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Search Results: 1 - 10 of 155420 matches for " LI Rui-feng "
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Demonstration of Deutsch's Algorithm on a Stable Linear-Optical Quantum Computer
Pei Zhang,Rui-Feng Liu,Yun-Feng Huang,Hong Gao,Fu-Li Li
Physics , 2010, DOI: 10.1103/PhysRevA.82.064302
Abstract: We report an experimental demonstration of quantum Deutsch's algorithm by using linear-optical system. By employing photon's polarization and spatial modes, we implement all balanced and constant functions for quantum computer. The experimental system is very stable and the experimental data are excellent in accordance with the theoretical results.
Structure and catalytic performance in cyclohexane oxidation of macrocyclic heterodinuclear complexes encapsulated in SBA-15

GAO Li-juan,LI Rui-feng,

燃料化学学报 , 2007,
Abstract: 合成了四个具有混合价态的大环d-f异双核配合物M1M2L](NO3)(H2O)n(L代表配体).采用浸渍法将四个d-f异双核配合物分别固载在中孔分子筛SBA-15上制得负载催化材料.SBA-15采用微波加热法合成.IR、UV-vis、 XRD、 ICP-AES和 TG/DTA技术表征表明,异双核配合物被固载后,配合物结构仍保持完整.以环己烷氧化为探针反应, 考察了上述负载催化材料的催化性能,并分析了不同金属离子或取代基对催化剂活性及选择性的影响.同时还系统考察了溶剂、反应时间、反应温度、对环己烷氧化反应的影响.结果表明,该催化剂在环己烷氧化反应中具有较好的活性及稳定性.
Wigner-Ville Distribution Associated with the Linear Canonical Transform
Rui-Feng Bai,Bing-Zhao Li,Qi-Yuan Cheng
Journal of Applied Mathematics , 2012, DOI: 10.1155/2012/740161
Abstract: The linear canonical transform is shown to be one of the most powerful tools for nonstationary signal processing. Based on the properties of the linear canonical transform and the classical Wigner-Ville transform, this paper investigates the Wigner-Ville distribution in the linear canonical transform domain. Firstly, unlike the classical Wigner-Ville transform, a new definition of Wigner-Ville distribution associated with the linear canonical transform is given. Then, the main properties of the newly defined Wigner-Ville transform are investigated in detail. Finally, the applications of the newly defined Wigner-Ville transform in the linear-frequency-modulated signal detection are proposed, and the simulation results are also given to verify the derived theory.
Liang-Zhong Xu,Rui-Feng Yin,Hong-Xin Li
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810009426
Abstract: In the title compound, C11H15N5O2, the 1,3,5-triazine ring exhibits a half-chair conformation. An intramolecular N—H...O interaction occurs. In the crystal structure, molecules are connected by intermolecular C—H...O and N—H...N hydrogen bonds, forming a zigzag chain along the b axis.
Xue-Hua Zhu,Xiao-Yuan Yang,Rui-Feng Song,Hai-Yan Li
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811028066
Abstract: In the title coordination polymer, [HgBr2(C14H10N4S2)]n, the HgII atom is four-coordinated in a distorted tetrahedral geometry by the two N atoms of the pyridyl groups of different 3,6-bis(2-pyridylsulfanyl)pyridazine ligands and two Br atoms. The bridging function of the cis ligands leads to a helical chain structure along [100].
Ultrasound-guided biopsy of superficial lymph node:an analysis of 308 patients
Rui-feng XU,Ni-na WANG,Jin-zhang CHEN,Ai-min LI
Medical Journal of Chinese People's Liberation Army , 2011,
Abstract: Objective To evaluate the clinical significance of ultrasound-guided needle biopsy in diagnosis of enlarged lymph nodes by analyzing the data of 308 patients who received ultrasound-guided lymph node biopsy.Methods Data of 308 patients who underwent ultrasound-guided lymph node biopsy in the Oncology Center of Nanfang Hospital from Jan.1,2003 to Jun.30,2010 were collected.The age,sex,lymph node size and location,and pathological types of the patients were analysed.Simultaneously,the influence of lymph node size,location and pathological type on pathological diagnosis was studied.Results The average age of 308 patients,including 192 males and 116 females,was 53.4 years,ranging from 12 to 87 years.There were 307 satisfactory specimens from 308 cases with which definite histological diagnosis accuracy reaching 99.7%.In 232 cases malignancy was found(75.3%),benign lesions in 41(13.3%),false negative was found in 25(8.1%),and uncertain in 9(2.9%),poor specimen in 1(0.3%),and the diagnosis of malignant lymphoma was found in 82.8% of the first biopsy specimens.Conclusion Ultrasound-guided biopsy for superficial lymph node is a safe and effective method which can not be substituted in diagnosis of lymph node pathology.In addition,due to the use of 16G cutting needle,it also has better diagnostic value in the diagnosis of malignant lymphoma.
Multi-Beam Interference Transmission Spectrum Observed from an Eccentric Core Single-Mode Fiber

FAN Lin-Yong,JIANG Wei-Wei,ZHAO Rui-Feng,PEI Li,JIAN Shui-Sheng,

中国物理快报 , 2011,
Self-adaptive overload control mechanism for clusters with multi-tier architecture

ZHENG Rui-feng,FEI Yao-ping,LI Min,

计算机应用研究 , 2009,
Abstract: This paper contributed a self-adaptive overload control(SAOC) mechanism,which did not require any prior information on the incoming traffic or manual configuration of key parameters.The monitor module took measures to analyze the relationship between the observed response time(RT) and the rate of admitted sessions.SAOC mechanism guarantees better service level agreements,shortens the response time,self-optimizes the resource utilization rapidly.
An experimental scheme to verify the dynamics of the Aharonov--Bohm effect

Wang Rui-Feng,

中国物理 B , 2009,
Abstract: There are two different viewpoints on the Aharonov--Bohm (A--B) effect. One asserts that the A--B effect is due to the existence of the vector potential A. The other asserts that the A--B effect is due to the interaction energy between the magnetic field produced by the moving charges and the magnetic field in the solenoid. The difference of these two viewpoints is analyzed in this paper. To judge which viewpoint is right, this paper suggests a new experimental method.
Theoretical investigation of local structure for ZnF2:Ni2+ Crystal

FENG Wen-lin,CHEN Tai-hong,LI Tie,LI Rui-feng,

重庆邮电大学学报(自然科学版) , 2006,
Abstract: 从光谱和EPR数据出发,用完全对角化方法确定了ZnF:Ni 晶体中的23(4 515 键长与键角,证实了 ZnF:Ni晶体的局域结构畸变的存在%研究结果表明,ZnF:Ni晶体与/01( 基晶的结构参数对比,发现掺杂23(4 离子的ZnF:Ni晶体分别产生了沿. 轴的伸长畸变和在,平面的压缩畸变.光谱和,-.参量计算的理论值与实验值非常接近.
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