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Acta Mechanica Sinica 2006年第3期22卷 265-276页

作者： Zhiping qiu Xiaojun wang Institute of Solid Mechanics Beijing University of Aeronautics and Astronautics Beijing 100083 China

Two non-probabilistic, set-theoretical methods for determining the maximum and minimum impulsive responses of structures to uncertain-but-bounded impulses are presented. They are, respectively, based on the theories of interval mathematics and convex models. The uncertain-but-bounded impulses are assumed to be a convex set, hyper-rectangle or ellipsoid. For the two non-probabilistic methods, less prior information is required about the uncertain nature of impulses than the probabilistic model. Comparisons between the interval analysis method and the convex model, which are developed as an anti-optimization problem of finding the least favorable impulsive response and the most favorable impulsive response, are made through mathematical analyses and numerical calculations. The results of this study indicate that under the condition of the interval vector being determined from an ellipsoid containing the uncertain impulses, the width of the impulsive responses predicted by the interval analysis method is larger than that by the convex model; under the condition of the ellipsoid being determined from an interval vector containing the uncertain impulses, the width of the interval impulsive responses obtained by the interval analysis method is smaller than that by the convex model.

关键词： Impulsive response Interval analysis method Convex model Uncertain-but-bounded impulse

Internal structural optimization of hollow fan blade based on sequential quadratic programming algorithm

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航空动力学报 2011年第4期26卷 787-793页

作者： YANG Jian-qiu wang Yan-rong School of Jet Propulsion Beijing University of Aeronautics and Astronautics Beijing 100191 China

Several structural design parameters for the description of the geometric features of a hollow fan blade were determined.A structural design optimization model of a hollow fan blade which based on the strength constraint and minimum mass was established based on the finite element method through these ***,the sequential quadratic programming algorithm was employed to search the optimal *** groups of value for initial design variables were chosen,for the purpose of not only finding much more local optimal results but also analyzing which discipline that the variables according to could be benefit for the convergence and *** surface method and Monte Carlo simulations were used to analyze whether the objective function and constraint function are sensitive to the variation of variables or *** the robust results could be found among a group of different local optimal solutions.

关键词： hollow fan blade structural optimization sequential quadratic algorithm finite element method Monte Carlo simulations

Scheme for Remote Implementation of Partially Unknown Quantum Operation of Two Qubits in Cavity QED

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Communications in Theoretical Physics 2008年第11期50卷 1233-1236页

作者： qiu Liang wang An-Min Quantum Theory Group Department of Modern Physics University of Science and Technology of China Hefei 230026China

By constructing the recovery operations of the protocol of remote implementation of partially unknownquantum operation of two qubits[An-Min wang:***.A 74(2006)032317]with two-qubit Cnot gate and singlequbit logic gates,we present a scheme to implement it in cavity ***-lived Rydberg atoms are used as qubits,and the interaction between the atoms and the field of cavity is a nonresonant ***,we analyze the experimentalfeasibility of this scheme.

关键词： remote implementation cavity QED partially unknown quantum operation

Bacterial leaching of discarded copper ores from Yongping, China

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Journal of University of Science and Technology Beijing 2005年第4期12卷 294-297页

作者： Muqing qiu Genxuan wang Zhuxia Shen College of Life Sciences Zhejiang University Hangzhou 310029 China

The elementary and phase analysis of discarded copper ores from Yongping of China has been performed. The experi- ments of extracting copper from the discarded copper ores were done with the mixed bacteria obtained through a series of enrichment, separation, domestication and combination tests. The results show that in the process of bioleaching, the pH value rises at first and drops gradually. The Eh value keeps rising along with the time and the appropriate Eh value varying between 750 and 800 mV will benefit the bioleaching copper. The high concentration of ferric ions is detrimental to the bioleaching copper. The results of bioleaching copper are good. That is, the copper recovery is 31.8% after 27 days.

关键词： bioleaching discarded copper ores mixed bacteria

Fragmentation of N2 in 410 nm Intense Femtosecond Laser Field

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Chinese Journal of Chemical Physics 2009年第1期22卷 1-6页

作者： Wei Guo Jing-yi Zhu Yan-qiu wang Li wang State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China Graduate School of Chinese Academy of Sciences Beijing 100049 China

Fragmentations of N2 in linearly polarized femtosecond 410 and 820 nm intense laser fields were studied by using the velocity mapping technique. Different behaviors of N2 at 410 and 820 nm were observed. Both the kinetic energy distributions and angular distributions of fragment ions in 410 nm field show weak dependency on laser intensities in the non- saturation regime, in contrast to the case in 820 nm. Different excited electronic states, i.e., non-Coulombic potentials populated via vertical＇excitation, are suggested to play crucial roles in fragmentations at short wavelength.

