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| 1 | Chlorite cement and its effect on the reservoir quality of sandstones from the Panyu low-uplift,Pearl River Mouth Basin显示文摘Based on porosity and permeability measurements,mercury porosimetry measurements,thin section analyses,SEM observations,X-ray diffraction(XRD) analysis and granulometric analyses,diagenetic features of reservoir sandstones taken from the Zhuhai formation in the Panyu low-uplift of the Pear River Mouth Basin were examined.This study shows that chlorite cements are one of the most important diagenetic features of reservoir sandstones.The precipitation of chlorite was controlled by multiple factors and its development occurred early in eo-diagenesis and continued till Stage A of middle diagenesis.The precipitation of chlorite at the early stage was mainly affected by the sedimentary environment and provenance.Abundant Fe-and Mg-rich materials were supplied during the deposition of distributary channel sediments in the deltaic front setting and mainly in alkaline conditions.With the burial depth increasing,smectite and kaolinite tended to be transformed into chlorite.Smectite cements were completely transformed into chlorite in sandstones of the studied area.Volcanic lithics rich in Fe and Mg materials were dissolved and released Fe2+ and Mg 2+ into the pore water.These cations precipitated as chlorite cements in middle diagenesis in an alkaline diagenetic environment.Chlorite coatings acted as porosity and permeability,thus helping preserve cements in the chlorite cemented sandstones.The reservoir quality of chlorite cemented sandstones is much better than sandstones without chlorite cements.Chlorite cements play an important role in the reservoir evolution that was mainly characterized by preserving intergranular porosity and forming better pore-throat structures of sandstones. | Chen Guojun Du Guichao Zhang Gongcheng Wang Qi Lv Chengfu | 2011 | Petroleum Science2011,8,2: | 14 |
| 2 | Research on microstructure in as-cast 7A55 aluminum alloy and its evolution during homogenization显示文摘The microstructure of the as-cast 7A55 aluminum alloy and its evolution during homogenization were investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and differential scanning calorimetry (DSC) analysis. The results indicate that the microstructure of the as-cast 7A55 aluminum alloy mainly consists of the dendritic network of aluminum solid solution, Al/AlZnMgCu eutectic phases, and intermetallic compounds MgZn2, Al2CuMg, Al7Cu2Fe, and Al23CuFe4. After homogenization at 470°C for 48 h, Al/AlZnMgCu eutectic phases are dissolved into the matrix, and a small amount of high melting-point secondary phases were formed, which results in an increasing of the starting melting temperature of 7A55 aluminum alloy. The high melting-point secondary phases were eliminated mostly when the homogenization time achieved to 72 h. Therefore, the reasonable homogenization heat treatment process for 7A55 aluminum alloy ingots was chosen as 470°C/72 h. | LV Xinyu GUO Erjun LI Zhihui WANG Guojun | 2011 | Rare Metals2011,30,6: | 8 |
| 3 | Rational development of a human antibody cocktail that deploys multiple functions to confer Pan-SARS-CoVs protection显示文摘Structural principles underlying the composition and synergistic mechanisms of protective monoclonal antibody cocktails are poorly defined.Here,we exploited antibody cooperativity to develop a therapeutic antibody cocktail against SARS-CoV-2.On the basis of our previously identified humanized cross-neutralizing antibody H014,we systematically an a lyzed a fully human n aive antibody library and rationally identified a potent neutralizing antibody partner,P17,which confers effective protection in animal model.Cryo-EM studies dissected the nature of the P17 epitope,which is SARS-CoV-2 specific and