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Acta Seismologica Sinica(English Edition) 2001年第3期14卷 263-273页

作者： zhou rong-jun 1. Seismological Bureau of Sichuan Province 610041 Chengdu China

The geometry of the Qianning-Kangding segment of the Xianshuihe fault zone is quite complex, and it is composed of four secondary-faults, i.e., the Yalahe fault, Selaha-Kangding fault, Zeduotang fault and Moxi fault. On this segment, three strong earthquakes with M greater than or equal 7.0 occurred in 1725, 1786 and 1955, respectively. Based on a study of fault landform and geochronology (14C and Thermoluminesense), this paper documents the average horizontal slip rates during the late-Quaternary on all the secondary-faults of the Qianning-Kangding segment as follows: Yalahe fault: (2.0±0.2) mm/a; Selaha-Kangding fault: (5.5±0.6) mm/a; Zeduotang fault: (3.6±0.3) mm/a; Moxi fault: (9.9±0.6) mm/a. The results from the investigation of surface ruptures of historical earthquakes, coseismic-slip and paleo-earthquakes show that the strong-earthquake recurrence intervals are thousands of years on the Yalahe fault, and 230 to 350 years on the Selaha-Kangding and Zeduotang faults. In the next one hundred years, the recurrence of a strong-earthquake on these faults appears impossible. However, the strong-earthquake recurrence interval on the Moxi fault is about 300 years. Up to now, it has been 214 years since the last earthquake (magnitude 7 3/4) occurred in 1786, therefore, this fault is now approaching the condition favorable for the next strong earthquake recurrence.

关键词： slip rate recurrence interval fault landform paleo-earthquake seismic potential P315.72+5

A MODIFIED HSS ITERATION METHOD FOR SOLVING THE COMPLEX LINEAR MATRIX EQUATION AXB = C

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Journal of Computational Mathematics 2016年第4期34卷 437-450页

作者： rong zhou XiangWang Peng zhou Department of Mathematics School of Sciences Nanchang University Nanchang China Numerical Simulation and High-Performance Computing Laboratory School of Sciences Nanchang University Nanchang China

In this paper, a modified Hermitian and skew-Hermitian splitting （MHSS） iteration method for solving the complex linear matrix equation AXB = C has been presented. As the theoretical analysis shows, the MHSS iteration method will converge under cer- tain conditions. Each iteration in this method requires the solution of four linear matrix equations with real symmetric positive definite coefficient matrices, although the original coefficient matrices are complex and non-Hermitian. In addition, the optimal parameter of the new iteration method is proposed. Numerical results show that MHSS iteration method is efficient and robust.

关键词： MHSS iteration method HSS iteration method Linear matrix equation.

Effects of C and Mn elements on deformation-enhanced ferrite transformation in low carbon (Mn) steels

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Journal of University of Science and Technology Beijing 2005年第6期12卷 507-511页

作者： rongfeng zhou Wangyue Yang rong zhou Zuqing Sun Faculty of Mechanical and Electrical Engineering Kunming University of Science and Technology Kunming 650093 China Materials Science and Engineering School University of Science and Technology Beijing Beijing 100083 China

Effects of C and Mn contents on the deformation-enhanced ferrite transformation （DEFT） in low carbon （Mn） steels have been investigated by hot compression. The microstructures of 2-4μm ultra-fine equiaxed ferrite grains with minors distributed homogeneously can be obtained by DEFT in all the tested steels. The more pronounced refinement is achieved as the C or Mn content increasing because of the higher-density nucleating sites and lower growth rate. The effectiveness of C on the level of refinement is more obvious than that of Mn.

关键词： deformation-enhanced transformation ferrite grain refinement low carbon steel manganese steel

Progresses and Prospects of Asymmetrically Coordinated Single Atom Catalysts for Lithium-Sulfur Batteries

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Energy & Environmental Materials 2024年第4期7卷 48-63页

作者： rong zhou Shaonan Gu Meng Guo Shuzheng Xu Guowei zhou Key Laboratory of Fine Chemicals in Universities of Shandong Jinan Engineering Laboratory for Multi-scale Functional MaterialsSchool of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China

Lithium-sulfur batteries(LSBs)are widely regarded as promising next-generation batteries due to their high theoretical specific capacity and low material ***,the practical applications of LSBs are limited by the shuttle effect of lithium polysulfides(LiPSs),electronic insulation of charge and discharge products,and slow LiPSs conversion reaction ***,the introduction of catalysts into LSBs is one of the effective strategy to solve the issues of the sluggished LiPS *** of their nearly 100%atom utilization and high electrocatalytic activity,single-atom catalysts(SACs)have been widely used as reaction mediators for LSBs’***,the SACs with asymmetric coordination structures have exhibited intriguing electronic structures and superior catalytic activities when compared to the traditional M-N_(4)active *** this review,we systematically describe the recent advancements in the installation of asymmetrically coordinated single-atom structure as reactions catalysts in LSBs,including asymmetrically nitrogen coordinated SACs,heteroatom coordinated SACs,support effective asymmetrically coordinated SACs,and bimetallic coordinated *** noteworthy is the discussion of the catalytic conversion mechanism of LiPSs spanning asymmetrically coordinated ***,a perspective on the future developments of asymmetrically coordinated SACs in LSB applications is provided.

