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Binary Nonlinearization of the Nonlinear Schr?dinger Equation Under an Implicit Symmetry Constraint

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Acta Mathematicae Applicatae Sinica 2014年第2期30卷 379-388页

作者： jing YU jing-song HE Yi CHENG School of Science Hangzhou Dianzi University Department of Mathematics University of Science and Technology of China School of Science Ningbo University

By modifying the procedure of binary nonlinearization for the AKNS spectral problem and its adjoint spectral problem under an implicit symmetry constraint, we obtain a finite dimensional system from the Lax pair of th... 详细信息

关键词： an implicit symmetry constraint binary nonlinearization AKNS system completely integrable Hamiltonian system

A study of the perforation of stiffened plates by rigid projectiles

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Acta Mechanica Sinica 2005年第6期21卷 582-591页

作者： Jianguo Ning Weidong song jing Wang State Key Laboratory of Explosion Science and TechnologyBeijing Institute of Technology Beijing 100081 China

In the present paper, a four-stage perforation model that accurately predicts the residual velocity is developed by adopting an energy method. The four stages are plug formation, dishing formation, petal formation and projectile exit. In addition, some important experimental results are presented and analyzed to validate the present perforation model. In the experiments, high speed camera system is used to record the perforation process. Observations on target damage and measurements of initial velocities and residual velocities with the aid of the system are presented. Numerical simulations are carried out for projectiles against single and layered plates adopted in the experiments. The perforation process is studied and the deformation and failure modes are obtained. The predictions of numerical simulations and analytical model are found in reasonably good agreement with those of experiments, and can be used to predict the ballistic limit and residual velocity of stiffened plates perforated by rigid projectiles.

关键词： Perforation Penetration Impact Stiffened plate Numerical simulations Failure modes

A two-step zircon decomposition method to produce zirconium oxychloride:alkali fusion and water leaching

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Rare Metals 2020年第4期39卷 448-454页

作者： jing song jing-Fei Fan jing-Chong Liu Ran Liu jing-Kui Qu Tao Qi National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringChinese Academy SciencesBeijing 100190China School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100China

In this work,a two-step zircon method to produce zirconium oxychloride was introduced,and the alkali fusion technique with NaOH and water leaching process were *** effects of the operating conditions on the decomposition of zircon were determined,and the optimal conditions are as follows:alkali/zircon mass ratio of 0.7 at the first step and 0.6 at the second step(0.7+0.6),fusion temperature of 700℃and fusion time of 0.5 h at the first step and 0.5 h at the second step(0.5+0.5 h).Under these conditions,the decomposition alloy of zircon sand can reach 97.25%.In the fusion process of zircon sand,the products of first step are mainly Na2ZrO3 and ZrSiO4,the products of second step are Na2ZrO3 and Na2SiO3,and the diffraction peaks of Na2ZrSiO5 are not *** conditions of water leaching process were investigated as well,and the optimal conditions are as follows:liquid-solid ratio of 5:1,leaching time of 0.5 h,leaching temperature of 50℃and leaching three *** these conditions,the contents of leaching products SiO2 and Na2O are 3.51%(40%ZrO2)and 4.46%(40%ZrO2),*** crystal phase structures of Na2ZrO3 and Na2SiO3 are formed in water leaching process.

关键词： Zirconium oxychloride Zircon Two-step alkali fusion Water leaching

Does the Amati Relation depend on the Luminosity of the GRB's Host Galaxy?

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Chinese Journal of Astronomy and Astrophysics 2008年第3期8卷 255-261页

作者： jing Wang jing-song Deng Yu-Lei Qiu National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China

In order to test the systematics of the Amati relation, 24 long-duration GRBs with available Eγ,iso and Ep are separated into two subgroups according to the B-band luminosity of their host galaxies. The Amati relations in the two subgroups are found to be in agreement with each other within the uncertainties. Taking into account of the well established luminosity - metallicity relation of galaxies, no strong evolution of the Amati relation with the GRB＇s environmental metaUicity is implied in this study.

关键词： gamma-rays bursts -- gamma-rays observations -- galaxies evolution

Controlled Secure Quantum Dialogue Using a Pure Entangled GHZ States

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Communications in Theoretical Physics 2007年第5X期48卷 841-846页

作者： XIA Yan song Jie NIE jing song He-Shan School of Physics and Optoelectronic Technology Dalian University of Technology Dalian 116024 China

We present a controlled secure quantum dialogue protocol using a non-maximally （pure） entangled Greenberger-Horne-Zeibinger （GHZ） states at first, and then discuss the requirements for a real quantum dialogue. We show that the authorized two users can exchange their secret messages after purifying the non-maximally entangled GHZ states quantum channel unconditionally securely and simultaneously under the control of a third party.

