Results 31 to 40 of about 48,736 (135)
ABSTRACT In recent years, the field of magnetic materials has witnessed a paradigm shift from single‐function applications to multifunctional integration, driven by the growing demand for smart materials in advanced technologies. Among various magnetic systems, La(Fe, Si/Al)13‐series materials have emerged as particularly promising candidates due to ...
Irfan Liaquat +2 more
wiley +1 more source
本发明公开了一种单裂隙非饱和渗流试验系统,包括:常水头供水系统、两块条石、两个垫片、支架和数据采集系统,常水头供水系统用于提供实验用水并保证入水口压力恒定;两块条石叠放在一起,其相对的两个面上粘贴有均匀的沙粒;垫片为细长形状,位于两块条石之间长边的两侧;支架用于固定条石;数据采集系统包括相连的水流位置检测电路和工控机,水流位置检测电路在石缝中设置有多个监测点,工控机监测水流流到各个监测点的时刻,实现石缝内水流位置监测。本发明可通过改变常水头供水系统的水头高度,裂缝厚度、裂隙表面粗糙度等 ...
赵颖 +7 more
core +2 more sources
采用块体动力学分析系统(Block Dyna)中的渗流模块,对裂隙岩体中的压水灌浆规律进行了数值模拟。采用达西渗流模型描述压水过程,采用宾汉渗流模型描述灌浆过程,分别探讨了裂隙数量、裂隙开度对压水吕荣值及灌浆注入量的影响规律。计算结果表明,随着裂隙数量、裂隙开度的增大,吕荣值及浆液注入量均呈现逐渐增大的趋势。裂隙开度对压水吕荣值的影响是二次方关系,裂隙条数是一次方关系,裂隙开度对压水吕荣值的改变更为敏感。由于裂隙随机性及浆液进入截止开度等因素的影响 ...
朱心广 +6 more
core +2 more sources
为了深入分析2022年1月8日青海门源MS6.9地震引发的不同类型地表破裂特征及震害现象,本文依据沿此次地震地表破裂带进行的野外实地考察和无人机航拍解译,将破裂带沿线的典型同震地表破裂特征归纳为:① 多种典型几何细结构,包括雁列状次级破裂、左旋左阶拉张区、左旋右阶挤压区以及树枝状、网状破裂等;② 多种地貌标志物水平位错,包括牧区围栏、车辙印、动物脚印和冲沟冰面的左旋断错等;③ 多种类型垂直破裂,如逆冲型地震陡坎和正断型地震陡坎;④ 多种类型挤压破裂,如挤压脊和挤压鼓包;⑤ 不同类型张性裂缝带 ...
Ruihuan Su +5 more
doaj +1 more source
On the Damage Tolerance of Diffusion Bonded Titanium–Aluminum Phase Biomimetic Composites
ABSTRACT The biomimetic design principles of natural structures involve the strategic integration of stiff and compliant phases to synergistically enhance strength and toughness. Its evolutionary refined natural armor, characterized by a specialized microarchitecture, enables superior damage tolerance.
Shuai Tong +10 more
wiley +1 more source
Coordination of cortex modifications in time, space, and under stress
Summary In roots, cell‐type‐specific differentiation enables specialized responses to environmental stress. The cortex, located between the vasculature and epidermis, is a key site for stress‐responsive modifications. The distinct specializations of the cortex are controlled by developmental, positional and environmental signals.
Dorota Kawa +2 more
wiley +1 more source
Summary Formation of an aqueous continuum from the leaf surface to the sub‐stomatal cavity is a key process, affecting the foliar entry of solutes, particles, and pathogens. However, the factors controlling the transition from a water droplet to the formation of a continuous water film remain poorly understood.
Max Frank +8 more
wiley +1 more source
本文在对不同温度热处理的花岗岩试件的裂隙微观特征及宏观力学性质的考察之后,建立了抗拉强度与微裂隙密度的关系。在理论模型要求的范围内,理论与实验结果吻合较好。 该工作对设计储藏核废料,化学废料 ...
寇绍全, O.Alm
core +2 more sources
Summary Many plants reproduce asexually by generating clonal progeny from vegetative tissues, a process known as vegetative reproduction. This reproduction mode contrasts with sexual reproduction, which enhances genetic diversity. The bryophyte Marchantia polymorpha L.
Yuuki Sakai +6 more
wiley +1 more source
Parasitic plants that deprive crops of water and nutrients are an increasingly concerning food security issue, affecting the livelihood of millions of subsistence, small‐ and mid‐scale farmers. An in‐depth understanding of parasite–host interactions is required to develop species‐specific and ecologically sustainable parasite management methods.
Hildah K. Kithinji +4 more
wiley +1 more source

