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| 1 | Three-dimensional in situ stress determination by anelastic strain recovery and its application at the Wenchuan Earthquake Fault Scientific Drilling Hole-1(WFSD-1)显示文摘In situ stress state becomes more and more significant with in-depth research on geodynamics and energy development.However,there has not been an economic and effective method developed to determine deep three-dimensional in situ stress.The Anelastic Strain Recovery(ASR)method is a newly developed technique that can determine three-dimensional in situ stresses.After the 12 May 2008 Ms8.0 Wenchuan earthquake,the ASR method was used for the first time in China's Mainland to measure the in situ stresses in the WFSD scientific boreholes in Sichuan Province,China.In this paper,the basic procedure of the ASR method is introduced in detail and the compliances of ASR for boring cores are investigated.The results show that the maximum principal stress direction was NW64°at a measured depth(MD)of 1173 m(vertical depth 1151 m)in WFSD-1.The ratio of shear mode to the volume mode compliance of ASR was 2.9.And the three principal stresses at 1173 m MD in WFSD-1are 43,28 and 25 MPa.Combined with stress measurement results determined using other in situ measurement methods along the Longmenshan fault zone,the directions of the maximum horizontal principal stress changes from E-W to NEE-SWW to NWW-SEE when moving from NE to SW along the Longmenshan fault zone.This change is in agreement with the stress regime of the Longmenshan fault zone of the Wenchuan Earthquake,which supports a stress regime consisting predominantly of thrusts in the southwest and strike-slip in the northeast. | SUN DongSheng LIN WeiRen CUI JunWen WANG HongCai CHEN QunCe MA YinSheng WANG LianJie | 2014 | Science China Earth Sciences2014，57，6： | 10 |
| 2 | Analysis of the Wenchuan Ms8.0 Earthquake's Co-seismic Stress and Displacement Change by Using the Finite Element Method显示文摘The variation of in situ stress before and after earthquakes is an issue studied by geologists. In this paper, on the basis of the fault slip dislocation model of Wenchuan Ms8.0 earthquake, the changes of co-seismic displacement and the distribution functions of stress tensor around the Longmen Shan fault zone are calculated. The results show that the co-seismic maximum surface displacement is 4.9 m in the horizontal direction and 6.5 m in the vertical direction, which is almost consistent with the on-site survey and GPS observations. The co-seismic maximum horizontal stress in the hanging wall and footwall decreased sharply as the distance from the Longmen Shan fault zone increased. However, the vertical stress and minimum horizontal stress increased in the footwall and in some areas of the hanging wall. The study of the co-seismic displacement and stress was mainly focused on the long and narrow region along the Longmen Shan fault zone, which coincides with the distribution of the earthquake aftershocks. Therefore, the co-seismic stress only affects the aftershocks, and does not affect distant faults and seismic activities. The results are almost consistent with in situ stress measurements at the two sites before and after Wenchuan Ms8.0 earthquake. Along the fault plane, the co-seismic shear stress in the dip direction is larger than that in the strike direction, which indicates that the faulting mechanism of the Longmen Shan fault zone is a dominant thrust with minor strike-slipping. The results can be used as a reference value for future studies of earthquake mechanisms. | SUN Dongsheng WANG Lianjie WANG Hongcai MA Yinsheng ZHOU Chunjing CUI Junwen | 2013 | Acta Geologica Sinica(English Edition)2013，87，4： | 9 |
| 3 | ALOX15-launched PUFA-phospholipids peroxidation increases the susceptibility of ferroptosis in ischemia-induced myocardial damage显示文摘Myocardial ischemia/reperfusion(/R)injury is a classic type of cardiovascular disease characterized by injury to cardiomyocytes leading to various forms of cell death.It is believed that irreversible myocardial damage resulted from I/R occurs due to oxidative stress evoked during the reperfusion phase.Here we demonstrate that ischemia triggers a specific redox reaction of polyunsaturated fatty acids(PUFA)-phospholipids in myocardial cells,which acts as a priming signaling that initiates the outbreak of robust oxidative damage in the reperfusion phase.Using animal and in vitro models,the crucial lipid species in I/R injury were identifed to be oxidized PUFAs enriched phosphatidylethanolamines.Using multi-omics,arachidonic acid 15-lipoxygenase-1(ALOx15)was identified as the primary mediator of ischemia-provoked phospholipid peroxidation,which was further confirmed using chemogenetic approaches.Collectively,our results reveal that ALOx15 induction in the ischemia phase acts as a'burning point'to ignite phospholipid oxidization into ferroptotic signals.This finding characterizes a novel molecular mechanism for myocardial ischemia injury and offers a potential therapeutic target for early intervention of V/R injury. | Xiao-Hui Ma Jiang-Han-Zi Liu Chun-Yu Liu Wan-Yang Sun Wen-Jun Duan Guan Wang Hiroshi Kuriara Rong-Rong He Yi-Fang Li Yang Chen Hongcai Shang | 2022 | Signal Transduction and Targeted Therapy2022，7，9： | 2 |
