Results 21 to 30 of about 71,604 (169)
Microstructure Tailoring of Laser Powder Bed Fused Nb521 Alloy Toward Strength‐Ductility Synergy
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Niobium‐based refractory alloys are promising candidates for high‐temperature aerospace structures, yet their limited ambient‐temperature ductility and poor processability remain major barriers to broader implementation. Here, Nb521 alloy was fabricated by laser powder bed fusion (LPBF), and the effects of processing conditions and subsequent ...
Lele Qin +7 more
wiley +1 more source
When Public Health Becomes the Weapon: Current and Prospective Consequences of the Genocide in Gaza
World Medical &Health Policy, Volume 18, Issue 2, June 2026.ABSTRACT Catastrophic humanitarian conditions during the 2023–2025 genocide in Gaza have caused a public health crisis of exceptional magnitude. This article summarizes key short‐ and long‐term health consequences for Gaza's civilian population and outlines priorities for recovery.
Therese Alexandra Evald +19 more
wiley +1 more source
, 2012 本发明公开了一种风电机组磁触变柔性刹车装置及风电机组。该刹车装置包括法兰支架、制动轮、磁轭、共轭线圈绕组、连接磁轭、磁触变胶、以及密封装置。其中，制动轮与风电机组的传动主轴连接。磁轭与连接磁轭连接而形成线圈绕组腔，共轭线圈绕组安装在线圈绕组腔内；磁轭和连接磁轭的工作面与制动轮的工作面之间形成磁隙，磁隙内填充有磁触变胶。共轭线圈绕组通电时，激励磁触变胶使得磁触变胶发生流变成固体或类固体，提高阻力。本发明的刹车装置避免了传统机械刹车刚性接触制动所引起的齿轮箱振动冲击、造成轮齿损坏的问题，有效提高了齿轮箱寿命，
陈希良, 吕宏展
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Metal‐doped carbon‐based nanomaterials (M‐CNM) play a strategically significant role in next‐generation precision antibacterial and antitumor therapies, as they integrate synergistic photothermal ablation, catalytic reactive oxygen species (ROS) generation, and multimodal imaging capabilities. However, their clinical translation is hindered by
Pengxiang Liu +5 more
wiley +1 more source
, 1980 本文将保角曲线坐标方法应用于绕物体外部的跨声速流动.文中讨论了圆柱体跨声速绕流,计算了来流马赫数M_∞。为亚临界,超临界和M_∞为l的流场.给出了不同来流马赫数下柱面马赫数和压力分布,柱面前端中心流线上马赫数分布.给出了超临界绕流时不同来流马赫数下的声速线和来流马赫数M_∞从0.2,0.3到1的等马赫数线分布.本文部分结果与已有的理论结果进行了比较.本方法计算简单,精度好,是计算厚体跨声速绕流的有效方法 ...
贾振学, 林同骥
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Gaoya dianqi, 2020 绕组变形是变压器内部的常见故障之一,严重威胁电力系统的安全运行。目前绕组变形检测均属于离线检测,无法准确定位变形故障;带电检测由于受现场复杂电磁环境的干扰,且无法进行变形故障定位。为有效提高绕组变形在线检测的准确性,本文提出了基于分布式光纤传感的变压器绕组变形故障定位方法。搭建内置分布式光纤连续式绕组模型模拟绕组变形,当绕组发生局部形变时,利用布里渊光时域反射计（BOTDR）,对光纤应变进行测量。实验结果表明,分布式光纤传感技术能够准确的实现绕组变形的故障定位,具有良好的应用前景。
杨照光 +5 more
doaj
Mountains Without Borders: Scaling up Conservation Success for Snow Leopards
Integrative Conservation, Volume 5, Issue 1, Page 1-4, March 2026.This special issue assembles pioneering research addressing three critical and interconnected challenges: establishing where viable populations persist at range edges, advancing methods to monitor this cryptic species and its prey effectively, and evaluating whether landscapes remain connected across political boundaries.
Juan Li, Lingyun Xiao
wiley +1 more source
, 2011 应用长工作距显微镜对胶体粒子自组装过程中初形核阶段进行了原位观察实验研究,并结合三相接触线附近流场的数值模拟结果对绕流的影响进行了研究.研究表明流线在短链附近发生弯曲.当颗粒靠近短链附近时,水平流将颗粒推向短链的端部.绕流将抑制形核过程中局部的过快生长 ...
蓝鼎, 王育人, 郑怀文
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Gaoya dianqi, 2018 为实现油浸式电力变压器绕组运行温度的分布式测量,及早发现绕组异常温升等问题,文中提出了一种基于Raman光时域反射计（ROTDR）的变压器绕组温度测量方法。该方法通过在变压器绕组中预埋分布式光纤,并依据拉曼散射原理来直接测量绕组温度。设计并研制了敷设分布式光纤的电磁线和绕组模型,并根据测量要求对电磁线结构和绕组绕制工艺进行了改进,利用分布式光纤测温系统对敷设分布式光纤的电磁线温度传感性能和绕组模型进行了试验。试验结果表明:基于该方法的温度测量误差≤2℃,满足变压器绕组温度测量的要求 ...
张重远 +6 more
doaj
European Policy Analysis, Volume 12, Issue 1, Winter 2026.ABSTRACT Over the past decade, the concept of “instrument constituency” has been proposed as a way in which to bridge studies on policy networks and policy instruments. This concept focuses on policy networks composed of diverse actors who are brought together by the shared goal of promoting a specific instrument.
Noémie Morize
wiley +1 more source