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Relationship between seismic structures and the diverse rupture processes of the 2023 Türkiye earthquake doublet

Science China Earth Sciences 2024年第9期67卷 2810-2823页

作者： Zhi WANG yi FU Shunping pei CAS Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Recent geodetic and seismological observations of two major earthquakes in southeastern Türkiye in February 2023 have revealed complex rupture initiation,propagation,and segmentation along the East Anatolian Fault Zone(EAFZ)and surrounding ***,the role of upper crust structures along the EAFZ in determining the diverse rupture processes of this earthquake doublet remains *** further investigate this,we employed double-difference location and seismic tomography techniques to determine high-resolution seismic velocities(V_(P),V_(S))and Poisson’s ratio(σ)structures using a multiparameter joint tomographic *** dataset includes 100,833 high-quality source-receiver travel-time pairs of P-and *** find that the unique rupture processes of this earthquake doublet were primarily influenced by contrasting crustal seismic structures and localized geological *** M_(w)7.8 mainshock was initiated within a transitional edge zone characterized by a rigid part(asperity)of the seismogenic zone with sharp contrast variations in rock strength ranging from low to high along the *** comparison,the M_(w)7.6 rupture originated in a ductile belt featuring fluid saturation with low-VP,low-VS,and high-σvalues that extended parallel to the Cardak *** pronounced contrast structures observed along the former rupture can be attributed to the oblique collision system between the weakened section of the east Anatolian plateau and the brittle Arabian platform,while the latter rupture was initiated within the ductile structure associated with fluid intrusion caused by the northward subduction of the Cyprus slab and subsequent ***,the occurrence of the first earthquake(E1)serves to alleviate shear stress on the second earthquake(E2)fault,potentially impeding the initiation of an E2 *** the contrary,this event also significantly reduces the normal stress acting on the E2 fault due to a double left-lateral strike-slip system

关键词： 2023 Turkiye earthquake doublet Joint seismic tomography Tomographic transition edge Seismic rupture process Strong fault coupling

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Toxic effect of sodium perfluorononyloxy-benzenesulfonate on Pseudomonas stutzeri in aerobic denitrification,cell structure and gene expression

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Frontiers of Environmental Science & Engineering 2021年第5期15卷 247-256页

作者： yi qian Weichuan Qiao Yunhao Zhang Department of Environmental Engineering College of Biology and the EnvironmentNanjing Forestry UniversityNanjing210037China

The toxicities of sodium perfluorononyloxy-benzenesulfonate(OBS)to animals and plants are similar to those of perfluorooctane ***,the mechanism of its toxicity to aerobic denitrifying bacteria is still *** the present study,the ecotoxicity of OBS on an aerobic denitrifying strain,Pseudomonas stutzeri,was *** results showed that a dosage of OBS clearly affected the growth and aerobic denitrification of *** compared with an unamended control,the degradation efficiency of the total nitrogen decreased by 30.13%during exposure to 200 mg/L of OBS,and the complete degradation time of nitrate-nitrogen was delayed by 4 *** lactate dehydrogenase and superoxide dismutase produced by the bacteria increased with the concentration of OBS,and reactive oxygen species were also detected by confocal laser scanning microscope *** electron microscope imaging revealed chromosome deformation of the cells and damage to cell content;moreover,outer membrane vesicles were secreted from the bacteria,which was the important detoxification mechanism of *** to *** of the genes involved in aerobic nitrification and oxidative stress were also changed under OBS stress,which further confirmed the toxicity of OBS to P *** study reveals the environmental exposure risk of OBS from the perspective of microorganisms.

关键词： Sodium perfluorononyloxy-benzenesulfonate Aerobic denitrification Pseudomonas stutzeri Ecotoxicity ROS

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Corrosion mechanism of Zn-Al-Mg-coated steel in simulated polluted marine atmosphere

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Journal of Iron and Steel Research International 2024年第9期31卷 2294-2307页

作者： pei-dong Ning Li-yuan Xiao Jin Wang qian-qian Liu Kui Xiao Research Institute JISCO Hongxing Iron and Steel Co.Ltd.Jiayuguan735100GansuChina Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing100083China

The corrosion behaviour of zinc–aluminium–magnesium-coated steel in a simulated polluted marine atmospheric environment was ***,an indoor ageing acceleration test was carefully designed by simulating a polluted marine *** objective was to in-depth investigate the corrosion mechanism of Zn–Al–Mg-coated steel exposed to a simulated polluted marine *** experiments were carried out by scanning electron microscopy for micro-morphological characterization,X-ray diffraction,electrochemical impedance spectroscopy and electrodynamic polarization curves for the aged *** analysis of the results obtained after an indoor accelerated ageing test shows that Zn–Al–Mg coatings generate insoluble Zn_(5)Cl_(2)(OH)_(8)·H_(2)O and Zn_(4)SO_(4)(OH)_(6)during the corrosion process,which hinders the diffusion of corrosive substances into the substrate,and the insoluble substances are structurally dense and thus inhibit further ***,this effectively inhibits the occurrence of further corrosion,and thus,Zn–Al–Mg coating can significantly extend the service life of Zn–Al–Mg-coated steel.

