Results 41 to 50 of about 455,906 (179)
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Bimodal grain structure (BGS) demonstrates significant potential in synergistically optimizing the strength and plasticity of magnesium alloys. Acquiring the desired BGS consequently became a critical challenge. This study took the Mg‐9Gd‐1Zn‐0.5Zr (wt%, VZ91K) alloy as its subject. From the perspective of BGS formation mechanisms, it suggests
Shuai Yuan +5 more
wiley +1 more source
, 2013 本发明涉及一种反射式变形镜变焦方法及系统，方法包括以下步骤：1）根据外部变焦指令判断是否需要变焦；若是，则进行步骤2）；若否，则退出变焦过程；2）通过调整变形镜的曲率进行变焦控制；3）根据变焦时间判断变焦过程是否完成，若是，则退出焦距调整过程；若否，则继续执行步骤2）。为了解决背景技术中存在的上述技术问题，本发明提供了一种在图像采集及处理电路的基础上增加适量软件工作量以实现对变形镜的曲率和面形的控制、实现空间相机无运动部件 ...
罗明伟 +8 more
core
Functional Ecology, Volume 40, Issue 7, Page 2221-2236, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic nitrogen (N) deposition is a major driver of global change. However, its effects on the developmental plasticity of plant nutrient strategies remain poorly understood.
Quan Li +11 more
wiley +1 more source
Gaoya dianqi, 2019 变压器绕组变形与等效电参数变化的对应关系对变压器绕组变形诊断精度有重要影响。通过建立变压器绕组等效电路模型,得到了绕组结构与等效电参数之间的对应关系。在此基础上,以某变压器为例,运用电磁—结构耦合有限元方法,根据弹塑性力学原理,计算了变压器绕组在短路电磁力作用下发生的塑性变形状态、应力分布及绕组的轴向和辐向位移;然后,运用能量法计算得到了不同类型和程度的绕组变形与绕组等效电路电参数之间的对应关系。研究结果可以为从等效电路参数变化的角度诊断变压器绕组变形状态提供依据,从而提高变压器绕组变形诊断精度。
毛辰 +10 more
doaj
Journal of Animal Ecology, Volume 95, Issue 7, Page 1178-1193, July 2026.This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
wiley +1 more source
, 2015 在金属玻璃剪切带提供塑性变形的情况下,推导了剪切带特征宽带与长度和泊松比之间的关联,发现剪切带的特征宽带随着泊松比的增加而变小:塑性变形在泊松比接近0.5时将变得均匀,呈现宏观均匀塑性流动.同时,通过小平板测试发现,剪切带的内禀强度低于金属玻璃未变形时的强度,相差约20%
魏宇杰, 雷现奇
core
Methods in Ecology and Evolution, Volume 17, Issue 7, Page 2123-2134, July 2026.Abstract Elliptic Fourier analysis (EFA) is often employed in geometric morphometrics (GM), but the normalization of elliptic Fourier descriptor (EFD) has persistently posed challenges for obtaining unique and comparable results, especially in the application of outline‐based GM methods, which limits the implementation in automated analysis of numerous,
Hui Wu +6 more
wiley +1 more source
[Solid placental transmogrification of the lung: A case report and literature review]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2023 Ha XM, Yao YZ, Sun LH, Xin CY, Xiong Y.
europepmc +1 more source