,LIN Jie-Hu,ZHOU Shi-Yao,WANG Ge-Y,SHI Tian-Shen,
张素英
,程实平

红外与毫米波学报 , 1999,
Abstract: Microstructures of single layer of telluride and telluride/ZnS multilayer on Si and Ge substrates were investigated by XRD and TEM. The correlation between adhesion and microstructure of layers was given.
INVESTIGATION OF MICROCONSTRUCTURE OF NANOMATERIAL Fe2O3 BY POSITRON LIFETIME SPECTROSCOPY
钠米材料Fe2O3微结构的正电子寿命谱学研究

PENG YU-QING,WANG TAO,ZHOU SHI-YAO,BU WEI,ZHANG LI-DE,
彭郁卿
,王涛,周诗瑶,卜为,张立德

物理学报 , 1994,
Abstract: 用X射线衍射确定了纳米材料Fe2O3的平均粒径。测量了正电子的寿命。给出了平均粒径随退火温度的变化和短寿命成分τ1、中等寿命成分τ2以及它们的强度比I2/I1随平均粒径的变化。讨论了纳米材料Fe2O3的界面结构、平均正电子寿命τ与多普勒展宽谱S参效间的对应关系。
Investigation of slide-away discharges in HT-7 tokamak
HT-7托卡马克等离子体slide-away放电研究

Lu Hong-Wei,Hu Li-Qun,Lin Shi-Yao,Zhong Guo-Qiang,Zhou Rui-Jie,Zhang Ji-Zong,
卢洪伟
,胡立群,林士耀,钟国强,周瑞杰,张继宗

物理学报 , 2010,
Abstract: In tokamak plasmas, the discharge will turn into "runaway" discharge if the density decays to a critical one. The discharge will enter into "slide-away" discharge if the density reaches a lower level. The slide-away discharge is characterized by high confinement of superthermal electrons which constitute a large part of plasma current. In HT-7 Tokamak, the slide-away discharge is achieved by reducing the plasma density. The relationship between plasma current and critical density of slide-away discharge is investigated. It is also find that the increase of density in slide-away discharge can make the confinement of superthermal electrons poor and lots of superthermal electrons lost from the vacuum chamber.
STUDY OF TWO-PHOTON OPTICAL BISTABILITY
双光子光学双稳态的研究

ZHU SHI-YAO,
朱诗尧

物理学报 , 1984,
Abstract: By using quantum method and decorrelation approximation, the twophoton bistability equation in three level atom medium is obtained. The conclusions are consistent with experiment results. The shortcomings in treating this problem by using two-photon vecter model are pointed out.
Esophageal mucosal lesion with low-dose aspirin and prasugrel mimics malignancy: A case report
Gui-Fen Ma,Hong Gao,Shi-Yao Chen
World Journal of Gastroenterology , 2011, DOI: 10.3748/wjg.v17.i35.4048
Abstract: Dual antiplatelet therapy consisting of low-dose aspirin (LDA) and other antiplatelet medications is recommended in patients with coronary heart disease, but it may increase the risk of esophageal lesion and bleeding. We describe a case of esophageal mucosal lesion that was difficult to distinguish from malignancy in a patient with a history of ingesting LDA and prasugrel after implantation of a drug-eluting stent. Multiple auxiliary examinations were performed to make a definite diagnosis. The patient recovered completely after concomitant acid-suppressive therapy. Based on these findings, we strongly argue for the evaluation of the risk of gastrointestinal mucosal injury and hemorrhage if LDA therapy is required, and we stress the paramount importance of using drug combinations in individual patients.
The reversibility of the Goos-H?nchen shift near the band-crossing structure of one-dimemsional photonic crystals containing left-handed metamaterials
Li-Gang Wang,Shi-Yao Zhu
Physics , 2009,
Abstract: We perform a theoretical investigation on the Goos-H\"achen (GH) shift in one-dimensional photonic crystals (1DPCs) containing left-handed metamaterials (LHMs). We find an unusal effect of the GH shift near the photonic band-crossing structure, which is located at the condition, $% -k_{z}^{(A)}d_{A}=k_{z}^{(B)}d_{B}=m\pi $ $(m=1,2,3...)$, under the inclined incident angle, here A denotes the LHM layer and B denotes the dielectric layer. Above the frequency of the band-crossing point (BCP), the GH shift changes from negative to positive as the incident angle increases, while the GH shift changes reversely below the BCP frequency. This effect is explained in terms of the phase property of the band-crossing structure.
More Detailed Descriptions of Locality and Realism
Ping-Xing Chen,Shi-Yao Zhu
Physics , 2007,
Abstract: Many experiments have shown that locality-realism theory is at variance with quantum mechanics predictions. Although locality and realism, which are two different conceptions, are given respective definition, the descriptions of the both are a little of abstract when they are applied to real experimental situations. The abstract descriptions result in difficulty for one to judge whether the variance come from locality or realism or both. Here we provide more detailed descriptions of locality and realism, and show that any system being in a pure state or a non-maximally mixed state has property of non-realism. We also present experimental schemes feasible under current technologies to test the non-locality realsim. The connections between non-locality and entanglement and correlation are also discussed.
Electronic Band gaps and transport properties inside graphene superlattices with one-dimensional periodic squared potentials
Li-Gang Wang,Shi-Yao Zhu
Physics , 2010, DOI: 10.1103/PhysRevB.81.205444
Abstract: The electronic transport properties and band structures for the graphene-based one-dimensional (1D) superlattices with periodic squared potentials are investigated. It is found that a new Dirac point is formed, which is exactly located at the energy which corresponds to the zero (volume) averaged wavenumber inside the 1D periodic potentials. The location of such a new Dirac point is robust against variations in the lattice constants, and it is only dependent on the ratio of potential widths. The zero-averaged wavenumber gap associated with the new Dirac point is insensitive to both the lattice constant and the structural disorder, and the defect mode in the zero-averaged wavenumber gap is weakly dependent on the insident angles of carriers.
An optical diode made from a `flying' photonic crystal
Da-Wei Wang,Joerg Evers,Shi-Yao Zhu
Physics , 2012, DOI: 10.1103/PhysRevLett.110.093901
Abstract: Optical diodes controlling the flow of light are of principal significance for optical information processing 1. They transmit light from an input to an output, but not in reverse direction. This breaking of time reversal symmetry is typically achieved via non-linear 2,3 or magnetic effects 4, which imposes limits to all-optical control 5-7, on-chip integration 7-11, or single-photon operation 12. Here, we propose an optical diode which requires neither magnetic fields nor strong input fields. It is based on a flying photonic crystal. Due to the Doppler effect, the crystal has a band gap with frequency depending on the light propagation direction relative to the crystal motion. Counter-intuitively, our setup does not involve the movement of any material parts. Rather, the flying photonic crystal is realized by optically inducing a spatially periodic but moving modulation of the optical properties of a near-resonant medium. The flying crystal not only opens perspectives for optical diodes operating at low light levels or integrated in small solid state devices, but also enables novel photonic devices such as optically tunable mirrors and cavities.
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