关键词： Zn-Al-Mg-coated steel Electrochemical impedance spectroscopy Polarization curve Atmospheric corrosion Marine atmosphere

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Quantitative scenario construction of typical disasters driven by ontology data

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Journal of Safety Science and Resilience 2023年第2期4卷 159-166页

作者： Jing qian yi Liu Department of Engineering Physics Tsinghua UniversityBeijing 100084China

This study introduces a quantitative scenario-building method for analyzing emergency scenarios based on onto-logical methods and the Eoc(element-object-consequence)*** ontological structure of disasters concisely describes the knowledge,concepts,attributes,and relationships of the disaster *** reduces the granular-ity of the data from the document to the data *** ontologies comprise a set of basic knowledge of a given domain,which is reusable,relatively fixed,and applicable in different areas at different *** EOC model is based on the ontology of a disaster and adopts a multiclass structure for the development of a complete process scenario and the adaptation of a disaster scenario by combining objects,elements,environments,and consequences.

关键词： Semanticanalysis Disaster Scenarioconstruction EoCmodel Quantitative

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***2:An updated and enlarged R package that can generate very large phylogenies for vascular plants

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Plant Diversity 2022年第4期44卷 335-339页

作者： yi Jin Hong qian Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China Guizhou Normal UniversityGuiyang550025China Research and Collections Center Illinois State Museum1011 East Ash StreetSpringfieldIL62703USA

An earlier version of *** has been broadly used to generate phylogenetic trees of vascular plants for botanical,biogeographical and ecological ***,we update and enlarge this package,which is now called‘***2’.With ***2,one can generate a phylogenetic tree for vascular plants based on one of three different botanical nomenclature ***2 can generate phylogenies for very large species lists(the largest species list that we tested included 365,198 species).***2 generates phylogenies at a fast *** provide an example(including a sample species list and an R script to run it)in this paper to show how to use ***2 to generate phylogenetic trees.

关键词： Community phylogenetics Global plants Phylogeny Species list Vascular plants V.PhyloMaker

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POLISHING OF NON-FERROUS METALS WITH HIGH EFFICIENCY

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中国有色金属学会会刊：英文版 1998年第3期8卷 126-129页

作者： Chen, Yuquan Peng, Guangbin pei, yi Harbin Univ of Science & Technology Harbin China

１ＩＮＴＲＯＤＵＣＴＩＯＮＢｅｓｉｄｅｓｓｔｅｅｌｓ，ｎｏｎｆｅｒｏｕｓｍｅｔａｌｓｓｕｃｈａｓａｌｕｍｉｎｉｕｍ，ｃｏｐｐｅｒ，ｔｉｔａｎｉｕｍａｎｄｔｈｅｉｒａｌｏｙｓａｒｅｖｅｒｙｉｍｐｏｒｔａｎｔｍａｔｅ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＢｅｓｉｄｅｓｓｔｅｅｌｓ，ｎｏｎｆｅｒｏｕｓｍｅｔａｌｓｓｕｃｈａｓａｌｕｍｉｎｉｕｍ，ｃｏｐｐｅｒ，ｔｉｔａｎｉｕｍａｎｄｔｈｅｉｒａｌｏｙｓａｒｅｖｅｒｙｉｍｐｏｒｔａｎｔｍａｔｅｒｉａｌｓ，ｄｕｅｔｏｔｈｅｉｒａ...

关键词： non ferrous metals electrolysis polishing abrasive magnetic field

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Sustainable Management of Water Resources

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Engineering 2016年第1期2卷 23-25页

作者： yi qian School of Environment Tsinghua University Beijing 100084 China

Water is a very valuable resource, sustaining human life, pro- duction processes, and ecosystems; thus, particular attention should be paid to the management of water resources. China is now facing a serious water crisis, including water shortages, flooding, and water pollution, due to both natural and artificial causes. This water crisis has threatened human health and eco- nomic development.