| 4 | A meshadjustable molecular sieve for general use in gas separation显示文摘 | MA Shengqian SUN Daofeng ZHOU Hongcai | 2007 | AngewandteChemie-International Edition2007，，46： | 1 |
| 5 | Earthquake magnitude estimation using the s_c and P_d method for earthquake early warning systems显示文摘Earthquake early warning(EEW) systems are one of the most effective ways to reduce earthquake disaster.Earthquake magnitude estimation is one of the most important and also the most difficult parts of the entire EEW system. In this paper, based on 142 earthquake events and253 seismic records that were recorded by the KiK-net in Japan, and aftershocks of the large Wenchuan earthquake in Sichuan, we obtained earthquake magnitude estimation relationships using the scand Pdmethods. The standard variances of magnitude calculation of these two formulas are ±0.65 and ±0.56, respectively. The Pdvalue can also be used to estimate the peak ground motion of velocity, then warning information can be released to the public rapidly,according to the estimation results. In order to insure the stability and reliability of magnitude estimation results, we propose a compatibility test according to the natures of these two parameters. The reliability of the early warning information is significantly improved though this test. | Xing Jin Hongcai Zhang Jun Li Yongxiang Wei Qiang Ma | 2013 | Earthquake Science2013，26，1： | 1 |
| 6 | Easy-aligned off-axis three-mirror system with wide field of view using freeform surface based on integration of primary and tertiary mirror显示文摘 | Meng Qingyu Wang Wei Ma Hongcai | 2014 | Applied Optics2014，53，14： | 1 |
| 7 | Wind Power Prediction Based on Multi-class Autoregressive Moving Average Model with Logistic Function显示文摘The seasonality and randomness of wind present a significant challenge to the operation of modern power systems with high penetration of wind generation. An effective shortterm wind power prediction model is indispensable to address this challenge. In this paper, we propose a combined model, i.e.,a wind power prediction model based on multi-class autoregressive moving average(ARMA). It has a two-layer structure: the first layer classifies the wind power data into multiple classes with the logistic function based classification method;the second layer trains the prediction algorithm in each class. This two-layer structure helps effectively tackle the seasonality and randomness of wind power while at the same time maintaining high training efficiency with moderate model parameters. We interpret the training of the proposed model as a solvable optimization problem. We then adopt an iterative algorithm with a semi-closed-form solution to efficiently solve it. Data samples from open-source projects demonstrate the effectiveness of the proposed model. Through a series of comparisons with other state-of-the-art models, the experimental results confirm that the proposed model improves not only the prediction accuracy,but also the parameter estimation efficiency. | Yunxuan Dong Shaodan Ma Hongcai Zhang Guanghua Yang | 2022 | Journal of Modern Power Systems and Clean Energy2022，10，5： | 1 |
| 8 | Non-lie symmetry groups of (2+l)-dimensional nonlinear systems obtained from a simple direct method显示文摘 | Lou Senyue Ma Hongcai | 2005 | J Phys A: Math Gen2005，38，： | 1 |
| 9 | Non-Lie symmetry groups of (2+1)-dimensional nonlinear systems obtained from a simple direct method显示文摘 | LOU Senyue MA Hongcai | 2005 | J Phy A:Math Gen2005，38，12： | 1 |
| 10 | The auxiliary equation method for solving the Zakharov-Kuznetsov (ZK) equation 显示文摘 | MA Hongcai YU Yaodong GE Dongjie | 2009 | Comput Appl2009，58，1112： | 1 |
| 11 | The variety of thermal conduction resulting from segmented degree of heat source body and its bearing on temperature change显示文摘The differences of thermal conduction and its temperature-varying track of the heat source body at various structural environments have been studied. Hypothetically, geologic heat source body is cut successively into several segregative bodies with a fixed cubage. With the segmented number increasing, the conductive surface area of heat source body begins to get larger, which separately is similar to the heat geologic body in different tectonic zones that has a various enclosed coefficient η(η=S0/sum from i=(1,n)(Si)). Finite-element simulation result shows that the thermal conduction speed of spreading from the heat source body to its wall rock is slow→higher→highest, when heat source bodies are situated respectively at compressive, shear and tensile deformation zones, corresponding rates of their temperature drop are low→higher→highest. Research indicates that the temperature’s dropping rate of heat source body has an inverse relationship with enclosed coefficient η for different structural | Guxian Lü Hongcai Wang Tao Guo Yinsheng Ma Daogong Hu | 1999 | Chinese Science Bulletin1999，44，15： | 1 |
