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Angular momentum dependence of quasifission dynamics in the reaction ^(48)Ca+^(244)Pu

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Science China(Physics,Mechanics & Astronomy) 2017年第9期60卷 22-27页

作者： Chong Yu lu guo School of Physics University of Chinese Academy of Sciences

The quasifission dynamics in the reaction ^(48)Ca+^(244)Pu is investigated in the framework of time-dependent Hartree-Fock(TDHF)theory. The calculations are performed in three-dimensional Cartesian coordinate without any symmetry restrictions. The full Skyrme energy functional is incorporated in our TDHF implementation. The quasifission dynamics is quite sensitive to the angular momentum of colliding system. The contact time of quasifission decreases as a function of angular momentum and then forms a plateau with small oscillations. The quasifission process is accompanied by an important multi-nucleon transfer. The quantum shell effect plays a crucial role in the mass and charge of quasifission fragments. The mass-angle distribution of the fragments is calculated, which can be compared directly with future experiments.

关键词： quasifission superheavy element time-dependent Hartree-Fock (TDHF)

Production of proton-rich actinide nuclei in the multinucleon transfer reaction 58Ni+232Th

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Science China(Physics,Mechanics & Astronomy) 2020年第4期63卷 155-158页

作者： ZhenJi Wu lu guo School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China

In recent years,multinucleon transfer reactions have attracted significant attention for their potential to synthesize new exotic *** nuclei are difficult to be produced in fusion-evaporation reactions and fragmentation processes due to the extremely small production cross sections and/or the lack of appropriate projectile-target *** the early 1970s,multinucleon transfer reactions have been used for the production of the light neutron-rich isotopes [1].

关键词： transfer fragmentation nucleon

Zeolite polymer membrane as protective interface for Mg battery

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Rare Metals 2024年第9期43卷 4636-4638页

作者： Hai-Xia Wu Kai-lu guo College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China

Excessive electrolyte decomposition seriously determines the performance of high-voltage Mg batteries. In Nazar's work, the strategy using a zeolite polymer membrane as a protective interface was proposed to restrain the electrolyte decomposition. This strategy could boost Mg plating/stripping performance up to 6000 h in zeolite/Mg|zeolite/Mg symmetric cells and 91%capacity retention in zeolite/Mg||Mo_(3)S_(4)battery after 200 *** storage devices have been intensively explored because of their important roles in our daily lives [1D3].

关键词： zeolite interface electrolyte

Nuclei-rich galvanizing strategy for suppressing zinc dendrite growth

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Rare Metals 2024年第8期43卷 4016-4018页

作者： Hai-Xia Wu Kai-lu guo College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China

The uncontrolled growth of zinc dendrites on zinc anode hinders the application of zinc ion *** solve this problem,lu's group proposed a nuclei-rich galvanizing strategy for suppressing the zinc dendrite *** allows the nuclei-rich zinc electrode to cycle steadily for1200 h and have a high Coulombic efficiency of 99.7%at15 mA·cm^(-2)with a deposited amount of 10 mAh·cm^(-2).Moreover,the Zn-MnO_(2) battery with a low N/P ratio of 1.9exhibited sustained cycling life.

关键词： cycling sustained battery

Preparation,characterization and catalytic behavior of hierachically porous CuO/α-Fe_2O_3/SiO_2 composite material for CO and o-DCB oxidation

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Journal of Natural Gas Chemistry 2011年第6期20卷 618-622页

作者： Xiaodong Ma Xi Feng Xuan He Hongwen guo lu lu Key Laboratory of Environmental Pollution Process and Standard Ministry of Education Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and Engineering Nankai University Tianjin 300071 China

Hierachically porous （HP） CuO/α-Fe2O3/SiO2 composite material was fabricated by sol-gel method and multi-hydrothermal processes using HP-SiO2 as *** resulting material was characterized by N2 adsorption-desorption,X-ray diffraction and scanning electron *** as-prepared CuO/Fe2O3/HP-SiO2 sample,with α-Fe2O3 and CuO nanocrystals,possessed a co-continuous skeleton,through-macroporous and mesoporous *** catalytic behavior for CO and o-DCB oxidation was *** result showed that CuO/Fe2O3/HP-SiO2 catalyst exhibited high catalytic activity for both CO and o-DCB oxidation,indicating its potential application in combined abatement of CO and chlorinated volatile organic compounds.