关键词：水资源短缺可持续管理生态系统生产过程人为原因经济发展水危机水污染

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Field measurements for calibration of simplified models of the stiffening effect of infill masonry walls in high-rise RC framed and shear-wall buildings

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Earthquake Engineering and Engineering Vibration 2020年第1期19卷 87-104页

作者： Zhou Yun pei yilin Zhou yi Hyeon-Jong Hwang yi Weijian College of Civil Engineering Hunan UniversityChangsha 410082China Hunan Provincial Key Lab on Damage Diagnosis for Engineering Structures Hunan UniversityChangsha 410082China Key Laboratory for Green&Advanced Civil Engineering Materials and Application Technology of Hunan Province Hunan UniversityChangsha 410082China

As a type of nonstructural component, infill walls play a significant role in the seismic behavior of high-rise buildings. However, the stiffness of the infill wall is generally either ignored or considered by simplified empirical criteria that lead to a period shortening. The difference can be greatly decreased by using a structural identification methodology. In this study, an ambient vibration test was performed on four on-site reinforced concrete high-rise buildings, and the design results were compared with the PKPM models using corresponding finite element(FE) models. A diagonal strut model was used to simulate the behavior of the infill wall, and the identified modal parameters measured from the on-site test were employed to calibrate the parameters of the diagonal strut in the FE models. The SAP2000 models with calibrated elastic modulus were used to evaluate the seismic response in the elastic state. Based on the load-displacement relationship of the infill wall, nonlinear dynamic analysis models were built in PERFORM-3 D and calibrated using the measured modal periods. The analysis results revealed that the structural performance under small/large earthquake records were both strengthened by infill walls, and the contribution of infill walls should be considered for better accuracy in the design process.

关键词： high-rise building ambient vibration test model calibration infi ll wall seismic performance nonlinear dynamic analysis

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Transport of Propylene Carbonate-LiTFSI Electrolytes in P(VDF-HFP)Using Time-resolved ATR-FTIR Spectroscopy:Diffusion Coefficients and Molecular Interactions

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Chinese Journal of Polymer Science 2021年第8期39卷 975-983,I0005页

作者： Hui-Xian Li Lei Hou pei-yi Wu National Engineering Research Center for Dyeing and Finishing of Textiles College of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China

The time-resolved attenuated total reflectance-Fourier transform infrared(ATR-FTIR)spectroscopy is employed to investigate the transport mechanism of gel electrolytes by monitoring the diffusion behavior of propylene carbonate-lithium bis(trifluoromethylsulfonyl)imide(PC-LiTFSI)solution through poly(vinylidene fluoride-co-hexafluoropropylene)(P(VDF-HFP))*** behavior has been observed for both TFSr and *** temperature leads to faster diffusion of TFSI'and PC,which could be related to the increased free volume in P(VDF-HFP)matrix and rapid molecular movements upon *** molecular interactions among LiTFSI,PC and P(VDF-HFP)have been *** the diffusion process,PC molecules,in the form of small clusters,can firstly diffuse through the P(VDF-HFP)film and interact with P(VDF-HFP)by dipole-dipole interaction,acting as the ***,Li+diffuses into P(VDF-HFP)with the help of ion-dipole interactions between Li+and C=0 of ***,TFSI-diffuses through the polymer matrix in solvation *** addition,slight ion-dipole interactions between Li+and P(VDF-HFP)have been observed as *** in this work contribute to a better understanding of transport process in gel polymer electrolytes for lithium-ion batteries and support the development of improved gel polymer electrolytes by rationally regulating molecular interactions.

关键词： ATR-FTIR spectroscopy Gel polymer electrolyte Transport mechanism Molecular interaction Diffusion coefficient

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Disparity estimation for multi-scale multi-sensor fusion

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Journal of Systems Engineering and Electronics 2024年第2期35卷 259-274页

作者： SUN Guoliang pei Shanshan LONG qian ZHENG Sifa YANG Rui Suzhou Automotive Research Institute Tsinghua UniversitySuzhou 215000China Beijing Smarter Eye Technology Co. Ltd.Beijing 100023China College of Artifical Intelligence Tianjin University of Science and TechnologyTianjin 300457China State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China Department of Precision Instrument Tsinghua UniversityBeijing 100084China

The perception module of advanced driver assistance systems plays a vital *** schemes often use a single sensor for data processing and environmental perception or adopt the information processing results of various sensors for the fusion of the detection *** paper proposes a multi-scale and multi-sensor data fusion strategy in the front end of perception and accomplishes a multi-sensor function disparity map generation scheme.A binocular stereo vision sensor composed of two cameras and a light deterction and ranging(LiDAR)sensor is used to jointly perceive the environment,and a multi-scale fusion scheme is employed to improve the accuracy of the disparity *** solution not only has the advantages of dense perception of binocular stereo vision sensors but also considers the perception accuracy of LiDAR *** demonstrate that the multi-scale multi-sensor scheme proposed in this paper significantly improves disparity map estimation.

关键词： stereo vision light deterction and ranging(LiDAR) multi-sensor fusion multi-scale fusion disparity map

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