| 12 | Experimental models of traumatic axo- nal injury 显示文摘 | WANG Hongcai MA Yanbin | 2009 | Joumal of Clinical Neuroscience2009，17，15： | 1 |
| 13 | Progress of the earthquake early warning system in Fujian, China显示文摘In this article, we systematically introduce the latest progress of the earthquake early warning(EEW)system in Fujian, China. We focus on the following key technologies and methods: continuous earthquake location and its error evaluation; magnitude estimation; reliability judgment of EEW system information; use of doubleparameter principle in EEW system information release threshold; real-time estimation of seismic intensity and available time for target areas; seismic-monitoring network and data sharing platform; EEW system information release and receiving platform; software test platform; and test results statistical analysis. Based on strong ground motion data received in the mainshock of the Wenchuan earthquake, the EEW system developed by the above algorithm is simulated online, and the results show that the system can reduce earthquake hazards effectively. In addition, we analyzed four earthquake cases with magnitude greater than 5.5 processed by our EEW system since the online-testing that was started one year ago, and results indicate that our system can effectively reduce earthquake hazards and have high practical significance. | Xing Jin Yongxiang Wei Jun Li Hongcai Zhang Qiang Ma Lanchi Kang | 2013 | Earthquake Science2013，26，1： | 0 |
| 14 | Interaction solutions for the(2+1)-dimensional extended Boiti-Leon-Manna-Pempinelli equation in incompressible fluid显示文摘This paper aims to search for the solutions of the(2+1)-dimensional extended Boiti–Leon–Manna–Pempinelli equation.Lump solutions,breather solutions,mixed solutions with solitons,and lump-breather solutions can be obtained from the N-soliton solution formula by using the long-wave limit approach and the conjugate complex method.We use both specific circumstances and general higher-order forms of the hybrid solutions as examples.With the help of maple software,we create density and 3D graphs to summarize the dynamic properties of these solutions.Additionally,it is possible to observe how the solutions'trajectory,velocity,and shape vary over time. | Hongcai Ma Xue Mao Aiping Deng | 2023 | Communications in Theoretical Physics2023，75，8： | 0 |
| 15 | Graphene Oxide-Induced Substantial Strengthening of High-Entropy Alloy Revealed by Micropillar Compression and Molecular Dynamics Simulation显示文摘Plastic deformation mechanisms at micro/nanoscale of graphene oxide-reinforced high-entropy alloy composites(HEA/GO)remain unclear.In this study,small-scale mechanical behaviors were evaluated for HEA/GO composites with 0.0 wt.%,0.3 wt.%,0.6 wt.%,and 1.0wt.%GO,consisting of compression testing on micropillar and molecular dynamics(MD)simulations on nanopillars.The experimental results uncovered that the composites exhibited a higher yield strength and flow stress compared with pure HEA micropillar,resulting from the GO reinforcement and grain refinement strengthening.This was also confirmed by the MD simulations of pure HEA and HEA/GO composite nanopillars.The immobile<100>interstitial dislocations also participated in the plastic deformation of composites,in contrast to pure HEA counterpart where only mobile 1/2<111>perfect dislocations dominated deformation,leading to a higher yield strength for composite.Meanwhile,the MD simulations also revealed that the flow stress of composite nanopillar was significantly improved due to GO sheet effectively impeded dislocation movement.Furthermore,the mechanical properties of HEA/1.0 wt.%GO composite showed a slight reduction compared with HEA/0.6 wt.%GO composite.This correlated with the compositional segregation of Cr carbide and aggregation of GO sheets,indicative of lower work hardening rate in stress-strain curves of micropilar compression. | Wei Zhang Hongcai Xie Zhichao Ma Hongwei Zhao Luquan Ren | 2023 | Research2023，，1： | 0 |
| 16 | General M-lump,high-order breather,and localized interaction solutions to(2+1)-dimensional generalized Bogoyavlensky-Konopelchenko equation显示文摘The(2+1)-dimensional generalized Bogoyavlensky-Konopelchenko equation is a significant physical model.By using the long wave limit method and confining the conjugation conditions on the interrelated solitons,the general M-lump,high-order breather,and localized interaction hybrid solutions are investigated,respectively.Then we implement the numerical simulations to research their dynamical behaviors,which indicate that different parameters have very different dynamic properties and propagation modes of the waves.The method involved can be validly employed to get high-order waves and study their propagation phenomena of many nonlinear equations. | Hongcai MA Yunxiang BAI Aiping DENG | 2022 | Frontiers of Mathematics in China2022，17，5： | 0 |
