Results 21 to 30 of about 9,458 (109)
Microstructure Engineering Toward High Cost‐Effective Nd–Fe–B Sintered Magnets: A Review
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Nd–Fe–B sintered magnets, critical for enhancing electromechanical conversion efficiency and operational stability in wind turbines and electric vehicle drives, are prized for their outstanding coercivity, high remanence, and superior maximum energy product.
Dongmin Zhang +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT The commercialization of lithium‐sulfur batteries (LSBs) faces dual challenges of sluggish sulfur redox kinetics and lithium polysulfides (LiPSs) shuttling. Herein, we demonstrate a synergistic strategy combining multidimensional structural confinement with d‐band center modulation to simultaneously suppress LiPSs diffusion and catalyze ...
Shibo Rong +8 more
wiley +1 more source
Functional Ecology, Volume 40, Issue 7, Page 2128-2142, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil organic nitrogen (SON) transformation is critical for global nutrient cycling and ecosystem productivity, yet how its responsiveness to climate change differs across diverse land use types remains poorly resolved.
Xinyi Yang +10 more
wiley +1 more source
Asian Politics &Policy, Volume 18, Issue 3, July 2026.ABSTRACT Gray‐zone activities have become a central feature of security competition in East Asia, particularly in the Taiwan Strait, where persistent military operations blur the boundary between coercion and armed conflict. This study develops a structured threat‐assessment framework for evaluating the intensity of PLA aerial gray‐zone pressure around
Shih‐Yin Liang, Hsuan‐Lei Shao
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Shuitu Baochi Xuebao目的系统刻画新型城镇化空间关联网络特征并探讨其对国土空间利用效率的影响，以期为完善新型城镇化政策，推动国土空间高效利用提供理论依据与政策参考。方法基于2005—2023年广东省21个地级市的面板数据，运用社会网络分析模型细致刻画新型城镇化空间关联网络特征，利用超效率SBM模型测度国土空间利用效率，通过构建面板数据固定效应模型实证检验新型城镇化空间关联网络对国土空间利用效率的影响效应。结果1）广东省新型城镇化空间关联网络形成以珠三角为核心区，其余地区为边缘区的“核心-边缘”圈层结构。2 ...
余亮亮, 廖东明
doaj +2 more sources
Gaoya dianqi, 2020 车载油浸式空心电抗器进行特高压GIL交流耐压试验时工作电流大,绕组发热功率高。为避免过热故障,研究耐压试验情况下车载油浸式空心电抗器的瞬态温度场十分必要。文中应用有限元法耦合计算了二维轴对称电抗器模型的瞬态温度场和绝缘油瞬态流体场,分析了车载油浸式电抗器的温升和散热特性。车载油浸式空心电抗器依靠绝缘油自然对流散热速率有限,文中计算了两种辅助优化散热措施。外部吹风辅助散热措施易于实现,但散热速率提高有限。环境温度降低辅助散热实现难度适中,降温效果好于外部吹风辅助散热 ...
赵科 +5 more
doaj
The Photogrammetric Record, Volume 41, Issue 195, July‐September 2026.Tri‐stereoscopic PeruSat‐1 imagery enables the simultaneous generation of 0.70 m‐resolution topography and spatially distributed Manning roughness maps, achieving 0.434 m vertical accuracy. Integrated into HEC‐RAS, these products provide consistent, high‐resolution inputs that improve hydraulic modelling and flood risk assessment in data‐scarce river ...
Jorge L. Miranda‐Pita +3 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2017 【目的】三维超声时间空间联合成像技术对早孕期胎儿心脏畸形筛查的临床应用价值。【方法】回顾性分析2013年 1月4日至2016年6月30日在我院行早孕期心脏筛查且产前可疑心脏畸形共87例，与追踪结果比较，分析三维超声时间空 间联合成像技术对心脏畸形诊断的价值，同时分析不同切面包括四腔心切面、左心室流出道切面、右心室流出道切面及三血 管-气管切面的诊断价值。【结果】纳入本研究的87例病例中，包括严重心脏畸形62例（71.3%，62/87）和非严重心脏异常25例 （28.7%，25/87 ...
符小艳
doaj
Intelligent Material Framework for Data Mining and Performance Prediction of Invar Alloy
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Invar alloys exhibit a low coefficient of thermal expansion (CTE) over a wide temperature range and are regarded as critical materials for precision engineering and aerospace applications. In this work, an integrated OLR‐IMF (an intelligent material framework based on optical character recognition [OCR], large language models [LLMs], and ...
Tongbo Jiang +11 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Semiconductor photocatalysis represents a pivotal frontier in the quest for sustainable energy and environmental remediation. Among the diverse catalytic materials, Bismuth Oxychloride (BiOCl) has emerged as a particularly promising candidate due to its unique layered structure, featuring [Bi2O2]2+ layers intertwined with halogen ions, which ...
Liu Han +5 more
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