关键词： controlled secure quantum dialogue eavesdropper non-maximally entangled GHZ state

Hereditarily covering properties of inverse sequence limits

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Frontiers of Mathematics in China 2013年第4期8卷 987-997页

作者： Bin ZHAO Aili song jing WEI Department of Mathematics Kashi Teachers College Kashi 844007 China

Let {Xi,πki,ω} be an inverse sequence and X -- lim{Xi,πki,ω）. If each Xi is hereditarily （resp. metaLindelSf, σ-metaLindelSf, σ-orthocompact, weakly suborthocompact, δθ-refinable, weakly θ-refinable, weakly... 详细信息

关键词： Inverse sequence limit hereditarily metaLindelofness hereditarily weakly suborthocompactness hereditarily δθ-refinability hereditarily weakly θ-refinability countable product

A New Quantum Communication Scheme by Using Bell States

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Communications in Theoretical Physics 2006年第2期45卷 271-274页

作者： CAO Hai-jing CHEN jing song He-Shan Department of Physics Dalian University of Technology Dalian 116024 China

A new quantum communication scheme based on entanglement swapping is presented. Simplified calculation symbols are adopted to realize the process. Quantum key distribution and quantum secure direct communication can be simultaneously accomplished in the scheme. Two legitimate communicators can secretly share four certain key bits and four random key bits via three EPR pairs （quantum channels）.

关键词： quantum key distribution quantum secure direct communication Bell-state measurements security

Assessment of Soil Water Content in Field with Antecedent Precipitation Index and Groundwater Depth in the Yangtze River Estuary

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Journal of Integrative Agriculture 2013年第4期12卷 711-722页

作者： XIE Wen-ping YANG jing-song State Key Laboratory of Soil and Sustainable Agriculture/Institute of Soil Science Chinese Academy of Sciences

To better understand soil moisture dynamics in the Yangtze River Estuary （YRE） and predict its variation in a simple way, a field monitoring experiment was carried out along the north branch of the Yangtze River, where seawater intrusion was strong and salt-water variation is one of the limiting factors of local agriculture. In present paper, relation between antecedent precipitation index （API） and soil water content is studied, and effects of groundwater depth on soil water content was analyzed. A relatively accurate prediction result of soil water content was reached using a neural network model. The impact analysis result showed that the variation of the API was consistent with soil water content and it displayed significant correlations with soil water content in both 20 and 50 cm soil layer, and higher correlation was observed in the layer of 20 cm. Groundwater impact analysis suggested that soil moisture was affected by the depth of groundwater, and was affected more greatly by groundwater at depth of 50 cm than that at 20 cm layer. By introducing API, groundwater depth and temperature together, a BP artificial network model was established to predict soil water content and an acceptable agreement was achieved. The model can be used for supplementing monitoring data of soil water content and predicting soil water content in shallow groundwater areas, and can provide favorable support for the research of water and salt transport in estuary area.

关键词： antecedent precipitation index groundwater depth soil water content assessment

Reduction and melting separation mechanism of boron-bearing iron concentrate/coal composite pellet

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Journal of Iron and Steel Research International 2018年第3期25卷 310-319页

作者： Guang Wang Qing-guo Xue jing-song Wang State Key Laboratory of Advanced Metallurgy University ofScience and Technology Beijing Beijing 100083 China

Realizing the boron and iron separation through selective reduction and melting separation of boron-bearing iron con- centrate is of great significance for the utilization of crude ludwigite. The reduction and melting separation mechanism of boron-bearing iron concentrate/coal composite pellet was systematically investigated. The reduction and melting separation test of small size pellet was performed to reveal the evolution of slag and iron in the melting separation process. The isothermal reduction experiment showed the relationship between reduction stage and melting separation stage, and the step reduction and melting separation was perfectly achieved. Coal particles existed through the reduction and melting separation process and finally formed brown residue around the separated product. The pellet could not realize melting separation when the B2O3 content in the concentrate was lower than 6.00 wt%.

关键词： Boron-bearing iron concentrate Composite pellet-Reduction Melting separation-Mechanism