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The formation and evolution of the Qiaojia pull-apart basin,North Xiaojiang Fault Zone,Southwest China

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Journal of Mountain Science 2016年第6期13卷 1096-1106页

作者： li tian-tao PEI Xiang-jun HUANG Run-qiu JIN Long-de State key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 61oo59China Georgia Institute of Technology Atlanta 30332GeorgiaUSA

Sedimentary sequences with drastic thickening over short distances have been observed in Qiaojia County,Yunnan Province,Southwest *** are related to a pull-apart basin controlled by the Xiaojiang strike-slip *** field investigations include determining the surface characteristics of the Qiaojia basin which consists of three terrace sequences and a series of alluvial *** drill holes were used to reveal the internal structure of the *** results suggest that the basinal sediments are over 300 m *** bottom to top,they can be classified into five different *** inferred that the units of lacustrine sediments are deposited in a paleolake which was formed by a *** mass spectrometry radiocarbon dating(AMS ^(14)C dating) was used to estimate the ages of the terrace and lacustrine *** use the results to infer that the paleo-lake has existed about 15,000 years and that the Qiaojia basin was uplifted at an average rate of 3.3 mm/***,we then model the evolution process of the basin and interpreted 6 phases of development.

关键词： Pull-apart basin Xiaojiang fault Strike-slip Evolution Terrace Dammed lake

Formation and reactivation mechanisms of large-scale ancient landslides in the Longwu River basin in the northeast Tibetan Plateau, China

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Journal of Mountain Science 2022年第6期19卷 1558-1575页

作者： tian Jing-jing li tian-tao PEI Xiang-jun DING Feng SUN Hao XIE Xian-gang GUO Jian State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China College of Earth Sciences Chengdu University of TechnologyChengdu 610059China School of Earth System Science Tianjin UniversityTianjin 300072China Department of Civil Engineering Panzhihua UniversityPanzhihua 617000China

The northeastern Tibetan Plateau exhibits steep topography and strong internal or external dynamic geological effect and is frequently subjected to strong earthquakes and heavy rainfall. The geological evolution has resulted in a wide distribution of ancient landslides, which has become a hotspot for studying ancient landslide formation and reactivation. In recent decades, several ancient landslides on both banks of the Longwu River, Qinghai Province, China were reactivated, causing serious economic losses and casualties. This study conducted remote sensing interpretation and ground surveys on these ancient landslides. Totally 59 ancient landslides were identified, and the formation mechanism, evolution process, and resurrection mechanism of the Longwu Xishan No.2 ancient landslide were analyzed by means of a detailed field geological survey, drilling, and series of experimental tests such as the particle size distribution test, the Xray diffraction test and the mechanical properties test. The results show that the formation of these ancient landslides is closely associated with the uplift of the Tibetan Plateau and the erosion of the Longwu River. Firstly, the intermittent uplift of the Tibetan Plateau lead to the diversion and downcutting of the Longwu River basin, which forms the alternate slope topography with steep and slow slopes, thereby providing favourable topography and slope structure conditions for the formation of landslides. Secondly, 34.5% clay-mineral content in the Neoproterozoic mudstone with 32.7% particle size less than 0.005 mm, and the corrosion and softening effects of the Neogene mudstone with high clay mineral content under the erosion of water provides favourable material conditions for the formation of landslides. Thirdly, rainfall and human activities are the primary triggering factors for the revival of this ancient landslide group. It is revealed that the evolution process of the ancient landslides on both banks of the Longwu River can

关键词： Remote sensing interpretation Tectonic movement Ancient landslide Reactivation mechanism Formation process Tibetan Plateau

On the initiation,movement and deposition of a large landslide in Maoxian County,China

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Journal of Mountain Science 2018年第6期15卷 1319-1330页

作者： pei xiang-jun guo bin cui sheng-hua wang dong-po xu qiang li tian-tao State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

At 5 am 24 th June 2017, a catastrophic landslide hit Xinmo Village, Maoxian County, Sichuan Province, China. The slide mass rushed down from an altitude of 3400 m and traveled 2700 m in a high velocity. The 13 million m^3 deposition buried the whole village and caused about 100 deaths. The source area of the landslide is located in a high steep slope, average slope angle is 40o and maximal angle is 65o. The strata are interbedded Triassic Zagunao Formation metamorphic sandstone and slate with the dip slope angle of 45°. Based on high-resolution satellite remote sensing image, UAV image, DEM data, and field investigation, failure mechanism, travel features, and deposit characteristics were analyzed. The results showed that this landslide was influenced by Songpinggou Fault zone. According to the topography before the failure, the landslide is located in the back scarp of an antecedent landslide induced by Diexi Earthquake in 1933. The bedding slope provided potential rupture surface. Historical seismic activities and long-term gravitational deformation caused rock mass accumulated damages. Weathering and precipitation weakened the rock mass and finally induced shearing and tension failure. A huge block detached from the top rock slope, pushed the past landslide deposits in the middle part, rushed out of the slope bottom in a high velocity and buried the Xinmo Village. The rapid movement entrained and brought the soil into the Songping Gully which recoiled with and bounced back from the opposite mountain.

