|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Numerical simulation of spatial distributions of mining-induced stress and fracture fields for three coal mining layouts显示文摘In this study, the spatial distributions of stress and fracture fields for three typical underground coal mining layouts, i.e. non-pillar mining(NM), top-coal caving mining(TCM) and protective coal-seam mining(PCM), are modeled using discrete element software UDEC. The numerical results show that different mining layouts can lead to different mining-induced stress fields, resulting in diverse fracture fields. For the PCM, the mining influenced area in front of the mining faces is the largest, and the stress concentration factor in front of the mining faces is the lowest. The spatial shapes of the mining-induced fracture fields under NM, TCM and PCM differ, and they are characterized by trapezoidal, triangular and tower shapes, respectively. The fractal dimensions of mining-induced fractures of the three mining layouts decrease in the order of PCM, TCM and NM. It is also shown that the PCM can result in a better gas control effect in coal mines with high outburst potential. The numerical results are expected to provide a basis for understanding of mining-induced gas seepage fields and provide a reference for highefficiency coal mining. | Shengwei Li Mingzhong Gao Xiaojun Yang Ru Zhang Li Ren Zhaopeng Zhang Guo Li Zetian Zhang Jing Xie | 2018 | Journal of Rock Mechanics and Geotechnical Engineering2018，10，5： | 3 |
| 2 | High-pressure phases of Weyl semimetals NbP, NbAs, TaP,and TaAs显示文摘In this study, we used the crystal structure search method and first-principles calculations to systematically explore the highpressure phase diagrams of the TaAs family(NbP, NbAs, TaP, and TaAs). Our calculation results show that NbAs and TaAs have similar phase diagrams, the same structural phase transition sequence I4_1 md→P6 m2→P2_1/c→Pm3 m, and slightly different transition pressures. The phase transition sequence of NbP and TaP differs somewhat from that of NbAs and TaAs, in which new structures emerge, such as the Cmcm structure in NbP and the Pmmn structure in TaP. Interestingly, we found that in the electronic structure of the high-pressure phase P6 m2-NbAs, there are coexistingWeyl points and triple degenerate points, similar to those found in high-pressure P6 m2-TaAs. | ZhaoPeng Guo PengChao Lu Tong Chen JueFei Wu Jian Sun DingYu Xing | 2018 | Science China(Physics,Mechanics & Astronomy)2018，61，3： | 2 |
| 3 | Evidence for a Dirac nodal-line semimetal in SrAs_3显示文摘Dirac nodal-line semimetals with the linear bands crossing along a line or loop, represent a new topological state of matter. Here, by carrying out magnetotransport measurements and performing first-principle calculations, we demonstrate that such a state has been realized in high-quality single crystals of SrAs_3.We obtain the nontrivial ∏ Berry phase by analysing the Shubnikov-de Haas quantum oscillations. We also observe a robust negative longitudinal magnetoresistance induced by the chiral anomaly.Accompanying first-principles calculations identifies that a single hole pocket enclosing the loop nodes is responsible for these observations. | Shichao Li Zhaopeng Guo Dongzhi Fu Xing-Chen Pan Jinghui Wang Kejing Ran Song Bao Zhen Ma Zhengwei Cai Rui Wang Rui Yu Jian Sun Fengqi Song Jinsheng Wen | 2018 | Science Bulletin2018，63，9： | 2 |
| 4 | Radiation pre-vulcanization effect on properties of the truck tyre's transition layer and the truck tyre显示文摘In this paper,the natural rubber is chosen as the main constituents for the transition layer of all-steel load radial tyre,which is pre-vulcanized by 500-keV E-beam irradiation of up to 60 kGy.The results show that the green strength of transitional layer increases with the dose,reaching four times as much as the control(without irradiation) at 60 kGy.The final mechanical properties do not differ significantly from those of the control except that the aging and fatigue performance increased.However,thickness of the natural rubber transitional layer for an average single tyre can be reduced by 1 mm(or 1.5 kg) without obvious adverse effect on tyre performance. | YANG Mingcheng ZHANG Benshang ZHU Jun LI Zhaopeng LI Kunhao GUO Dongquan ZHANG Hongna | 2013 | Nuclear Science and Techniques2013，24，2： | 2 |
