Results 11 to 20 of about 10,904 (161)
Rare Metals, EarlyView.ABSTRACT This study elucidates the oxidation mechanisms governing Y/Hf‐doped AlCoCrFeNiTi high‐entropy alloys (HEAs) and reveals the pivotal role of fabrication processes in dictating high‐temperature oxidation behavior. We demonstrate that casting and spark plasma sintering (SPS) promote Y/Hf segregation, resulting in heterogeneous oxide formation and
Huaqing Yi +5 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT The covalent bonds at heterojunction interfaces enable more efficient charge carrier separation than traditional weakly coupled heterojunctions, with enhanced photocatalytic performance for organic wastewater purification. The interfacial covalent bonds drive energy band reorganization, rendering the conventional independent band edge ...
Jing‐Yu Ren +5 more
wiley +1 more source
On the Damage Tolerance of Diffusion Bonded Titanium–Aluminum Phase Biomimetic Composites
Rare Metals, EarlyView.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
Spatial analysis of urban economics in Guangdong Province [PDF]
, 2017 2013-2014 > Academic research: refereed > Publication in refereed journalVersion of ...
Jin, R, Shi, WZ
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Rare Metals, EarlyView.ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan +10 more
wiley +1 more source
Gaoya dianqi, 2022 为实现变压器有载分接开关的故障诊断和状态评估，从分析有载分接开关动作时的振动信号出发，提出一种结合信息融合技术和模糊理论的故障诊断方法。根据有载分接开关的振动信号具有混沌特性，采用相空间重构方法将其映射到高维空间。然后根据相空间内相点分布的差异性，求取相点空间分布系数作为特征值。基于多传感器信息融合技术，结合相点空间分布系数，建立多通道下三维高斯型模糊集隶属函数，用以对现场测量的正常状态和3类常见故障的振动信号进行状态识别，得到较好的识别效果，可作为有载分接开关故障诊断的有力依据。
杨晓望 +7 more
doaj
Nitrogen speciation and stable nitrogen and oxygen isotopic compostions of maritime aerosol in spring over the continental shelf sea in eastern china and the Northwest Pacific Ocean [PDF]
, 2016 大气气溶胶是大气化学中多相反应的催化剂，其化学成份极其复杂。人类活动释放到大气中的不同形态的活性氮是大气气溶胶中一个重要的组成部分。在东亚冬季季风的驱使下，含有活性氮的气溶胶可以在大气中长距离传输并沉降到下风向区域的边缘海和开阔大洋。稳定氮同位素可用于追溯海洋源气溶胶中活性氮的主要来源及其在大气中的化学过程。但由于氮同位素在大气传输和化学转化过程中的分馏效应，使得其应用变得复杂。起源于西伯利亚的东亚冬季季风通过人为活性氮排放强烈的中国东北后又覆盖了整个中国东部陆架海和西北太平洋海域，而且在该海域的春季 ...
罗笠
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Characteristics of macrobenthic communities in the estuary of Dagujia River and its adjacent water areas in Yantai, Shandong [PDF]
, 2016 为了解烟台大沽夹河河口及邻近海域大型底栖动物群落特征及受干扰情况,于2012年9月在上述区域设置12个采样点进行大型底栖动物群落调查和分析。对采集的生物样品进行物种鉴定、计数和称重,利用生物统计软件PRIMER计算优势度指数(Y)、Shannon-Wiener多样性指数(H')、Margalef丰富度指数(D)和Pielou均匀度指数(J),并进行等级聚类(CLUSTER)、非度量多维标度排序(non-metric multi-dimensional scaling,MDS)及丰度/生物量曲线 ...
周政权 +4 more
core +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2023 以我国西南地区614项国家级非物质文化遗产为研究对象，综合运用最邻近指数、核密度、地理集中指数、地理探测器、缓冲区分析等方法分析西南地区非物质文化遗产的空间分布特征及其影响因素。结果显示：（1）西南地区非物质文化遗产类型空间分布差异显著，传统技艺、传统舞蹈较多，传统体育/游艺与杂技较少；空间分布呈明显的凝聚特征，其中，传统技艺、传统医药凝聚特征显著，传统体育/游艺与杂技趋向均匀分布；（2）西南地区非物质文化遗产整体呈“东多西少”的特征，形成“两核一带”空间分布格局；（3）影响因素主要有自然因素 ...
何银春(HE Yinchun) +3 more
doaj +1 more source