Results 21 to 30 of about 1,265,413 (112)
Time‐Efficient Columnar‐to‐Equiaxed Transition via High Magnetic Field Processing
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT The need to simplify processing routes and improve processing efficiency motivates the development of time‐efficient methods for inducing the columnar‐to‐equiaxed transition (CET) during solidification while tailoring material performance. Conventional multistep CET approaches are time‐consuming and often struggle to simultaneously regulate ...
Chendong Zhao +12 more
wiley +1 more source
Zhendong Ceshi yu Zhenduan为了实现液体火箭发动机组件在地面力学环境试验中的响应与其实际工作状态下的响应特征一致，提升组件试验考核的有效性，从边界映射途径出发，讨论了组件力学环境响应一致的边界映射问题的理论求解，提出了通过设计优化进行组件试验边界映射的工程解决方法。基于二代非支配排序遗传算法（non‑dominated sorting genetic algorithms‑II，简称NSGA‑II）和有限元联合仿真，对某型发动机推力装置组件地面力学环境试验的边界约束结构进行优化设计，获得了满足响应特征要求的组件试验边界约束结构形式，
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European Policy Analysis, Volume 12, Issue 4, Fall 2026.ABSTRACT Policy process research has excelled in explaining structural policy change within national settings, but extensions and applications to the EU level have long proven challenging for scholars. Given that the EU is currently experiencing its longest period of Treaty stability since the 1980s—having evolved into a sui generis political system ...
Vassilis Karokis‐Mavrikos
wiley +1 more source
, 2010 组件容器为组件提供部署和运行环境,是基于组件分布式应用开发的核心.近年来分布式组件的多样化和快速演化对组件容器的开发方法提出了挑战.产品线工程是基于公共的核心资产开发特定领域内软件产品系列的软件工程方法,产品线体系结构是其中最重要的部分.进行组件容器产品线体系结构的研究能够提高组件容器的结构复用性,获得更高的生产效率和质量.由于组件模型是组件容器设计的基础,在领域分析阶段引入组件模型分析,提出了组件模型分析框架,通过组件模型元素到领域需求元素的映射,建立组件容器领域模型.提出了组件容器设计的基本原则 ...
刘国梁, 冯玉琳, 魏峻
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Flexible, Robust Transparent Conductive Films With Excellent Electromagnetic Shielding Properties
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Transparent conductive films (TCFs) are indispensable components for next‐generation wearable electronics, intelligent robots, and electromagnetic interference (EMI) shielding devices. However, the fabrication of conventional random metallic mesh suffers from an inherent trade‐off between “randomness and controllability”.
Shanghao Lu +5 more
wiley +1 more source
Linchuang shenzangbing zazhi, 2013 目的 回顾性分析我科透析中心维持性血液透析患者血浆白蛋白（albumin,Alb）及波动与患者不良事件发生的关系。方法 纳入符合条件的129例血液透析患者,以住院或死亡定义为不良事件。以该研究人群的平均血浆白蛋白（mean serum albumin,Albmean）水平为标准,计算患者单次血浆白蛋白水平相对Albmean的变化值即波动。以标准差SDAlbmean=√∑（xi-Albmean）2/N-1表示。使用卡方检验,Kaplan-Meier法及COX比例风险回归进行统计分析。结果（1 ...
蒲蕾 +7 more
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Gaoya dianqi, 2023 光伏组件覆雪易造成发电损耗、组件变形、内部破坏等问题，是影响光伏电站冬季正常运行的重要因素之一。目前国内外对于光伏组件覆雪多采用人工清扫或任其自然消融，但人工清扫费时费力，而自然消融过程中造成的光伏发电损失难以评估。为此，文中首先对冰雪条件下光伏发电功率预测中的关键环节与参数进行了详细分析；随后对覆雪状态下光伏组件发电功率损失原理进行分析，进而搭建光伏组件覆雪实验平台，得出不同冰雪类型、厚度下的发电功率损失；最后建立基于蝗虫算法优化支持向量回归机的预测模型，并通过与4种不同模型预测对比 ...
李民, 杨暑森, 李科锋, 朱永灿
doaj
Sexuality, Gender &Policy, Volume 9, Issue 3, August 2026.ABSTRACT This article examines transmasculine pregnancy as a critical lens through which to analyze the intersections of cisnormativity, reproductive governance, and reproductive citizenship within healthcare systems. While existing research has documented barriers faced by transgender populations, less attention has been paid to how institutional and ...
Letícia Carolina Boffi +1 more
wiley +1 more source
±800 kV/6250 A换流阀MVU试验中模拟负载匹配性研究
Gaoya dianqi, 2017 为确保研制的±800 kV/6250 A换流阀绝缘试验的顺利进行,笔者对基于±800 kV/5000 A和±1100 kV/5 000 A大组件换流阀研制的模拟负载在±800 kV/6250 A小组件换流阀MVU绝缘试验中的可用性进行了研究;根据IEC 60700-1—2015标准,对换流阀在直流耐压试验、操作冲击电压试验和雷电冲击电压试验3项试验中呈现出的不同特性,从数值计算和建模仿真2个方面进行了研究,通过±800 kV/5000 A小组件换流阀MVU试验数据对所用方法和仿真模型进行验证 ...
马元社 +6 more
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Ultrasound in Obstetrics &Gynecology, Volume 68, Issue 2, Page 256-269, August 2026.ABSTRACT Objectives The primary aims of this study were to validate externally the diagnostic performance of the Assessment of Different NEoplasias in the adneXa (ADNEX) model for distinguishing between malignant and benign adnexal masses, when used by non‐expert ultrasound examiners in general gynecological settings with a low prevalence of ovarian ...
I. M. Dueholm Hjorth +11 more
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