关键词： Velocity mapping Non-Coulombic fragmentation Energy distribution Angular distribution

Provenance and tectonic setting of the Triassic Yidun Group, the Yidun Terrane, Tibet

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Geoscience Frontiers 2013年第6期4卷 765-777页

作者： Bai-qiu wang Wei wang Mei-Fu Zhou Department of Earth Sciences The University of Hong Kong

The Yidun Group extends from the Shangri-La region to the south and the Changtai region to the north,and is an important component of the Triassic Yidun arc in the eastern Tibetan *** is composed of the Lieyi,Qugasi,Tumugou and Lanashan Formations from the base *** the Lieyi and Lanashan Formations consist dominantly of black or gray slate and sandstone,whereas the Qugasi and Tumugou Formations have variable amounts of mafic to felsic volcanic rocks and turfs accompanied with gray slate and *** from the Yidun Group has variable CIA values from 55 to 76,indicative of mild to moderate weathering condition for the source *** the sandstones define a general weathering trend nearly parallel to the A-CN boundary in the A-CN-K triangular diagram,implying limited effect of diagenetic and post-depositional *** detrital quartz and feldspar grains of the sandstones suggest predominantly felsic *** high Y/Ni and low Cr/V ratios of sandstones from the Yidun Group indicate more contribution from felsic than mafic ***,the Yidun sandstones have Co/Th and La/Sc ratios generally similar to upper continental crust （UCC） and cluster between UCC and felsic sources,indicating felsic rocks as primary *** represents the average chemical composition of sources as evaluated by extending the predicted weathering trend back to the feldspar join in A-CN-K *** high Zr/Sc ratio or Hf concentration and Paleoproterozoic Nd modal ages （1.94-2.21 Ga）point to input of recycling components derived from old sedimentary source in a relatively stable tectonic setting.

关键词： Sandstone geochemistry Nd isotope Yidun Group Triassic Eastern Tibet

PARALLEL COMPUTING FOR STATIC RESPONSE ANALYSIS OF STRUCTURES WITH UNCERTAIN-BUT-BOUNDED PARAMETERS

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Acta Mechanica Solida Sinica 2008年第5期21卷 472-482页

作者： Zhiping qiu Xiaojun wang Xu Zhang Institute of Solid Mechanics Beijing University of Aeronautics and Astronautics Beijing 100083 China

The vertex solution for estimation on the static displacement bounds of structures with uncertain-but-bounded parameters is studied in this paper. For the linear static problem, when there are uncertain interval parameters in the stiffness matrix and the vector of applied forces, the static response may be an interval. Based on the interval operations, the interval solution obtained by the vertex solution is more accurate and more credible than other methods （such as the perturbation method）. However, the vertex solution method by traditional serial computing usually needs large computational efforts, especially for large structures. In order to avoid its disadvantages of large calculation and much runtime, its parallel computing which can be used in large-scale computing is presented in this paper. Two kinds of parallel computing algorithms are proposed based on the vertex solution. The parallel computing will solve many interval problems which cannot be resolved by traditional interval analysis methods.

关键词： vertex solution interval analysis UBB parallel computing

SARS-CoV-2 may impair pancreatic function via basigin: A single-cell transcriptomic study of the pancreas

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Asian Pacific Journal of Tropical Medicine 2021年第3期14卷 143-144页

作者： qiu-Ran wang School of Basic Medical Sciences Fujian Medical UniversityFuzhou China

The coronavirus disease 2019(COVID-19)due to SARS-CoV-2 infection is a major threat to global public ***-COV-2 not only activates the human immune system but also causes severe damage to multiple organs by binding to ... 详细信息

关键词： organs pancreas damage

Nickel-catalyzed kinetic resolution to achieve P-chiral phosphine oxides and sec-phosphine oxides

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Science China Chemistry 2023年第9期66卷 2569-2575页

作者： Xi Zhang Shao-qiu wang Shang-Dong Yang State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China School of Pharmaceutical Science Hangzhou Medical CollegeHangzhou 310012China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

P-Chiral phosphines and sec-phosphine oxides(SPO) are found in a diverse range of compounds that play crucial roles in various fields, including asymmetric catalysis, materials, agrochemistry, and pharmaceutical chemistry. Herein, we describe an enantioselective Ni-catalyzed kinetic resolution of racemic sec-phosphine oxides to obtain the corresponding optically pure Pchiral phosphine oxides and sec-phosphine oxides, respectively. These products are versatile chiral phosphine building blocks that can be used to construct an extensive range of P-chiral phosphines.

关键词： P-chiral phosphine oxide kinetic resolution Ni catalysis

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Tidal Bore Dynamics Around the Similar Right-Angle Shoreline in the Qiantang Estuary,China

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China Ocean Engineering 2022年第5期36卷 827-838页

作者： wang qiu-shun PAN Cun-hong CHEN Fu-yuan Zhejiang Institute of Hydraulics and Estuary Hangzhou 310020China Zhejiang Provincial Key Laboratory of Estuary and Coast Hangzhou 310020China

Tidal bores are a unique hydrodynamic phenomenon during flood tide in the Qiantang *** tidal bore propagation around the similar right-angle shoreline is rarely documented in tidal *** investigate tidal bores around this shoreline,a hydrodynamic model combined with a theoretical method is employed to reveal the characteristics of the bore *** theoretical solution of the tidal bore intensity is deduced to illustrate the relationship of the incident tidal bores and the back-flow bores during the *** hydrodynamic model based on shallow water equation is employed to perform the simulation of tidal bores in the *** results with respect to the bore height and the propagation speed of tidal bores have a favourable agreement with field *** tidal bore dynamics in the neighborhood of the similar right-angle shoreline are *** characteristics of tidal bores in terms of water surface,velocity,bore steepness and the intensity are illustrated and the back-flow bore is analyzed by numerical and theoretical methods around the similar right-angle *** height of the back-flow bore relative to the incident tidal bore ranges from 1.05 to *** result reveals that the ambient water depth and the shape of the similar right-angle shoreline are contributed to the back-flow bore formation.

关键词： back-flow bore numerical model shallow water equation Qiantang Estuary tidal bores