Results 21 to 30 of about 154,102 (221)

依据地热井资料探讨北京八宝山断裂北段的基本特点

open access: yesDizhen xuebao, 2018
根据地热井的地层资料,绘制了横穿八宝山断裂带北段的地质剖面图,对八宝山断裂带的深部构造特点进行了探讨,并对几个地热钻孔的地层进行了横向对比。研究结果显示:剖面中存在众多倾角不同、规模不一且相互错断的逆断层,反映出八宝山断裂受逆冲作用非常强烈,同时具有多期性;剖面中存在两条较大的断层,一条是八宝山断裂带的主断层,另一条是雾迷山组小断块被顶托至上部后所形成的次断层,在八宝山一带,次断层的上盘被推覆至主断层线之上将其掩盖,地表仅显示一条断层,即平常所说的八宝山断层,由此可见这并非八宝山断裂带的主断层 ...
Yuanzhang Liu
doaj   +1 more source

2013年三台MS4.7地震震源机制及发震构造研究

open access: yesDizhen xuebao, 2021
2013年2月19日四川省绵阳市三台县发生MS4.7地震,震中位于四川盆地中部基底断裂绵阳—三台—大足断裂与蒲江—三台—巴中断裂的交会区域。基于地震目录、震相报告和波形等资料,对地震序列进行重定位,采用近远震联合波形反演求解主震震源机制,结合野外地质调查对该地震的发震构造进行分析。余震序列重定位的空间展布方向为NW-SE向,与节面Ⅰ走向吻合,认为此次地震发震断裂走向为NW−SE,倾向为NE,且破裂面近于直立,发震断层在近NS向的近水平挤压应力作用下作右旋走滑错动。实地调查中未见地表破裂及地表断层行迹 ...
Suihai Liu   +4 more
doaj   +1 more source

In Situ Transmission Electron Microscopy Study of Titanium–Steel Heterostructure: Real‐Time Analysis of Interfacial Fracture Evolution

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Titanium (Ti)–steel composite joints are prone to the formation of compounds such as TiC, TiFe, and TiFe2 during solid‐phase bonding. This phenomenon leads to premature failure and significantly reduces the bonding quality of the joints. However, the fracture behavior of the joint influenced by these compounds, particularly on the initiation ...
Sheng Zeng   +5 more
wiley   +1 more source

一起500 kV断路器弹簧机构储能轴断裂故障分析

open access: yesGaoya dianqi, 2021
针对一起500 kV断路器弹簧机构储能过程中储能轴断裂事故,对断裂部件进行了理化检验,明确了储能轴断裂并非该部件的质量原因。通过对断路器解体,分析断路器储能过程机构的工作原理,发现储能凸轮和顶杆啮合不足,导致合闸弹簧在无负载的情况下带动储能轴"反打",是造成储能轴断裂的原因。
焦宗寒, 郑欣, 杨迎春, 代克顺
doaj  

ABCA12 Frameshift Deletion in Domestic Cats With Ichthyosis Fetalis

open access: yesVeterinary Dermatology, Volume 37, Issue 3, Page 365-374, June 2026.
ABSTRACT Background Ichthyosis fetalis (IF), also known as harlequin ichthyosis, is a rare and often fatal autosomal recessive congenital skin disorder. It is characterized by thickened, hard skin plaques and deep skin fissures that limit mobility and cause malformations of the eyes, lips and ears.
Jeanna M. Blake   +2 more
wiley   +1 more source

基于GNSS的滇东南弧形构造带现今运动特征分析

open access: yesDizhen xuebao
以云南区域GNSS速度场为约束,采用克里金插值方法分时段估计了1999—2007年、2009—2014年和2015—2020年这三期的区域应变率场,获取了滇东南弧形构造带现今区域的形变演化特征;然后利用GNSS剖面方法计算了红河断裂带中南段、石屏—建水断裂带和曲江断裂的滑动速率;最后利用研究区域内现有的GNSS连续观测资料,构建了五组分别跨红河断裂带中段、红河断裂带南段、石屏—建水断裂、曲江断裂和小江断裂带中南段区域的地块,获取其应变时序,并基于此分析了相关断裂现今的运动特征 ...
Lingli Wang   +5 more
doaj   +1 more source

Complexion‐Mediated Dislocation Transfer Enables Exceptional Strength‐Toughness Synergy in Multicomponent‐Alloy Bonded Hardmetal

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT The inherent brittleness of hardmetals stems from the rigid covalent bond in the ceramic matrix and the sharp ceramic/metal interface, which restricts the nucleation and motion of dislocations. In this study, a novel strategy is proposed to activate significant dislocation behaviors in the WC matrix by employing a non‐equiatomic CoNiFeCr ...
Cheng Qian   +9 more
wiley   +1 more source

Regulating the Boron Content to Suppress Stress‐Relief Cracking in the Coarse‐Grained Heat‐Affected Zone of 7CrMoVTiB10.10 Heat‐Resistant Alloy

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT This study demonstrates a new strategy for modifying the boron content to address stress‐relief cracking (SRC) in the 7CrMoVTiB10.10 alloy. First, coarse‐grained heat‐affected zone (CGHAZ) specimens with different boron contents were prepared via simulated welding thermal cycles.
Dongdong Zhang   +3 more
wiley   +1 more source

High‐Cycle Fatigue Behavior and Deformation Mechanisms of Al0.5CoCrFeNi High‐Entropy Alloy by Laser Powder Bed Fusion

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Laser powder bed fusion (LPBF) can fabricate high‐entropy alloys (HEAs) with refined microstructure and enhanced mechanical properties. However, the deformation and fatigue mechanisms of Al‐containing HEAs produced by LPBF remain unclear. In this work, we systematically investigate the tensile properties, deformation mechanisms, and high‐cycle
Dan Zheng   +4 more
wiley   +1 more source

Dual‐Engineered Electrocatalyst: Work‐Function‐Driven Electronic Reconfiguration and Self‐Sacrifice Nanorod‐Templated Nanoflowers of Ni3S2/MoS2 Heterojunctions for High‐Performance Hydrogen Evolution

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Water electrolysis is a promising method for green hydrogen production, but slow hydrogen evolution reaction (HER) kinetics require efficient catalysts. In this study, we develop a Ni3S2/MoS2 heterostructure electrocatalyst using a work‐function‐driven electronic modulation strategy combined with a self‐sacrificial template approach.
Xinxin Zhao   +11 more
wiley   +1 more source

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