关键词： asymmetrical coordination conversion catalysis Li-S batteries shuttle effect single atom catalysts

Surface properties of nitrogen-ion-implanted TiNi shape memory alloy

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Journal of University of Science and Technology Beijing 2006年第2期13卷 154-157页

作者： Chongyan Leng Teruo Asaoka rong zhou School of Materials and Metallurgical Engineering Kunming University of Science and Technology Kunming 650093 China Department of Intelligent and Mechanical Engineering Tokyo Denki University Hatoyama Hiki-Gun Saitama 350-0394 Japan School of Mechanical Engineering Kunming University of Science and Technology Kunming 650093 China

X-ray diffraction （XRD）, auger electron spectroscopy （AES）, and X-ray photoelectron spectroscopy （XPS） were used to characterize the surface properties of the N^ ＋-ion-implanted TiNi alloy. There is a high nitrogen content region at the outermost surface of the N^＋-ion-implanted TiNi alloy. The detected nitrogen exists mainly in the form of TiN. Small amounts of Ti305 and TiO2 also exist on the surface of the N^＋-ion-implanted TiNi sample. The modified layer of the N^＋-ion-implanted sample can work as an obstacle layer of the nickel＇s dissolution, which obstructs Ni dissolving from the TiNi surface effectively.

关键词： shape memory alloys TiNi surface properties

The rice PLATZ protein SHORT GRAIN6 determines grain size by regulating spikelet hull cell division

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Journal of Integrative Plant Biology 2020年第6期62卷 847-864页

作者： Shi-rong zhou Hong-Wei Xue National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and Ecologythe Chinese Academy of SciencesShanghai 200032China State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research CenterNanjing Agricultural UniversityNanjing 210095China School of Agriculture and Biology Shanghai Jiao Tong UniversityShanghai 200240China

Grain size is a major determinant of cereal grain yields;however,the relevant regulatory mechanisms controlling this trait have not been fully *** rice(Oryza sativa)mutant short grain6(sg6)was identified based on its reduced grain length and ***,we functionally characterized the role of SG6 in determining grain size through the regulation of spikelet hull cell ***6 encodes a previously uncharacterized plant ATrich sequence and zinc-binding(PLATZ)protein that is ubiquitously localized throughout the cell and is preferentially expressed in the early developing panicles but not in the *** overexpression of SG6 resulted in significantly larger and heavier grains,as well as increased plant heights,which is consistent with its elevated spikelet hull cell division *** two-hybrid analyses revealed that SG6 interacts with the core cell cycle machinery DP protein and several other putative cell division regulators,consistent with our transcriptomic analysis,which showed that SG6 activates the expression of many DNA replication and cell-cycle-related *** results confirm the crucial role of SG6 in determining grain size by regulating spikelet hull cell division and provide clues for understanding the functions of PLATZ family proteins and the network regulating cereal grain size.

关键词： sativa) fir cereal

Impurity effects of theΛhyperon in the hypernuclear systems^(25)ΛMg and(29)ΛSi

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Communications in Theoretical Physics 2021年第11期73卷 116-121页

作者： Ji-Wei Cui Xian-rong zhou School of Physics and Optoelectronic Engineering Xidian UniversityXi'an 710071China Department of Physics East China Normal UniversityShanghai 200241China

Based on the beyond-mean-field Skyrme-Hartree-Fock model,impurity effects of theΛhyperon in the hypernuclear systems^(25)ΛMg and^(29)ΛSi are investigated,*** cases,in which theΛhyperon occupies the single-particle orbitals L[000]1+/2,L[110]1-/2,L[101]3-/2 and L[101]1-/2,are *** each case,the potential energy surface and the energy curves projected on certain angular momenta are employed to show the influence of theΛhyperon on the nuclear *** the shrinkage effect that is induced by theΛhyperon occupying the sΛorbital,it is found that theΛhyperon on the pΛorbital,L[110]1-/2,drives the nuclear core toward a prolate shape,while the ones on the other two pΛorbitals,L[101]3-/2 and L[101]1-/2,drive the nuclear core toward an oblate *** energy spectra and the corresponding intra-band E2 transition rates for the rotational bands are given as a prediction for future experiments.