distinctly different from that of HOI4.High-resolution structure of the SARS-CoV-2 spike in complex with HOM and P17,together with functional investigations revealed that in a two-antibody cocktail,synergistic neutralization was achieved by S1 shielding and conformational locking,thereby blocking receptor attachment and viral membrane fusion,conferring high potency as well as robustness against viral mutation escape.Furthermore,cluster analysis identified a hypothetical 3rd antibody partner for further reinforcing the cocktail as pan-SARS-CoVs therapeutics. | Hangping Yao Yao Sun Yong-Qiang Deng Nan Wang Yongcong Tan Na-Na Zhang Xiao-Feng Li Chao Kong Yan-Peng Xuc Qi Chen Tian-Shu Cao Hui Zhao Xintian Yan Lei Cao Zhe Lv Dandan Zhu Rui Feng Nanping Wu Wenhai Zhang Yuhao Hu Keda Chen Rong-Rong Zhang Qingyu Lv Shihui Sun Yunhua Zhou Run Yan Guan Yang Xinglu Chanjuan Liu Xiangyun Lu Linfang Cheng Hongying Qiu Xing-Yao Huang Tianhao Weng Danrong Shi Weidong Jiang Junbin Shao Lei Wang Jie Zhang Tao Jiang Guojun Lang Cheng-Feng Qinc Lanjuan Li Xiangxi Wang | 2021 | Cell Research2021,31,1: | 5 |
| 4 | Bevacizumab biosimilar LY01008 compared with bevacizumab(Avastin)as first-line treatment for Chinese patients with unresectable,metastatic,or recurrent non-squamous non-small-cell lung cancer:A multicenter,randomized,double-blinded,phase Ⅲ trial显示文摘Background:Previous studies have demonstrated the preclinical pharmacological and toxicological consistency,and clinical pharmacokinetic equivalence of bevacizumab biosimilar LY01008 with reference bevacizumab(Avastin).This randomized controlled trial aimed to compare the efficacy and safety of LY01008 with Avastin in first-line treatment of Chinese patients with advanced or recurrent non-squamous non-small cell lung cancer(NSCLC).Methods:StageⅢB-ⅣNSCLC patients with evaluable lesions,good physical status,and adequate organ functions from 67 centers across China were randomized in a ratio of 1:1 to receive LY01008 or Avastin 15 mg/kg intravenously in combination with paclitaxel/carboplatin(combined treatment)for 4-6 cycles,followed by maintenance monotherapy with LY01008 until disease progression,intolerable toxicity,or death.The primary endpoint was objective response rate(ORR)in accordance with Response Evaluation Criteria in Solid Tumors(RECIST)version 1.1 confirmed by independent radiological review committees(IRRC).Secondary endpoints included disease control rate(DCR),duration of response(DoR),progression-free survival(PFS),overall survival(OS),and safety.This study was registered in Clinical Trials.gov(NCT03533127).Results:Between December 15^(th),2017,and May 15^(th),2019,a total of 649 patients were randomized to the LY01008(n=324)or Avastin(n=325)group.As of September 25th,2019 for primary endpoint analysis,589 patients received ORR evaluation,with a median number of combined treatment cycles of 5(range 1-6)andmedian duration of treatment of 3.0(range 0.0-5.1)months.ORRof responseevaluable patients in the LY01008 and Avastin groups were 48.5% and 53.0%,respectively.The stratified ORR ratio was 0.91(90%CI 0.80-1.04,within the prespecified equivalence margin of 0.75-1.33).Up to May 15^(th),2020,with a median follow-up of 13.6(range 0.8-28.4)months,no notable differences in DCR,median DoR,median PFS,median OS,and 1-year OS rate were observed between the LY01008 and Avastin groups.There were no clinically meaningful differences in safety and immunogenicity across treatment groups.Conclusions:LY01008 demonstrated similarity to Avastin in terms of efficacy and safety in Chinese patients with advanced or recurrent non-squamous NSCLC.LY01008 combined with paclitaxel/carboplatin is expected to become a new treatment option for unresectable,metastatic,LY01008 and Avastin groups.There were no clinically meaningful differences in safety and immunogenicity across