| 17 | Dynamical analysis of diversity lump solutions to the(2+1)-dimensional dissipative Ablowitz-Kaup-Newell-Segure equation显示文摘The lump solution is one of the exact solutions of the nonlinear evolution equation.In this paper,we study the lump solution and lump-type solutions of(2+1)-dimensional dissipative Ablowitz-Kaup-Newell-Segure(AKNS)equation by the Hirota bilinear method and test function method.With the help of Maple,we draw three-dimensional plots of the lump solution and lump-type solutions,and by observing the plots,we analyze the dynamic behavior of the(2+1)-dimensional dissipative AKNS equation.We find that the interaction solutions come in a variety of interesting forms. | Hongcai Ma Yidan Gao Aiping Deng | 2022 | Communications in Theoretical Physics2022，74，11： | 0 |
| 18 | ENVIRONMENTAL DAMAGE OF CAST Ni-BASE SUPERALLOY K17显示文摘Rupture and tensile properties of K17 before and after thermal exposure in vacuum,air andhot corrosion environments have been investigated.The results show that vacuum exposure es-sentially does not affect the rupture lives but it results in the decrease of high temperature ten-sile strength and increases of rupture and high temperature tensile ductilities;air or hot corro-sion environmental exposure results in the degradation of alloy:severely reduce the ruptureand high temperature tensile properties,hot corrosion environmental exposure being moreharmful.The former causes grain boundary oxidation and depletion of Cr,and the latermakes the sulphurization at grain boundaries.This results in the concentration of S and de-pletion of Cr at grain boundaries and,consequently,weakens the grain boundaries. | GUO Jianting HUANG Rongfang Institute of Metal Research,Academia Sinica,Shenyang,ChinaYANG Hongcai MA Jun Northeast University of Technology,Shenyang,China GUO Jianting,Associate Professor,Institute of Metal Research,Academia Sinica,Shengyang,China | 1989 | Acta Metallurgica Sinica(English Letters)1989，2，1： | 0 |
| 19 | Soliton molecules and some novel hybrid solutions for the(2+1)-dimensional generalized Konopelchenko–Dubrovsky–Kaup–Kupershmidt equation显示文摘Soliton molecules have become one of the hot topics in recent years. In this article, we investigate soliton molecules and some novel hybrid solutions for the(2+1)-dimensional generalized Konopelchenko–Dubrovsky–Kaup–Kupershmidt(gKDKK) equation by using the velocity resonance, module resonance, and long wave limits methods. By selecting some specific parameters, we can obtain soliton molecules and asymmetric soliton molecules of the gKDKK equation. And the interactions among N-soliton molecules are elastic. Furthermore, some novel hybrid solutions of the gKDKK equation can be obtained, which are composed of lumps,breathers, soliton molecules and asymmetric soliton molecules. Finally, the images of soliton molecules and some novel hybrid solutions are given, and their dynamic behavior is analyzed. | Hongcai Ma Qiaoxin Cheng Aiping Deng | 2020 | Communications in Theoretical Physics2020，72，9： | 0 |
| 20 | Speech on the Symposium of Commemorating the 40th Anniversary of Sino-Japanese Treaty of Peace and Friendship显示文摘on February 6 th, 2018, the Symposium of Commemorating the 40 th Anniversary of Sino-Japanese Treaty of Peace and Friendship organized by Chinese Association for International Understanding was staged at Wanshou Hotel, Beijing. Liu Hongcai, Vice President of Chinese Association for International Understanding and former Vice Minister of International Department of Central Committee of CPC attended and addressed the meeting. More than 30 representatives, respectively form Chinese social organizations and institutions such as All-China Youth Federation, All-China Women's Federation, Chinese Association for Japanese Studies, People's China, visiting representatives of Broad National Coalition of Liberty, Peace and Democracy, as well as from the Beijing branch of Japanese non-governmental organizations and institutions such as Council of Local Authorities for International Relations, Beijing. Representatives from both China and Japan made heated discussion and actively contributed to themes such as giving full play to the role of nongovernmental organizations, enhancing bilateral communication and improving bilateral relations. The following is the address delivered by Liu Hongcai on the symposium. | Liu Hongcai Ma Jiatai(译) | 2018 | International Understanding2018，，1： | 0 |
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