关键词： Λhypernuclei Skyrme-Hartree-Fock model angular momentum projection generator coordinate method

RIVERINE INORGANIC CARBON DYNAMICS:OVERVIEW AND PERSPECTIVE

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Chinese Geographical Science 2006年第2期16卷 183-191页

作者： YAO Guan-rong GAO Quan-zhou School of Geographical Science and Planning SUN Yat-Sen University Guangzhou 510275 P. R. China

Inorganic carbon, the great part of the riverine carbon exported to the ocean, plays an important role in the global carbon cycle and ultimately impacts the coupled carbon-climate system. An overview was made on both methods and results of the riverine inorganic carbon researches. In addition to routine in situ survey, measurement and calculation, the direct precipitation method and the gas evolution technique were commonly used to analyze dissolved inorganic carbon in natural water samples. Soil CO2, carbonate minerals and atmospheric CO2 incorporated into riverine inorganic car- bon pool via different means, with bicarbonate ion being the dominant component. The concentration of inorganic carbon, the composition of carbon isotopes （8^13C and △^14C）, and their temporal or spatial variations in the streams were controlled by carbon input, output and changes of carbon biogeochemistry within the riverine system. More accurate flux es- timation, better understanding of different influential processes, and quantitative determination of various inputs or outputs need to be well researched in future.

关键词： riverine inorganic carbon dissolved inorganic carbon dynamics flux

Deformation characteristic of semi-solid ZCuSn10 copper alloy during isothermal compression

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Rare Metals 2016年第8期35卷 620-626页

作者： Jia Wang Han Xiao Long-Biao Wu Hai-Lian Hu De-Hong Lu rong-Feng zhou rong zhou College of Materials Science and Engineering KunmingUniversity of Science and TechnologyKunming 650093China College of Mechanical Engineering Sichuan University ofScience and EngineeringZigong 643000China

The compression tests were carried out by Gleeble-1500 thermo-mechanical simulator with samples of semi-solid ZCuSnl0 alloy prepared by strain-induced melt activation （SIMA） process. The original microstruc- ture and the deformation temperature of semi-solid ZCuSnl0 alloy are different. The strain is 0.2, and the strain rate is 1 s-1 for the compression test. The results show that when the semi-solid ZCuSnl0 alloy was pre- pared by SIMA process, the liquid fraction of semi-solid microstructure increases, and the solid grain is smaller, more uniform and more inclined to be round as the roiling pre-deformation increasing. The results also indicate that the deformation resistance of ZCuSnl0 alloy in semi-solid state decreases with the deformation temperature increas- ing or the solid fraction of original microstructure de- creasing. The stress-strain curves of the isothermal compression can be divided into quasi-elastic deformation stage and plastic deformation stage, and there are three deformation zones in the samples after isothermal com- pression, namely the difficult deformation zone, the large deformation zone and the free deformation zone. In the three deformation zones, the main deformation mechanism is flow of liquid incorporating solid particles （FLS） mechanism, plastic deformation of solid particles （PDS） mechanism and liquid flow （LF） combining with FLS mechanism, respectively.

关键词： ZCuSn10 copper alloy Semi-solid Isothermal compression Deformation characteristic

Effects of Rare Earth,Titanium,and Magnesium Additions on Microstructures and Properties of High-boron Medium-carbon Alloy

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Journal of Iron and Steel Research International 2016年第11期23卷 1226-1233页

作者： Xiao-li SHI Ye-hua JIANG rong zhou Faculty of Materials Science and Engineering Kunming University of Science and Technology

In order to improve the toughness and wear resistance of high-boron medium-carbon alloy （HBMCA）, a novel wear-resistant HBMCA comprising granular borocarbide was obtained by titanium, magnesium, and rare earth modifications. These modifications gave rise to greatly refined as-cast eutectic borocarbide structures and a less interconnected continuous borocarbide network. Heat treatment mostly produced broken and spheriodized borocarbides that tended to exist as isolated particles in modified HBMCA. The heat treated modified HBMCA exhibited enhanced hardness than pristine and impact toughness was improved significantly to 12.5 J/cm^2. In addition, it displayed 2.39 and 1.7 times greater wear resistance than high-speed steel （HSS） and high nickel-chromium alloy steel （Cr25） at high temperature （500℃）, respectively. Here, the modification mechanisms involving Re2O3, TiN, and MgO/ MgS heterogeneous nuclei were discussed.

关键词： modification eutectic borocarbide spheroidization toughness wear resistance