Results 61 to 70 of about 143,397 (106)
Dizhen xuebao, 2020 收集郯庐断裂带中南段59次地震的等震线数据，运用遗传算法，将郯庐断裂带中南段按照断裂带东侧和西侧分区，分别反演其地震烈度衰减参数，反演时使目标函数的一范数最小，同时对烈度衰减曲线的远场施加约束，通过自助抽样（Bootstrap）技术多次重复反演以对反演结果的稳定性进行评价，并将断裂带东侧和西侧的烈度衰减曲线分别与第五代地震动参数区划图进行对比。结果表明：使用本文提出的方法进行反演可使烈度衰减曲线即使不进行近、远场补点，也能收敛；断裂带东侧和西侧的结果均与第五代地震动参数区划图的结果存在差异 ...
Yicheng He +5 more
doaj +1 more source
Veterinary Dermatology, Volume 37, Issue 2, Page 200-210, April 2026.Background: Antimicrobial stewardship has become vital given the progressive emergence of multidrug‐resistant bacteria, and novel approaches to the treatment of bacterial infections are needed. Recently, reported synergistic effects of antibacterial drugs and bacteriophage therapy have revealed promising applications for the management of meticillin ...
Sarah Ehling +9 more
wiley +1 more source
, 1998 不论是材料的断裂强度还是结构的承载能力均存在着明显的“尺度效应”。该文旨在总结断裂力学中的相似方法、无量纲数及其断裂力学中有关的尺度率 ...
赵亚溥
core +1 more source
Zhejiang Daxue xuebao. Lixue ban为明确白云凹陷古近系断裂体系发育特征，深化“先存构造、拆离薄化、岩浆改造”三元耦合控制下的凹陷结构研究，运用深度域高精度三维地震资料，结合构造样式识别、断裂活动定量表征、平衡剖面演化等方法，在断裂级别划分、优势方位、有序活动、立体演化等方面开展了多维研究。研究表明：（1）白云凹陷发育控盆、控洼、控带与控圈4个级别断裂，存在北东东（NEE）向、近东西（EW）向与北西（NW）向3组优势方位；（2）白云凹陷构造特征西、中、东区差异明显，西区以高角度铲式控洼断裂为主，发育2期4组岩浆底侵；中区以中 ...
范彩伟(FAN Caiwei) +5 more
doaj +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Cost‐effective and efficient non‐noble‐metal catalysts for selective lignin hydrogenolysis remain elusive, representing a significant challenge in biorefinery. Here, we prepared a nitrogen‐doped carbon supported CoNi bimetallic catalyst, which was successfully derived from zeolitic imidazolate framework (ZIF) via high‐temperature pyrolysis ...
Xingwei Luo +3 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT With the rapid growth demand for advanced integrated electronic systems, lightweight flexible electromagnetic interference (EMI) shielding films integrated with functional properties, such as excellent mechanical properties and self‐healing capability, are a research focus in high‐tech functional materials. Herein, a sandwich‐structured aramid
Dan Guo +9 more
wiley +1 more source
, 1982 在这篇文章里,我们结合断裂问题回顾连续介质办学的发展,并指出,为了更深地理解和描述断裂现象,还需要进一步完善连续介质力学。 一、经典弹塑性理论应用于断裂时的局限性和Grifith的理论 现讨论一维应变条件下裂纹的扩展问题。我们假设 1.材料是均匀的,就是说,所讨论的材料是没有内部结构的; 2.材料是弹性的 ...
郑哲敏
core +1 more source
, 1996 采用表面裂纹法，利用自行研制的低温多试样拉伸装置，研究了一种航天铝合金材料的焊缝在低温下(20K)的断裂性能，并对断口进行了电镜显微分析，为提高焊接的质量提供了依据
夏源明 +4 more
core +1 more source
, 2002 用超声波断口图和扫描电镜(SEM)研究了聚甲基丙烯酸甲酯(PMMA)的失稳断裂与断口形态,发现了两个断裂临界速度。当裂纹速度达到第一临界值时,出现二次曲线记号;裂纹扩展速度超过第二临界速度时,断口表面留下二级微裂纹丛 ...
赵亚溥, 盛季生
core +1 more source