treatment groups.Conclusions:LY01008 demonstrated similarity to Avastin in terms of efficacy and safety in Chinese patients with advanced or recurrent non-squamous NSCLC.LY01008 combined with paclitaxel/carboplatin is expected to become a new treatment option for unresectable,metastatic,or recurrent non-squamous NSCLC patients in the first-line setting. | Yuankai Shi Kaijian Lei Yuming Jia Bingqiang Ni Zhiyong He Minghong Bi Xicheng Wang Jianhua Shi Ming Zhou Qian Sun Guolei Wang Dongji Chen Yongqian Shu Lianke Liu Zhongliang Guo Yong Liu Junquan Yang Ke Wang Ke Xiao LinWu Tienan Yi Debin Sun Mafei Kang Tianjiang Ma Yimin Mao Jinsheng Shi Tiegang Tang Yan Wang Puyuan Xing Dongqing Lv Wangjun Liao Zhiguo Luo Bin Wang Xiaohong Wu Xiaoli Zhu Shuhua Han Qisen Guo Rongyu Liu Zhiwei Lu Jianyong Zhang Jian Fang Changlu Hu Yinghua Ji Guolong Liu Hong Lu Dedong Wu Junhong Zhang Shuyang Zhu Zheng Liu Wensheng Qiu Feng Ye Yan Yu Yanqiu Zhao Qinhong Zheng Jun Chen Zhanyu Pan Yiping Zhang Wenjuan Lian Bo Jiang Bo Qiu Guojun Zhang Hua Zhang Yanju Chen Yuan Chen Hongbing Duan Manxiang Li Shengming Liu Lijun Ma Hongming Pan Xia Yuan Xueli Yuan Yulong Zheng Emei Gao Li Zhao Shumin Wang Can Wu | 2021 | Cancer Communications2021,41,9: | 5 |
| 5 | Sortilin promotes macrophage cholesterol accumulation and aortic atherosclerosis through lysosomal degradation of ATP-binding cassette transporter A1 protein显示文摘Sortilin is closely associated with hyperlipidemia and the risk of atherosclerosis(AS).The role of sortilin and the underlying mechanism in peripheral macrophage are not fully understood.In this study,we investigated the effect of macrophage sortilin on ATP-binding cassette transporter A1(ABCA1)expression,ABCA1-mediated cholesterol efflux,and aortic AS.Macrophage sortilin expression was upregulated by oxidized low-density lipoproteins(ox-LDLs)in both concentration-and time-dependent manners.Its expression reached the peak level when cells were incubated with 50μg/ml ox-LDL for 24 h.Overexpression of sortilin in macrophage reduced cholesterol efflux,leading to an increase in intracellular total cholesterol,free cholesterol,and cholesterol ester.Sortilin was found to bind with ABCA1 protein and suppress macrophage ABCA1 expression,resulting in a decrease in cholesterol efflux from macrophages.The inhibitory effect of sortilin in cholesterol efflux was partially reversed by treatment with chloroquine,a lysosomal inhibitor.On the contrary,the ABCA1 protein level and ABCA1-mediated cholesterol efflux is increased by sortilin short hairpin RNA transfection.The fecal and biliary cholesterol 3H-sterol from cholesterol-laden mouse peritoneal macrophage was reduced by sortilin overexpression through lentivirus vector(LV)-sortilin in low-density lipoprotein receptor knockout mice,which was prevented by co-treatment with chloroquine.Treatment with LV-sortilin reduced plasma high-density lipoprotein and increased plasma ox-LDL levels.Accordingly,aortic lipid deposition and plaque area were exacerbated,and ABCA1 expression was reduced in mice in response to infection with LV-sortilin alone.These effects of LV-sortilin were partially reversed by chloroquine.Sortilin enhances lysosomal degradation of ABCA1 protein and suppresses ABCA1-mediated cholesterol efflux from macrophages,leading to foam cell formation and AS development. | Yuncheng Lv Jing Yang Anbo Gao Sha Sun Xilong Zheng Xi Chen Wei Wan Chaoke Tang Wei Xie Suyun Li Dongming Guo Tianhong Peng Guojun Zhao Liyuan Zhong | 2019 | Acta Biochimica et Biophysica Sinica2019,51,5: | 4 |
| 6 | An Improved Bayesian-based RFID Indoor Location Algorithm显示文摘 | HUANG Yihua LUI Zongyuan LING Guojun LV Shilei | 2009 | Chinese Journal of Electronics2009,18,3: | 3 |
