检索结果-南通市图书馆

A Physics‑Based Seismic Risk Assessment of the Qujiang Fault:From Dynamic Rupture to Disaster Estimation

International Journal of Disaster Risk Science 2024年第1期15卷 165-177页

作者： Yilong Li Zijia Wang Zhenguo Zhang yuhao gu Houyun Yu School of National Safety and Emergency Management Beijing Normal UniversityZhuhai 519087China Department of Earth and Space Sciences Southern University of Science and TechnologyShenzhen 518055China guangdong Provincial Key Laboratory of Geophysical High-Resolution Imaging Technology Southern University of Science and TechnologyShenzhen 518055China

This study achieved the construction of earthquake disaster scenarios based on physics-based methods-from fault dynamic rupture to seismic wave propagation-and then population and economic loss *** physics-based dynamic rupture and strong ground motion simulations can fully consider the three-dimensional complexity of physical parameters such as fault geometry,stress field,rock properties,and *** analysis of multiple seismic disaster scenarios along the Qujiang Fault in western Yunnan Province in southwestern China based on different nucleation locations was *** results indicate that the northwestern segment of the Qujiang Fault is expected to experience significantly higher levels of damage compared to the southeastern ***,there are significant variations in human losses,even though the economic losses are similar across different *** Bai Autonomous Prefecture,Chuxiong Yi Autonomous Prefecture,Yuxi City,Honghe Hani and Yi Autonomous Prefecture,and Wenshan Zhuang and Miao Autonomous Prefecture were identified as at medium to high seismic risks,with Yuxi and Honghe being particularly *** targeted earthquake prevention measures in Yuxi and Honghe will significantly mitigate the potential risks posed by the Qujiang ***,although the fault is within Yuxi,Honghe is likely to suffer the most severe *** findings emphasize the importance of considering rupture directivity and its influence on ground motion distribution when assessing seismic risk.

关键词： Earthquake disaster loss estimation Physics-based earthquake scenario simulation Qujiang Fault Rupture directivity Seismic risk assessment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

城市轨道交通刚性接触网工况改善线夹研制

引用

城市轨道交通研究 2024年第S01期27卷 22-26页

作者：顾宇昊上海地铁维护保障有限公司供电分公司上海200235

[目的]汇流排是城市轨道交通刚性接触网的重要组成部分,是保证城市轨道交通电力可靠传输的前提。在接触网日常运维中发现,存在汇流排接触线脱槽和中间接头下坠等异常工况。通过研制刚性接触网工况改善线夹以解决汇流排工况异常问题。[方... 详细信息

[目的]汇流排是城市轨道交通刚性接触网的重要组成部分,是保证城市轨道交通电力可靠传输的前提。在接触网日常运维中发现,存在汇流排接触线脱槽和中间接头下坠等异常工况。通过研制刚性接触网工况改善线夹以解决汇流排工况异常问题。[方法]分析了汇流排常见异常工况;介绍了刚性接触网工况改善线夹设计理念;通过Solidworks软件建立了刚性接触网工况改善线夹模型,分析了其性能,并通过样品现场安装测试验证了其应用的可行性。[结果及结论]刚性接触网工况改善线夹能够有效解决汇流排工况异常问题。该线夹设计结构完善,能够有效地为汇流排提供足够的夹紧力,能够维持汇流排的导高;采用可拆卸模块,可根据故障点需求灵活选择安装模块,且可循环使用;方便携带和使用,且可快速安装和拆卸。

关键词：城市轨道交通刚性接触网汇流排线夹

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于膨胀应力的锂离子电池剩余使用寿命预测

引用

电气工程学报 2024年第1期19卷 49-56页

作者：于淼朱昱豪顾鑫商云龙山东大学控制科学与工程学院济南250061

准确快速预测锂离子电池剩余使用寿命(Remaining useful life, RUL)对系统安全稳定运行至关重要。然而,电池内部退化机理复杂,外部运行工况多变,给RUL预测带来了极大挑战。为此,提出了一种基于电池膨胀应力的RUL预测方法。提取电池膨胀... 详细信息

准确快速预测锂离子电池剩余使用寿命(Remaining useful life, RUL)对系统安全稳定运行至关重要。然而,电池内部退化机理复杂,外部运行工况多变,给RUL预测带来了极大挑战。为此,提出了一种基于电池膨胀应力的RUL预测方法。提取电池膨胀应力信息,分别分析可逆膨胀和不可逆膨胀与容量之间的关系,并计算相关性。将可逆膨胀和不可逆膨胀作为特征参数,构建并训练长短期记忆(Long short-term memory, LSTM)神经网络,实现RUL精准快速预测。通过在UMBL公开数据集上验证,利用膨胀应力特征能更好地学习电池老化状态,捕捉电池容量下降趋势。结果表明,在不同循环起点和多种老化条件下,RMSE和MAE分别小于0.82%和0.70%,所提出的方法能够精准快速预测RUL,鲁棒性强。

