Results 41 to 50 of about 18,303 (165)
, 2007 结合北京地铁13号线八达岭高架桥中预应力混凝土高架桥连续箱梁的实桥变形观测试验,以试验数据回归分析了基于综合时效的梁体后期变形.分析结果表明:统计回归所得的时效变形系数,其早期值比按我国铁路规范及ACI(American Concrete Institute)规范修正式计算所得的徐变系数略偏大,终极系数却偏小,同类轻轨高架桥梁结构后期变形按规范设计有足够的安全保证,但应严格控制早期时效变形 ...
姚谦峰, 季文玉, 雷家艳
core
The control of fragmenting swelling deformation disasters in deep mine roadways and the efficient TBM tunneling technology under such conditions [PDF]
As shallow coal resources are gradually exhausted, the exploitation of deep coal resources goes deeper, where all mines in eastern China and some mines in central-western China have entered the deep mining stage.
Bin LIU +16 more
core +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material‐stacked construction strategy to fabricate multifunctional MXene/cellulose ...
Zong‐Kai Yan +9 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2006 运用蒙特卡洛有限元法,考虑预应力的随机性,分析并计算了点支幕墙预应力索桁架支承体系的挠度最大值的统计特征值,得到其失效概率。进而对索桁架的预应力控制进行探讨。
汤伟方, 吕令毅
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Graphitic carbon nitride (g‐C3N4) doped with 3d transition metals (3d‐TM@g‐C3N4) has gained attention as a noble metal‐free alternative for oxygen evolution and reduction reactions (OER/ORR). Yet the key mechanisms driving its performance remain debated, especially across different charge states.
Jing Zhang +6 more
wiley +1 more source
Key technologies for supporting ultra large section tunnels and the evolution law of mining induced stress [PDF]
In response to the problem of controlling the deformation of surrounding rock in ultra large cross-section tunnels, taking the mining roadway of the ultra high mining face in Caojiatan Coal Mine as the research background, the distribution law of the ...
Jianchao REN +6 more
core +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Prelithiation is effective for compensating active lithium‐ion (Li+) loss in silicon (Si)‐based battery electrode materials. However, owing to the dynamic growth of the solid electrolyte interface (SEI), capacity fading remains the biggest challenge for the industrialization of Si electrodes.
Wen‐Jie He +9 more
wiley +1 more source
, 2014 我国各地实施的预制装配式混凝土结构体系类型少,建筑的使用功能、高度、层数、抗震设防烈度等适用范围要求严格。保证较高的预制装配率,充分发挥预制、装配提供的技术优势,未来预制装配式混凝土结构技术在构件、结构等方面可以获得很大发展。可以将预应力技术、高强和高性能材料技术、新型结构构件技术等有利于提高构件性能的技术用在预制构件上。可以将隔震和消能减震技术、人工塑性铰、加设支撑、关键部位性能提升技术、主次结构设计技术等有利于提高结构性能的技术应用在建筑结构上。发挥叠合构件部分现浇处理的优势,与建筑和设备专业配合 ...
林树枝, 石建光
core
Functional Ecology, Volume 40, Issue 4, Page 800-815, April 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Studies have shown that organisms may adjust metabolic rates in response to thermal variability, highlighting metabolic plasticity as a key adaptive mechanism. Understanding the extent of metabolic plasticity of an organism is key to predicting its adaptation to climate
Qian Hu +6 more
wiley +1 more source
Success of restoration strategies in preventing extirpation of 2 critically endangered coral species
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract An unprecedented marine heatwave in 2023 caused widespread coral bleaching and mortality throughout the Caribbean. In the Florida Keys (USA), 2 foundation species, elkhorn coral (Acropora palmata) and staghorn coral (Acropora cervicornis), were severely affected.
Erinn M. Muller +29 more
wiley +1 more source