| 7 | Chemical Synthesis Residual Pyrolysis and Combustion: Kinetics and Evolved Gases Investigated by TG-FTIR显示文摘Chemical synthetic residual is one of the solid wastes generated from pharmaceutical industry.The pyrolysis and combustion characteristics of chemical synthesis residual were investigated using a thermogravimetric analyser coupled with Fourier transform infrared spectroscopy(TG-FTIR)in this study.The processes of pyrolysis and combustion can be divided into three stages.The average weight loss rate of pyrolysis process at low temperature was higher than that of combustion.The kinetic parameters of chemical synthesis residual during pyrolysis and combustion were calculated based on the TG results.Acetic acid and 4-aminophenol were the main evolved matter observed in the pyrolysis process.The emission characteristics of combustion at low temperature were similar to that of the pyrolysis,while CO2 was found as the major gaseous product at high temperature.A high temperature about 850°C is needed to make sure the complete combustion of chemical synthesis residual. | FANG Chunqi JIANG Xuguang LV Guojun YAN Jianhua LIN Xuliang SONG Huibo CAO Junjun | 2020 | Journal of Thermal Science2020,29,1: | 3 |
| 8 | Greenhouse gas emissions from oilfield-produced water in Shengli Oilfield,Eastern China显示文摘Greenhouse gas(GHG) emissions from oil and gas systems are an important component of the GHG emission inventory. To assess the carbon emissions from oilfield-produced water under atmospheric conditions correctly, in situ detection and simulation experiments were developed to study the natural release of GHG into the atmosphere in the Shengli Oilfield,the second largest oilfield in China. The results showed that methane(CH4) and carbon dioxide(CO2) were the primary gases released naturally from the oilfield-produced water.The atmospheric temperature and release time played important roles in determining the CH4 and CO2emissions under atmospheric conditions. Higher temperatures enhanced the carbon emissions. The emissions of both CH4 and CO2from oilfield-produced water were highest at 27°C and lowest at 3°C. The bulk of CH4 and CO2was released from the oilfield-produced water during the first release period, 0–2 hr, for each temperature, with a maximum average emission rate of 0.415 g CH4/(m3·hr) and 3.934 g CO2/(m3·hr), respectively. Then the carbon emissions at other time periods gradually decreased with the extension of time. The higher solubility of CO2 in water than CH4 results in a higher emission rate of CH4 than CO2over the same release duration. The simulation proved that oilfield-produced water is one of the potential emission sources that should be given great attention in oil and gas systems. | Shuang Yang Wei Yang Guojun Chen Xuan Fang Chengfu Lv Jiaai Zhong Lianhua Xue | 2016 | Journal of Environmental Sciences2016,28,8: | 2 |
| 9 | Serum amyloid A: A new potential serum marker correlated with the stageof breast cancer显示文摘 | Guojun Zhang Xudong Sun Hong Lv Xiaolin Yang Xixiong Kang | 2012 | Oncology Letters2012,,4: | 1 |
| 10 | Stabilization of heavy metals in municipal solid waste circulating fluidized bed incineration fly ash by fusion-hydrothermal method显示文摘Municipal solid waste circulating fluidized bed incineration(MSWCFBI)fly ash was a hazardous waste,maintaining chal-lenges for disposal.One effective approach was stabilizing the toxic heavy metal ions in the fly ash structures in situ.This work proposed a fusion-hydrothermal method,including fusion pretreatment in nitrogen atmosphere and microwave-assisted hydrothermal process,to treat three MSWCFBI fly ash samples.Specifically,leaching tests were performed to demonstrate the heavy metal stabilization.Through the treatment of the fusion-hydrothermal process,the concentrations of Cd,Cu,Zn,Pb,Ni,and Cr ions leaching from the fly ashes were obviously less than those of the raw fly ash and the sample only treated by hydrothermal process.Meanwhile,the