关键词：锂离子电池剩余使用寿命电池膨胀 LSTM网络

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Predicting diamond-like Co-based chalcogenides as unconventional high temperature superconductors

引用

Science Bulletin 2018年第20期63卷 1338-1344页

作者： Jiangping Hu yuhao gu Congcong Le Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Kavli Institute of Theoretical Sciences University of Chinese Academy of SciencesBeijing 1O0190China Collaborative Innovation Center of Quantum Matter Beijing 100049China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsInstitute of Theoretical and Computational ChemistryCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

We predict Co-based chalcogenides with a diamond-like structure can host unconventional high temperature superconductivity(high-Tc). The essential electronic physics in these materials stems from the Co layers with each layer being formed by vertex-shared CoA_4(A=S, Se, Te) tetrahedra complexes, a material genome proposed recently by us to host potential unconventional high-Tcclose to a d7 filling configuration in 3 d transition metal compounds. We calculate the magnetic ground states of different transition metal compounds with this structure. It is found that(Mn, Fe, Co)-based compounds all have a G-type antiferromagnetic(AFM) insulating ground state while Ni-based compounds are paramagnetic *** AFM interaction is the largest in the Co-based compounds as the three t2 gorbitals all strongly participate in AFM superexchange interactions. The abrupt quenching of the magnetism from the Co to Ni-based compounds is very similar to those from Fe to Co-based pnictides in which a C-type AFM state appears in the Fe-based ones but vanishes in the Co-based ones. This behavior can be considered as an electronic signature of the high-Tcgene. Upon doping, as we predicted before, this family of Co-based compounds favor a strong d-wave pairing superconducting state.

关键词： Iron-based superconductors Cuprates Cobalt chalcogenides d-wave pairing symmetry

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Unconventional high temperature superconductivity in cubic zinc-blende transition metal compounds

引用

Science China(Physics,Mechanics & Astronomy) 2020年第7期63卷 104-108页

作者： Qiang Zhang Kun Jiang yuhao gu JiangPing Hu Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Department of Physics Boston CollegeChestnut HillMA 02467USA Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsInstitute of Theoretical and Computational ChemistryCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Kavli Institute of Theoretical Sciences University of Chinese Academy of SciencesBeijing 100190China

We consider possible high temperature superconductivity(high-Tc)in transition metal compounds with a cubic zinc-blende lattice *** the electron filling configuration in the d-shell is close to d7,all three t2g orbitals are near half filling with strong nearest neighbor antiferromagnetic(AFM)superexchange *** argue that upon doping,this electronic environment can be one of"genes"to host unconventional high Tcwith a time reversal symmetry broken d2x2-x2-y2±idx2-y2pairing *** gapless nodal points along the diagonal directions,this state is a direct three-dimensional analogue to the two-dimensional B1gd-wave state in *** suggest that such a case may be realized in electron doped CoN,such as CoN1-xOx and(H,Li)1-xCoN.

关键词： high temperature superconductivity zinc-blende structure three-dimensional d+id wave

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A possible family of Ni-based high temperature superconductors

引用

Science Bulletin 2018年第15期63卷 957-963页

作者： Congcong Le Jinfeng zeng yuhao gu guang-Han Cao Jiangping Hu Kavli Institute of Theoretical Sciences University of Chinese Academy of Sciences Beijing 100190 China Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications Institute of Theoretical and Computational Chemistry College of Chemistry and Molecular Engineering Peking University Beijing 100871 China Department of Physics Zhejiang University Hangzhou 310058 China Collahorative Innovation Center of Quantum Matter Beijing 100049 China

We suggest that a family of Ni-based compounds, which contain [Ni_2M_2O]~2à(M = chalcogen) layers with an antiperovskite structure constructed by mixed-anion Ni complexes, Ni M_4O_2, can be potential high temperature superconductors(high-Tc) upon doping or applying pressure. The layer structures have been formed in many other transitional metal compounds such as La_2B_2Se_2O_3(B = Mn, Fe, Co). For the Ni-based compounds, we predict that the parental compounds host collinear antiferromagnetic states similar to those in iron-based high temperature superconductors. The electronic physics near Fermi energy is controlled by two egd-orbitals with completely independent in-plane kinematics. We predict that the superconductivity in this family is characterized by strong competition between extended s-wave and d-wave pairing symmetries.