| 5 | In situ generation and detection of methyl radical by voltammetry显示文摘In persulfate-acetate, dimethyl sulfoxide or tert-butyl alcohol systems, in situ generation and detection of methyl free radical are realized with voltammetry. It includes the following successive processes. The persulfate S2O82 is polarographically reduced via one-electron addition to sulfate radical SO4, the SO4 initiates chain reaction with acetate, dimethyl sulfoxide, or tert-butyl alcohol on the electrode surface to produce a methyl radical, and one-electron reduction of the methyl radical yields its polarographic reduction wave. In comparison with the known techniques such as ultraviolet radiolysis coupling with electron spin resonance, etc., the proposed method is simple, sensitive and selective. | SONG Junfeng CHEN Zhaopeng GUO Wei WANG Fumin | 2003 | Chinese Science Bulletin2003，48，11： | 1 |
| 6 | Determining dimensionalities and multiplicities of crystal nets显示文摘Low-dimensional materials have attracted significant attention over the past decade.To discover new low-dimensional materials,high-throughput screening methods for structures with target dimensionality have been applied in different materials databases.For this purpose,the reliability of dimensionality identification is therefore highly important.In this work,we find that the existence of self-penetrating nets may lead to incorrect results by previous methods.Instead of this,we use the quotient graph to analyse the topologies of structures and compute their dimensionalities. | Hao Gao Junjie Wang Zhaopeng Guo Jian Sun | 2020 | npj Computational Materials2020，，1： | 1 |
| 7 | SC1 inhibits the differentiation of F9 embryonic carcinoma cells induced by retinoic acid显示文摘 | Yingxiang Liu Xuexue Ren Jie Ke Yan Zhang Qing Wei Zhaopeng Shi Zhiying Ai Zekun Guo | 2018 | Acta Biochimica et Biophysica Sinica2018，50，8： | 0 |
| 8 | Unprotected quadratic band crossing points and quantum anomalous Hall effect in FeB_(2) monolayer显示文摘Quadratic band crossing points(QBCPs)and quantum anomalous Hall effect(QAHE)have attracted the attention of both theoretical and experimental researchers in recent years.Based on first-principle calculations,we find that the FeB_(2) monolayer is a nonmagnetic semimetal with QBCPs at K.Through symmetry analysis and k·p invariant theory,we find that the QBCP is not protected by rotation symmetry and consists of two Dirac points with the same chirality(Berry phase of 2π).Once introducing Coulomb interactions,we find that there is a spontaneous-time-reversal-breaking instability of the spinful QBCPs,which gives rise to a C=2 QAH insulator with orbital moment ordering. | DongYu Wu YunPeng Huang Song Sun JiaCheng Gao ZhaoPeng Guo HongMing Weng Zhong Fang Kun Jiang ZhiJun Wang | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，5： | 0 |
| 9 | Canopy Carbon Exchange on a Coarse-Sand-Field, No-tillage Peach Orchard显示文摘 | Zhaopeng Ou Yang Yuzhong Li Xurong Mei Jiaxuan Guo | 2012 | Journal of Agricultural Science and Technology(B)2012，2，8： | 0 |
| 10 | Proof of Aerobically Autoxidized Self-Charge Concept Based on Single Catechol-Enriched Carbon Cathode Material显示文摘The self-charging concept has drawn considerable attention due to its excellent ability to achieve environmental energy harvesting,conversion and storage without an external power supply.However,most self-charging designs assembled by multiple energy harvesting,conversion and storage materials increase the energy transfer loss;the environmental energy supply is generally limited by climate and meteorological conditions,hindering the potential application of these selfpowered devices to be available at all times.Based on aerobic autoxidation of catechol,which is similar to the electrochemical oxidation of the catechol groups on the carbon materials under an electrical charge,we proposed an air-breathing chemical self-charge concept based on the aerobic autoxidation of catechol groups on oxygen-enriched carbon materials to ortho-quinone groups.Energy harvesting,conversion and storage functions could be integrated on a single carbon material to avoid the energy transfer loss among the different materials.Moreover,the assembled Cu/oxygen-enriched carbon battery confirmed the feasibility of the air-oxidation self-charging/electrical discharging mechanism for potential applications.This air-breathing chemical self-charge concept could facilitate the exploration of high-efficiency sustainable air self-charging devices. | Junyan Wang Wanchun Guo Kesong Tian Xinta Li Xinyu Wang Panhua Li Yu Zhang Bosen Zhang Biao Zhang Shuhu Liu Xueai Li Zhaopeng Xu Junjie Xu Haiyan Wang Yanglong Hou | 2024 | Nano-Micro Letters2024，16，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员