heavy metal ions migrating from the fly ash to the hydrothermal residual liquid were reduced.Importantly,lots of zeolites formed during the fusion-hydrothermal process,such as to bermorite and sodalite.The fusion pretreatment significantly facilitated the conversion of quartz into amorphous silicon and silicate salts.Then,the silicon dissolution was accelerated and zeolite formation was promoted.Eventually,the heavy metal ions could be trapped in zeolite frameworks,enhancing the stabilization of heavy metal.Moreover,the cation-exchange capability values of the three treated fly ash were 1.099,1.168,and 1.188 meq g−1,two-folder larger than those of the samples only treated by hydrothermal process.In summary,the fusion-hydrothermal method could facilitate the stabilization of heavy metal ions in the fly ash and the as-obtained solid product with high content of zeolite was promising for future applications. | Qian Chen Guojun Lv Xuguang Jiang Xiaoli Zhao Litan Kong | 2019 | Waste Disposal and Sustainable Energy2019,1,4: | 1 |
| 11 | Directional design and synthesis of high-yield hollow Fe-MFI zeolite encapsulating ultra-small Fe_(2)O_(3) nanoparticles by using mother liquid显示文摘How to directionally design the hollow zeolite via a green route is of great significance. Here, we successfully synthesized the hollow Fe-silicate-1 encapsulated ultra-small Fe_(2)O_(3) nanoparticles (2.5 nm) with higher yield (85.2%) by mother liquid than traditional dissolution-recrystallization for the first time, which was achieved by precisely regulating the number and distribution of defects in zeolite and cleverly utilizing the TPAOH and nuclei in mother liquor. The effects of synthetic temperature, synthetic period and addition amount of parent zeolite on the formation of hollow zeolite have been investigated and the effect of synthetic conditions on the defects in parent zeolite has been also firstly quantified. The corresponding formation mechanism has been proposed. The abundant inner defects provided by the zeolite synthesized at 130 °C for 1 day and large amount of TPAOH remaining in mother liquid are conducive to the formation of hollow zeolite. Meanwhile, both parent zeolite and nuclei (4-, 5-member rings and structure units) in mother liquid obtained at 130 °C play the crucial roles in enhancing the zeolite yield. Notably, Fe_(2)O_(3) nanoparticles could decompose into small fragments by the interaction with nuclei in mother liquid. Partial ultra-small Fe_(2)O_(3) nanoparticles would be encapsulated in cavity and the rest could be inserted in the zeolite framework, which is significantly different from the conventional dissolution-recrystallization mechanism. The obtained encapsulated catalyst shows the superior catalytic performance and stability in phenol and tetracycline degradation reactions. | Yi Zhai Fumin Wang Xubin Zhang Guojun Lv Yuzhou Wu Tao Jiang Qing Zhang Mengyue Li Mengyao Li Yongkui Liu | 2021 | Nano Research2021,14,11: | 1 |
| 12 | Differential role of microenvironment in microencapsulation for improved cell tolerance to stress显示文摘 | Sun Zhijie Lv Guojun Li Shuangyue | 2007 | Applied Microbial and Cell Physiology2007,75,: | 1 |
| 13 | In Situ Growth of 3D Hierarchical ZnO@Ni_xCo_(1-x)(OH)_y Core/Shell Nanowire/Nanosheet Arrays on Ni Foam for High-Performance Aqueous Hybrid Supercapacitors显示文摘In this study, we designed and synthesized a novel battery-type electrode featuring three-dimensional(3D) hierarchical ZnO@Ni_xCo_(1-x)(OH)_y core/shell nanowire/nanosheet arrays arranged on Nifoam substrate via a two-step protocol including a wet chemical process followed by electro-deposition. We then characterized its composition, structure and surface morphology by X-ray diff raction, energy-dispersive X-ray spectrometry(EDS), X-ray photoelectron spectroscopy, scanning electron microscopy(SEM), transmission