Results 51 to 60 of about 4,014 (219)
Jianzhu Gangjiegou Jinzhan, 2022 为研究装配式偏心支撑钢框架在地震作用下的抗震性能与破坏机理，对两种1层单跨的剪切屈服型装配式偏心支撑钢框架进行了拟静力试验，分别从两种框架的斜撑构造以及可替换能力两方面研究装配式偏心支撑的抗震性能，观察钢框架在低周往复荷载作用下的破坏特征，结合试验结果深入分析此类结构的抗震性能指标。试验结果表明：斜撑构造对装配式偏心支撑钢框架的抗震性能有较大影响，斜撑与框架横梁间采用螺栓连接的钢框架REBF在承载能力、耗能能力、耗能梁段的转动能力等方面均优于上半部分斜撑与框架横梁间采用焊接连接的钢框架KEBF ...
叶重阳, 王新武, 时强, 孙海粟
doaj
MXene‐Based Electromagnetic Attenuation Materials in Microwave and Terahertz Bands
Rare Metals, EarlyView.ABSTRACT MXenes exhibit considerable potential for developing high‐performance electromagnetic (EM) shielding and absorption materials operating across microwave and terahertz frequencies, due to their tunable surface chemistry and exceptional charge carrier transport properties.
Guozheng Zhang +9 more
wiley +1 more source
Dynamic load response law and limit of pressure relief drilling for coal seam prevention and control of rock burst [PDF]
The surrounding rock of the impact hazard roadway is often disturbed by external dynamic loads, which often leads to the occurrence of impact ground pressure.
Haihong HE +5 more
core +1 more source
Giant Tunability of Individual Magnetic Skyrmion Size via an Oscillating Local Magnetic Field
Rare Metals, EarlyView.ABSTRACT Magnetic skyrmions hold great promise as memory and computing elements in future spintronic devices. Despite the demonstration of various devices, techniques for addressable and high‐precision manipulation of individual skyrmions remain scarce.
Cai‐Hong Xie +13 more
wiley +1 more source
Optimal Design of Control Devices of Three-dimensional Building Structure [PDF]
, 2009 目前，振动控制技术在土木工程中的运用正在蓬勃发展，许多新型控制体系和控制装置出现。振动控制技术在土木工程中运用，也产生了许多新的研究领域，控制器优化设计问题便其中之一。控制器优化设计一般包括两个方面：一是被动控制器相关参数的优化或主动控制器最优控制律的选取；二是控制器数目和安装位置优化。本文在以往研究的基础上，基于结构在频域内的响应，从能量的角度出发，对双向水平地震作用下三维结构控制体系的被动控制器的优化设计问题进行了研究，主要完成工作如下： （1）三维结构控制系统阻尼器优化设计 ...
曾轲
core
Rare Metals, EarlyView.ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen +13 more
wiley +1 more source
, 2021 以3个钢连梁试件为对象,采用2种不同的连接方式以及变换可更换段钢梁的截面高度,对可更换钢梁的抗震性能进行了试验研究。在抗震试验中,将钢梁分为3段,并削弱中间段,使破坏发生在中间段。考察试件的破坏形态、滞回曲线、骨架曲线、刚度退化、延性性能、耗能性能等指标。试验结果表明:试验中3个试件均发生了破坏,在连接方式相同的情况下,可更换段钢梁的截面高度对可更换钢梁的抗震性能有很大影响;在截面高度相同的情况下 ...
李园园, 李斌, 高春彦
core +1 more source
Rare Metals, EarlyView.ABSTRACT Converting CO2 to CH4 under mild conditions is a promising strategy for solving environmental and energy problems, but also a challenge. In this work, the low‐temperature CO2 hydrogenation process over Ni/CeO2 catalysts was significantly accelerated by optimizing the H2 dissociation ability of Ni through the size effect, thus A‐Ni/CeO2 with an
Yu Xie +8 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang +7 more
wiley +1 more source