Results 31 to 40 of about 33,251 (167)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Aqueous zinc‐ion batteries (AZIBs) hold great promise for safe and sustainable energy storage, but their commercialization is impeded by severe Zn dendrite growth and interfacial instability. To address these challenges, we propose a defect engineering strategy employing ultrafine ZnAl2O4 (ZAO) nanoparticles (∼5 nm) with oxygen vacancy defects
Yilun Ren +9 more
wiley +1 more source
Gaoya dianqi, 2011 为提高脉冲功率系统中高压储能电容器的可靠性,笔者利用直流下局部放电对电容器进行缺陷检测,得到直流局部放电测量数据的统计谱图,提出基于模糊数学理论识别电容器缺陷类型的方法。首先从22个统计算子中挑选出12个具有典型特征的统计算子组成特征向量,然后通过内部缺陷、接触缺陷、重叠缺陷、油质缺陷4种典型缺陷的测量,计算出每种缺陷特征向量的正态分布隶属函数。最后对未知缺陷类型的电容器进行了模糊检测和解剖验证,对含有可视气泡已知缺陷的电容器进行了检测和模糊识别,证明了系统的实用性 ...
王鹏, 吴广宁, 张依强, 张血琴
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Efficient and durable bifunctional electrocatalysts are vital for scalable water electrolysis. Here, we realize cobalt‐vacancy (Covac) engineering in CoFeP supported on N,P‐codoped carbon nanocages (Co1‐vacFeP/NPC) through a simple route comprising a CoFe Prussian blue analog precursor, phosphidation–pyrolysis, tannic‐acid etching, and a ...
Yuan‐Liang Yuan +6 more
wiley +1 more source
A machanical vision designing of PZT wafer defect inspection system [PDF]
, 2015 压电晶体PZT产品常有裂纹、油污、破损及涂胶不均等表面缺陷，且缺陷尺寸、形状不确定，因而导致人工分检难度大，分检合格率低。为此本文提出了用机器视觉检测PZT产品的表面缺陷，研究在产品图像准确获取的基础上，通过图像增强、图像分割和缺陷特征提取的算法实施，由软件程序确定PZT产品的表面缺陷。本文主要研究内容如下： ①采用空间域和频域方法增强待测PZT图像特征，并用微分算子法和阈值分割进行PZT图像边缘分割，从而完成了工件图像在背景中的分离，降低处理的复杂性，提高处理速度。 ②采用区域连通的轮廓识别方法 ...
邹建男
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Expanding near‐infrared (NIR) spectral response and utilizing ultraviolet (UV) photons are effective strategies for enhancing the power conversion efficiency (PCE) of lead halide perovskite solar cells (PSCs). However, the range of NIR spectral response extension and the utilization of UV light for devices are not enough, and the loss of ...
Li He +9 more
wiley +1 more source
Shiyou jixie, 2015 针对高温高压热采井套管失效概率高的问题，建立了含缺陷套管、水泥环和地层耦合系统有限元模型。将温度场与结构场耦合，并考虑套管强度降低，利用CAE技术计算了完整套管及缺陷套管的Von Mises应力、变形位移和塑性变形。计算得出在缺陷深度、缺陷环向开度、缺陷数量和缺陷环向分布4个结构参数中，套管缺陷深度和环向开度为影响套管强度的最敏感性参数，进行套管安全评定时建议将缺陷深度和缺陷环向开度作为缺陷最敏感性参数。研究结果可为套管安全评定奠定基础，并为揭示套管失效机理提供依据，对预防套损具有指导意义。
刘少胡 +5 more
doaj
Study on the Defects and Perfection of the Crime of Dangerous Driving [PDF]
, 2015 伴随着现代科学技术和交通行业的快速进步，我国的汽车保有量近些年有了极快速的增加，人们的生活水平及出行便利程度有了很大的提高，但也存在很多问题和隐患。近几年，各地相继出现的一些飙车、醉驾案件，不断地向我们的社会安全提出了新的要求，挑战着人们的神经。可喜的是，《刑法修正案（八）》和《刑法修正案（九）》将危险驾驶行为规定为犯罪，对抑制危险驾驶行为起到了有效的作用。但是，我国刑法对危险驾驶罪的规定比较笼统，最高人民法院尚未制定出适用危险驾驶罪的司法解释，这就使危险驾驶罪的认定 ...
郭杏琴
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Lung cancer remains the leading cause of cancer‐related deaths worldwide, yet immune checkpoint blockade (ICB) is often compromised by an immunosuppressive tumor microenvironment (TME) with acidosis, hypoxia, and poor T cell infiltration. Here, we develop a TME‐responsive nanoplatform (MgH2@Lip/PD‐L1) that couples hydrogen gas therapy with PD ...
Xuyu Gu +5 more
wiley +1 more source
Design and Implementation of Software Potential Defect Analysis System Based on C Language [PDF]
, 2016 摘要 在航空、航天等领域，软件系统承担着飞行控制、数据采集和系统指挥等任务，起着十分重要的作用。在这些安全关键软件应用之前，必须清除其软件的潜在缺陷。由于航空航天工业的系统软件通常为实时嵌入式软件，而且在嵌入式领域中，C语言以其灵活性、易上手、效率高等特点，成为嵌入式软件开发的主流开发语言。因此，需要有针对性的对C语言的软件缺陷进行分析和处理。 目前，国内外对C语言软件的潜在缺陷分析的研究都取得了一些成果，包括若干分析方法和系统。但在实际的软件缺陷分析过程中发现 ...
梁莹
core
A Multifunctional Reducing Molecular Dopant for 16% Efficient Tin Perovskite Solar Cells
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Although lead‐based photovoltaics have seen remarkable progress, tin‐based perovskite solar cells (Sn‐PSCs) continue to face challenges due to their limited power conversion efficiency and insufficient operational stability. The primary cause of this performance gap is the susceptibility of Sn2+ to oxidation, which promotes rapid defect ...
Xianyong Zhou +12 more
wiley +1 more source