electron microscopy, EDS elemental mapping. Our electrochemical measurements show that the ZnO@Ni_(0.67)Co_(0.33)(OH)_y electrode material exhibited a noticeably high specific capacity of as much as 255(mA ·h)/g at 1 A/g. Additionally, it demonstrated a superior rate capability, as well as an excellent cycling stability with 81.6% capacity retention over 2000 cycles at 5 A/g. This sample delivered a high energy density of 64 W·h/kg and a power density of 250 W/kg at a current density of 1 A/g. With such remarkable electrochemical properties, we expect the 3D hierarchical hybrid electrode material presented in this work to have promising applications for the next generation of energy storage systems. | Fumin Wang Mengchao Liu Xubin Zhang Guojun Lv Mingshuai Sun | 2018 | Transactions of Tianjin University2018,24,3: | 1 |
| 14 | Probing the role of microenvironment for microencapsulated Sacchromyces cerevisiae under osmotic stress显示文摘 | Sun Zhijie Lv Guojun Li Shuangyue | 2007 | Applied Microbial and Cell Physiology2007,75,: | 1 |
| 15 | Metabolic response of different osmo-sensitive Sacchromyces cerevisiae to ACA microcapsule显示文摘 | Sun Zhijie Li Shuangyue Lv Guojun | 2008 | Enzyme and Microbial Technology2008,42,7: | 1 |
| 16 | Probing the role of microenvironment for microeneapsulated Sacchromyees cerevisiae under osmotic stress 显示文摘 | un Zhijie Lv Guojun Li Shuangyue | 2007 | J Biotechnol2007,128,1: | 1 |
| 17 | Temperature-responsive peristome-structured smart surface for the unidirectional controllable motion of large droplets显示文摘The manipulation of fast,unidirectional motion for large droplets shows important applications in the fields of fog collection and biochemical reactions.However,driving large droplets(>5μL)to move directionally and quickly remains challenging due to the nonnegligible volume force.Herein,we fabricated a scalable,bionic peristome substrate with a microcavity width of 180μm using a 3D printing method,which could unidirectionally drive a large water droplet(~8μL)at a speed reaching 12.5 mm/s by temperature-responsive wettability.The substrate surface was grafted with PNIPAAm,which could reversibly change its wettability in response to temperature,thereby enabling a temperature-responsive smart surface that could regulate droplet movement in real-time by changing the temperature.A series of temperature-responsive smart patterns were designed to induce water transport along specific paths to further realize controllable droplet motion with the antibacterial treatment of predesignated areas.The ability to achieve temperature-responsive unidirectional motion and dynamic control of droplet movement could allow programmable fluidic biosensors and precision medical devices. | Yunyun Song Jialei Yang Xu Zhang Zhongqiang Zhang Xinghao Hu Guanggui Cheng Yan Liu Guojun Lv Jianning Ding | 2023 | Microsystems & Nanoengineering2023,9,5: | 0 |
| 18 | Analysis of the Pyrolysis of Solid Recovered Fuel and Its Sorted Components by using TG-FTIR and DAEM显示文摘Currently,waste disposal has been highlighted strategically all over the world.Solid recovered fuel(SRF)with a high calorific value is manufactured from municipal solid waste(MSW).Thermogravimetric Fourier transform infrared spectroscopy(TG-FTIR)and distributed activation energy model(DAEM)were utilized to study the pyrolysis of the individual components and their mixture(i.e.SRF),which were obtained from a MSW incineration power plant.The best operating conditions were defined by comparing the effect of heating rates and flow rates of sweep gas.The gaseous products and functional groups in the pyrolysis of each component and their mixture were researched.Additionally,a direct search method was presented to obtain the DAEM kinetic parameters.DAEM equations for volatile products were given to describe pyrolysis of SRF.The model prediction results are consistent with the experimental results.The kinetic data will provide a basis for gas composition regulation from theoretical modeling. | WU Lei JIANG Xuguang LV Guojun LI Xiaodong YAN Jianhua | 2023 | Journal of Thermal Science2023,32,4: | 0 |