关键词： Xinmo landslide Seismic damages Longrunout Failure mechanism Rock fragment

Effect of lamellarization on the microstructure and mechanical properties of marine 10Ni5CrMoV steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 402-413页

作者： tao Zou Yanwu Dong Zhouhua Jiang Shuyang Du Yushuo li School of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China Key Laboratory for Ecological Metallurgy of Multimetallic Ores(Ministry of Education) Northeastern UniversityShenyang 110819China

Multistage heat treatment involving quenching(Q),lamellarizing(L),and tempering(T)is applied to marine 10Ni5CrMoV *** microstructure and mechanical properties were studied by multiscale characterizations,and the kinetics of reverse austenite transformation,strain hardening behavior,and toughening mechanism were further *** lamellarized specimens possess low yield strength but high toughness,especially cryogenic *** leads to the development of film-like reversed austenite at the martensite block and lath boundaries,refining the martensite structure and lowering the equivalent grain *** analysis of austenite reversion based on the JMAK model shows that the isothermal transformation is dominated by the growth of reversed austenite,and the maximum transformation of reversed austenite is reached at the peak temperature(750℃).The strain hardening behavior based on the modified Crussard-Jaoul analysis indicates that the reversed austenite obtained from lamellarization reduces the proportion of martensite,significantly hindering crack propagation via martensitic transformation during the *** a consequence,the QLT specimens exhibit high machinability and low yield *** with the QT specimen,the ductile-brittle transition temperature of the QLT specimens decreases from-116 to-130℃due to the low equivalent grain size and reversed austenite,which increases the cleavage force required for crack propagation and absorbs the energy of external load,*** work provides an idea to improve the cryogenic toughness of marine 10Ni5CrMoV steel and lays a theoretical foundation for its industrial application and comprehensive performance improvement.

关键词： 10Ni5CrMoV steel lamellarizing reversed austenite cryogenic toughness ductile-brittle transition temperature

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松木屑水热提质过程及其燃烧特性

过程工程学报 2016年第5期16卷 819-826页

作者：李田赵培涛祝飞中国矿业大学电力工程学院江苏徐州221116 国家煤加工与洁净化工程技术研究中心江苏徐州221116

以松木屑为原料,采用高压反应釜,在高压、液固质量比12：1、搅拌转速150 r/min、反应时间1 h的条件下,在220-260℃温度范围内进行水热提质实验,对产物进行分析,研究温度对燃料特性、燃料性能及动力学特性的影响.结果表明,松木屑的碳含... 详细信息

以松木屑为原料,采用高压反应釜,在高压、液固质量比12：1、搅拌转速150 r/min、反应时间1 h的条件下,在220-260℃温度范围内进行水热提质实验,对产物进行分析,研究温度对燃料特性、燃料性能及动力学特性的影响.结果表明,松木屑的碳含量和热值随水热提质温度升高逐渐增大,260℃时含碳量由48.10%增加到69.05%,热值由19.12 MJ/kg增加到26.66 MJ/kg.松木屑的热值增长趋势与其它生物质相同,但增长幅度异于其它生物质.水热提质过程中,木屑各组分发生脱羧、脱水、聚合、芳香化等反应,大分子物质分解成小分子物质如气体和有机酸等.水热提质有助于改善着火性能,随水热温度提高,最大燃烧速率对应的温度降低,燃烧时间延长.原木屑的燃烧反应为二级反应,水热提质后燃烧反应为一级反应,且活化能显著降低,为33.68 k J/mol.水热提质可显著提高木屑的能量密度,改善其燃烧性能.

关键词：生物质水热提质燃料特性热重分析活化能

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火灾事故调查工作标准化体系的研究

中国标准化 2023年第2期 53-55页

作者：田立涛北京市丰台区消防救援支队

通过近几年来我国火灾事故调查工作实际情况来看,火灾事故调查的标准化发展较为缓慢,各个标准的制定及管理,呈现出粗疏、零散的状态,且鉴定方式缺少有效的技术作为依据,火灾事故调查工作、信息服务没有规范性文件作为指导。因此,本文提... 详细信息

通过近几年来我国火灾事故调查工作实际情况来看,火灾事故调查的标准化发展较为缓慢,各个标准的制定及管理,呈现出粗疏、零散的状态,且鉴定方式缺少有效的技术作为依据,火灾事故调查工作、信息服务没有规范性文件作为指导。因此,本文提出消防部门应当构建出一套完善的火灾事故调查标准化体系,使相关人员明确意识到标准化对于火灾事故调查的真正作用,有益于推动火灾事故调查工作人员快速、正确地判定火灾形成原因,让火灾调查工作在标准化体系指导下,得到有序开展。

