Results 21 to 30 of about 1,210,917 (141)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Interface polarization enhancement and impedance matching optimization are the keys to improving the comprehensive performance of microwave absorbing materials (MAMs). Herein, a green synthesis strategy integrating sacrificial template self‐etching, hydrothermal reaction, and annealing treatment is proposed to successfully fabricate urchin ...
Zhenzhen Tian +8 more
wiley +1 more source
Functional Ecology, Volume 40, Issue 5, Page 1415-1427, May 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Wildfires are disrupting and regenerating forces in nature that affect all ecosystem components. However, the impact of wildfires on soil multitrophic biodiversity and the resulting consequences for ecosystem multifunctionality (EMF) remain poorly understood.
Juan Zhou +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT MCrAlX coatings are widely used as bond coats in thermal barrier coating systems to protect turbine blades from high‐temperature oxidation. However, their oxidation resistance is often restricted by uncontrolled microstructures, surface roughness, and aggregation of reactive elements (REs). In this study, high‐repetition‐rate femtosecond laser
Wei Qian +7 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2021 钢材高温蠕变是钢材在高温和应力作用下的塑性应变。高温蠕变会导致钢柱变形增大,耐火极限降低。为了考察高温蠕变对冷弯薄壁型钢柱抗火性能的影响程度,建立了考虑高温蠕变的抗火分析有限元模型,通过试验结果对有限元模型进行验证。利用模型研究了在不同荷载比、轴向约束刚度比、升温速率和火灾场景下,高温蠕变对冷弯薄壁型钢柱抗火性能的影响。研究表明,在有限元模型中考虑蠕变因素后,对于钢柱抗火性能的预测更为准确,更符合真实情况;在中等升温速率的火灾场景中,荷载比为0 ...
杨竞杰, 王卫永
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT NiFe‐based MIL‐55 metal‐organic frameworks (MOFs) face challenges in achieving atomically precise composition and reliable methods for uniform growth. This study addresses these challenges by applying a slow evaporation crystallization technique to crude colloidal MIL‐55 products from hydrothermal synthesis, resulting in highly uniform ...
H. R. Haris +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The development of high‐performance electromagnetic protection materials integrating broadband absorption and effective shielding capabilities is hindered by challenges in simultaneously optimizing multiple electromagnetic properties through conventional material designs.
Changlong Du +9 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2009 某礼堂建筑群总建筑面积16400m2,建筑功能复杂,包含1100人观众厅、军史馆和图书阅览中心。本文基于结构抗火设计性能化对1100座观众厅屋盖钢结构的抗火安全性进行了评估。首先确定结构抗火性能目标,然后采用承载力法对整体结构在最不利火灾场景下的力学性能进行分析,最后根据结构的抗火性能是否满足抗火性能目标来评估结构的抗火安全性及需要采取的防火保护措施。本文结果被业主作为消防主动措施失效后实行被动消防措施的理论依据,可供类似工程的结构抗火设计参考。
周国华, 杜咏
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Jianzhu Gangjiegou Jinzhan, 2005 上海铁路南站是上海市重要的对外交通枢纽和市内换乘枢纽。由于站台和大厅采用超大空间的建筑布局,超出了国内现有建筑防火设计规范的规定。特别对于南站钢屋盖这样重要的钢结构,国内现有规范方法难以满足抗火安全性与经济性要求。本文基于性能化对南站钢结构屋盖的抗火安全性进行了评估。在评估分析中首先确定结构抗火性能目标,然后对钢屋盖结构在可能最不利火灾下的性能进行分析,最后根据结构的受火性能是否满足抗火性能目标来评估结构的抗火安全性及需要采取的防火保护措施。本文结果被业主和消防主管部门采纳 ...
李国强, 郭士雄, 蒋首超, 杜咏
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Jianzhu Gangjiegou Jinzhan, 2009 基于性能化方法对新建昆明国际机场航站楼屋顶网架结构进行了结构抗火设计。对大型网架结构整体抗火设计问题进行了探讨。推荐了一种钢结构抗火性能化设计的设计流程。介绍了抗火性能化设计中高大空间火灾下钢构件升温的实用计算公式。讨论大型网架结构抗火整体分析中的温度加载模型。推荐了适用于钢结构抗火整体分析中的荷载组合方法。
张超, 殷颖智, 罗明纯
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Jianzhu Gangjiegou Jinzhan, 2016 高温和荷载共同作用下钢材产生明显的蠕变变形,对钢结构在火灾下的变形和受力性能产生较大影响。为了研究钢材高温蠕变对约束高强度Q460钢梁抗火性能的影响,采用ANSYS有限元软件建立约束钢梁结构分析模型,引入普通钢材高温力学性能和蠕变特性,分析了约束普通Q345钢梁的火灾响应,并与试验结果进行了对比,验证了模型的正确性。采用验证后的模型,引入高强度Q460钢材的高温力学性能和蠕变模型,分析了高温蠕变对约束高强度Q460钢梁抗火性能影响的程度,并将约束普通Q345钢梁和高强度Q460钢梁的抗火性能进行了对比 ...
何平召, 王卫永
doaj