关键词： Iron-based superconductors Cuprates Nickel chalcogenides s(d)-wave pairing symmetry

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cobalt-Dimer Nitrides:A Potential Novel Family of High-Temperature Superconductors

引用

Chinese Physics Letters 2022年第9期39卷 67-71页

作者： yuhao gu Kun Jiang Xianxin Wu Jiangping Hu Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Kavli Institute of Theoretical Sciences University of Chinese Academy of SciencesBeijing 100190China

We predict that the square lattice layer formed by[Co_(2)N_(2)]_(2)-diamond-like units can host high-temperature *** layer appears in the stable ternary cobalt nitride,Ba Co_(2)N_(2).The electronic physics of the material stems from Co_(2)N_(2)layers where the dimerized Co pairs form a square *** low energy physics near Fermi energy can be described by an effective two-orbital *** considering interlayer couplings,the two orbitals are effectively *** electronic structure satisfies the“gene”character proposed for unconventional high-temperature *** predict that the leading superconducting pairing instability is driven from an extended s-wave(s^(±))to a d-wave by hole doping,e.g.,in Ba_(1-x) K_(x) Co_(2)N_(2).This study provides a new platform to establish the superconducting mechanism of unconventional high-temperature superconductivity.

关键词： superconductivity satis cobalt

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

BaCuS_(2): A Superconductor with Moderate Electron-Electron Correlation

引用

Chinese Physics Letters 2021年第1期38卷 116-120页

作者： yuhao gu Xianxin Wu Kun Jiang Jiangping Hu Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China CAS Center of Excellence in Topological Quantum Computation and Kavli Institute of Theoretical Sciences University of Chinese Academy of SciencesBeijing 100190China

We show that the layered-structure BaCuS_(2) is a moderately correlated electron system in which the electronic structure of the CuS layer bears a resemblance to those in both cuprates and iron-based *** calculations reveal that the in-plane d-p σ^(*)-bonding bands are isolated near the Fermi *** the energy separation between the d and p orbitals are much smaller than those in cuprates and iron-based superconductors,BaCuS_(2) is expected to be moderately *** suggest that this material is an ideal system to study the competitive/collaborative nature between two distinct superconducting pairing mechanisms,namely the conventional BCS electron-phonon interaction and the electron-electron correlation,which may be helpful to establish the elusive mechanism of unconventional high-temperature superconductivity.

关键词： Electron system bonding

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Spatial Variation Characteristics of Physical Conditions of College Students in Jiangsu Province

引用

Applied Mathematics 2017年第6期8卷 868-877页

作者： Bo Chen Dongjin Xian yuhao gu Changzhou University Sports Institute School of Physical Education of Changzhou University Changzhou China

As an important component of national talent resources, the physical conditions of college students appear to be particularly important. Based on geographic information system platform of ArcGIS, this paper builds database to make a statistical analysis on the physical conditions of college students in Jiangsu province in the years of 2012 to 2016, using the analysis function and graphics. The conclusions: 1) The students’ physique conditions in Jiangsu province is in an overall downward trend;2) There are differences between the male and female college students’ physical changes;3) In view of the college students’ physical deterioration degree of agglomeration, different areas should adopt effective measures to strengthen students’ physique.

关键词： Physical Health Physical Change Conditions Global Autocorrelation Coefficient

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Versatile oxidized variants derived from TMDs by various oxidation strategies and their applications

引用

Chinese Chemical Letters 2024年第6期35卷 14-25页

作者： gu Gong Mengzhu Li Ning Sun Ting Zhi yuhao He Junan Pan Yuntao Cai Longlu Wang College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&Telecommunications(NUPT)Nanjing 210023China

The physicochemical properties of transition metal dichalcogenides(TMDs)are highly related to their structures and usually stable in ***,under certain conditions they could be transformed into different structures due to *** this,various materials with fascinating structures have been explored by oxidation strategies,which possess novel properties and great potential in various applications such as solar batteries,hydrogen evolution reaction(HER)catalysts,and field effect transistors(FET).In this review,we systematically summarize the atomic structures of TMD oxidized variants and the corresponding fabrication *** various characterization methods,the chemical components of TMD oxidized variants are ***,we expound the promising applications of the oxidized *** review is expected to provide a new insight for preparing precise materials at the atomic level through corresponding oxidation strategies.

关键词： Transition metal dichalcogenides Oxidation strategies Oxidized variants Hydrogen evolution reaction Physicochemical properties

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：