关键词：火灾事故调查标准化体系研究

同方期刊数据库博看期刊评论

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化工企业火灾事故调查与关键技术研究

化工管理 2022年第29期 74-76页

作者：田立涛北京市丰台区消防救援支队北京100070

在各种火灾事故中,化工企业火灾引发的后果破坏性最强,而且极易引发化工产品泄漏造成爆炸,不但会产生巨大的社会影响,也给火灾事故调查工作增加了难度。鉴于此,文章概述了火灾事故调查,针对化工火灾事故调查的特点,探究化工企业火灾事... 详细信息

在各种火灾事故中,化工企业火灾引发的后果破坏性最强,而且极易引发化工产品泄漏造成爆炸,不但会产生巨大的社会影响,也给火灾事故调查工作增加了难度。鉴于此,文章概述了火灾事故调查,针对化工火灾事故调查的特点,探究化工企业火灾事故调查的关键技术。

关键词：化工企业火灾事故关键技术

Ultra‑High Sensitivity Anisotropic Piezoelectric Sensors for Structural Health Monitoring and Robotic Perception

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Nano-Micro Letters 2025年第2期17卷 432-446页

作者： Hao Yin Yanting li Zhiying tian Qichao li Chenhui Jiang Enfu liang Yiping Guo State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Beijing Vacuum Electronics Research Institute Beijing 100015People’s Republic of China Fundamental Science On Vibration Shock and Noise LaboratoryState Key Laboratory of Mechanical System and VibrationSchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Monitoring minuscule mechanical signals,both in magnitude and direction,is imperative in many application scenarios,e.g.,structural health monitoring and robotic sensing ***,the piezoelectric sensor struggles to satisfy the requirements for directional recognition due to the limited piezoelectric coefficient matrix,and achieving sensitivity for detecting micrometer-scale deformations is also ***,we develop a vector sensor composed of lead zirconate titanate-electronic grade glass fiber composite filaments with oriented arrangement,capable of detecting minute anisotropic *** as-prepared vector sensor can identify the deformation directions even when subjected to an unprecedented nominal strain of 0.06%,thereby enabling its utility in accurately discerning the 5μm-height wrinkles in thin films and in monitoring human pulse *** ultra-high sensitivity is attributed to the formation of porous ferroelectret and the efficient load transfer efficiency of continuous lead zirconate titanate ***,when integrated with machine learning techniques,the sensor’s capability to recognize multi-signals enables it to differentiate between 10 types of fine textures with 100%*** structural design in piezoelectric devices enables a more comprehensive perception of mechanical stimuli,offering a novel perspective for enhancing recognition accuracy.

关键词： Flexible piezoelectric filaments Anisotropic Ultra-high sensitivity Structural health detection Texture recognition

Transforming growth factor-beta 1 enhances discharge activity of cortical neurons

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Neural Regeneration Research 2025年第2期20卷 548-556页

作者： Zhihui Ren tian li Xueer liu Zelin Zhang Xiaoxuan Chen Weiqiang Chen Kangsheng li Jiangtao Sheng Department of Microbiology and Immunology Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular ImmunopathologyShantou University Medical CollegeShantouGuangdong ProvinceChina Department of Neurosurgery First Affiliated Hospital of Shantou University Medical CollegeShantouGuangdong ProvinceChina

Transforming growth factor-beta 1(TGF-β1)has been extensively studied for its pleiotropic effects on central nervous system *** neuroprotective or neurotoxic effects of TGF-β1 in specific brain areas may depend on the pathological process and cell types ***-gated sodium channels(VGSCs)are essential ion channels for the generation of action potentials in neurons,and are involved in various neuroexcitation-related ***,the effects of TGF-β1 on the functional properties of VGSCs and firing properties in cortical neurons remain *** this study,we investigated the effects of TGF-β1 on VGSC function and firing properties in primary cortical neurons from *** found that TGF-β1 increased VGSC current density in a dose-and time-dependent manner,which was attributable to the upregulation of Nav1.3 *** VGSC current density and Nav1.3 expression were significantly abolished by preincubation with inhibitors of mitogen-activated protein kinase kinase(PD98059),p38 mitogen-activated protein kinase(SB203580),and Jun NH2-terminal kinase 1/2 inhibitor(SP600125).Interestingly,TGF-β1 significantly increased the firing threshold of action potentials but did not change their firing rate in cortical *** findings suggest that TGF-β1 can increase Nav1.3 expression through activation of the ERK1/2-JNK-MAPK pathway,which leads to a decrease in the firing threshold of action potentials in cortical neurons under pathological ***,this contributes to the occurrence and progression of neuroexcitatory-related diseases of the central nervous system.

关键词： central nervous system cortical neurons ERK firing properties JNK Nav1.3 p38 transforming growth factor-beta 1 traumatic brain injury voltage-gated sodium currents