关键词： CO and o-DCB oxidation hierachically porous CuO/α-Fe2O3/HP-SiO2 monolith

Tracking people through partial occlusions

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The Journal of China Universities of Posts and Telecommunications 2009年第2期16卷 117-121页

作者： lu Jian-guo CAI An-hi School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

This article presents a novel people-tracking approach to cope with partial occlusions caused by scene objects. Instead of predicting when and where the occlusions will occur, a part-based model is used to model the pixel distribution of the target body under occlusion. The subdivided patches corresponding to a template image will be tracked independently using Markov chain Monte Carlo （MCMC） method. A set of voting-based rules is established for the patch-tracking result to verify if the target is indeed located at the estimated position. Experiments show the effectiveness of the proposed method.

关键词： partial occlusion part-based model MCMC voting-based rules

THEORY AND METHOD FOR WETLAND BOUNDARY DELINEATION

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Chinese Geographical Science 2006年第1期16卷 56-62页

作者： YIN Shu-bai lu Xian-guo Northeast Institute of Geography and Agroeeology Chinese Aeademy of Seiences Changchun 130012 P. R. China Graduate School of Chinese Academy of Sciences Beijing 100049 P. R. China

Based on the analysis of the subjectivity of wetland boundary criteria and their causes at present, this paper suggested that, under the condition that the mechanism of wetland formation process has not been understood, "black box" method of System Theory can be used to delineate wetland boundaries scientifically. After analyzing the difference of system construction among aquatic habitats, wetlands and uplands, the lower limit of rooted plants was chosen as the lower boundary criterion of wetlands. Because soil diagnostic horizon is the result of the long-term interaction among all environments, and it is less responsive than vegetation to short-term change, soil diagnostic horizon was chosen as the indicator to delineate wetland upper boundary, which lies at the thinning-out point of soil diagnostic horizon. Case study indicated that it was feasible using the lower limit of rooted plants and the thinning-out point of soil diagnostic horizon as criteria to delineate the lower and upper boundaries of wetland. In the study area, the thinning-out line of albic horizon was coincident with the 55.74m contour line, the maximum horizon error was less than 1m, and the maximum vertical error less than 0.04m. The problem on wetland definition always arises on the boundaries. Having delineated wetland boundaries, wetlands can be defined as follows: wetlands are the transitional zones between uplands and deepwater habitats, they are a kind of azonal complex that are inundated or saturated by surface or ground water, with the lower boundary lying at the lower limit of rooted plants, and the upper boundary at the thinning-out line of upland soil diagnostic horizon.

关键词： wetland boundary "black box" method soil diagnostic horizon thinning-out point (line) wetland definition

Entrance-channel dynamics in the reaction 40Ca+208Pb

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Science China(Physics,Mechanics & Astronomy) 2019年第12期62卷 34-40页

作者： Xiao Yu Li Zhen Ji Wu lu guo School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing J00049China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China

The entrance-channel dynamics including capture, fusion, and quasifission processes for the reaction ^40Ca+^208Pb is investigated in the fully microscopic time-dependent Hartree-Fock(TDHF) theory. The calculations are performed in three-dimensional Cartesian coordinate without any symmetry restrictions, in which the full Skyrme energy functional SLy4d and SLy5 are *** study the energy dependence of capture cross sections, and find that the experimental data are well reproduced by the TDHF calculations. Both fusion and quasifission events are observed in the reaction ^40Ca+^208Pb. The contact time, mass and charge of quasifission fragments show a wide distribution in SLy4d compared with SLy5, implying that more nucleons are transferred in the SLy4d calculations. We find that the total kinetic energy of quasifission fragments in the TDHF calculations is distributed around Viola systematics, indicating that most of the relative kinetic energy is dissipated in quasifission dynamics.

关键词： capture fusion quasifission TDHF

Polaronic Electron-Phonon Interactions on the Third-Harmonic Generation in a Square Quantum Well

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Communications in Theoretical Physics 2006年第1期45卷 171-174页

作者： lu Zhi-En guo Kang-Xian Department of Physics Faculty of Sciences Guihuagang Campus Guangzhou University Guangzhou 510405 China

The influence of electron-phonon interactions on third-harmonic generation in a square quantum well is investigated. The first- and third-harmonic generation coefficient is obtained by using compact-density-matrix approach and iterative method, and the numerical results are presented for a GaAs square quantum well. The results show that the third-harmonic generation coefficient is obviously enhanced after considering the influence of electron-phonon interactions.

关键词： electron-phonon interactions third-harmonic generation nonlinearity