| 19 | Genome-Wide Association Analysis and Allelic Mining of Grain Shape-Related Traits in Rice显示文摘Excavating single nucleotide polymorphisms (SNPs) significantly associated with rice grain shape and predicting candidate genes through genome-wide association study (GWAS) can provide a theoretical basis for discovery and utilization of excellent genetic resources in rice. Based on 16 352 SNPs, 161 natural indica rice varieties with various grain sizes in southern China were used for GWAS of grain shape-related traits, referring to grain length (GL), grain width (GW), 1000-grain weight (TGW), and grain length/width (GLW). Phenotypic statistics showed that coefficient of variation values for these four traits GL, GW, TGW and GLW were 9.92%, 9.09%, 20.20% and 16.38%, respectively. Each trait showed a normal distribution, and there was a certain correlation between these traits. Through general linear model correlation analysis, a total of 38 significant loci were identified, and a range of 100 kb upstream and downstream of the significant loci was identified as the candidate interval. On chromosome 3, GS3 and qGL3 were found to regulate GL. On chromosome 6, TGW6 and GW6a were found to regulate TGW. Also, some QTLs related to grain shape were found on chromosomes 5 and 9. Besides that, using sequenced 3K-germplasm resources, we found that there are 22 overlapped varieties between these two natural populations. Twenty-six SNPs and fourteen haplotypes were identified in five regions of GS3 genes. The detection of multiple candidate genes/QTLs within the candidate interval is beneficial for further excavation of superior rice genetic resources. | LV Yang WANG Yueying Noushin JAHAN HU Haitao CHEN Ping SHANG Lianguang LIN Haiyan DONG Guojun HU Jiang GAO Zhenyu QIAN Qian ZHANG Yu GUO Longbiao | 2019 | Rice science2019,26,6: | 0 |
| 20 | Application of the Stress Evolutionary Model in Hebei Province,North China显示文摘Coulomb stress changes associated with strong earthquakes occurring since 1484 in Hebei Province,China are investigated. The North China block has had many large historical earthquakes and some damaging earthquakes in the past century,including the 1976 Tangshan earthquake (M =7.8) . The study area and the adjacent areas of the province comprise the most active seismic fault zones and suffer from both strong and frequent events. The North China Block,which includes the Ordos plateau and the North China plain,is part of the Archean Sino-Lorean craton and one of the most active seismic regions in the world. Its movement is accommodated on major strike-slip intraplate fault zones that strike in the E-W direction. The faults in the study area contribute to the complexity of the stress field. Seismic hazard assessment in this region is attempted by calculating the change of the Coulomb failure function ( ΔCFF) arising from both the coseismic slip of strong events (MS≥6.5) and the stress built up by continuous tectonic loading on major regional faults. At every step of the stress evolutionary model an examination of possible triggering of each next strong event is made and the model finally puts in evidence that the fault segments that are apt to fail in an impending strong event,thus providing future seismic hazard evaluation. In this paper,the results of ΔCFF for Zhangjiakou fault, Xiadian fault and Langfang fault have been shown as examples to express the possiblity of generating future seismic hazard. | Zhang He Karakostas V. G. Papadimitriou E. E. Lv Guojun Jin Xueshen | 2013 | Earthquake Research in China2013,27,2: | 0 |