Results 61 to 70 of about 23,003 (167)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Laser powder bed fusion (LPBF) can fabricate high‐entropy alloys (HEAs) with refined microstructure and enhanced mechanical properties. However, the deformation and fatigue mechanisms of Al‐containing HEAs produced by LPBF remain unclear. In this work, we systematically investigate the tensile properties, deformation mechanisms, and high‐cycle
Dan Zheng +4 more
wiley +1 more source
智能科学与技术学报, 2019 四轴飞行器控制活动杆件或装水酒杯平衡是一项难度系数极大的任务，所构成的模型称为四轴飞行器—倒立摆不倒平衡控制系统。基于这种特殊形式的倒立摆不倒平衡控制模型，在X-Z平面简化为线性不倒模型进行分析，建立其动力学模型，并结合滑模控制的算法，设计系统的控制器并进行仿真实验。利用滑模控制算法对四轴飞行器—倒立摆不倒平衡控制系统进行控制，实验结果表明，其表现出了优异的不倒稳定性。
孔凡国 +4 more
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Striking a balance: Stakeholder perceptions of risk in horse racing
Equine Veterinary Journal, Volume 58, Issue 3, Page 814-823, May 2026.Abstract Background Thoroughbred racing is a major industry, and in recent years public concerns about equine safety have become more prominent, particularly in relation to on‐track injuries and fatalities. This has challenged the industry's social licence to operate (SLO).
Jessie McCarthy +2 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2012 目的检测人附睾蛋白4（HE4）在移行细胞癌中的水平,推测其与移行细胞癌肿瘤学特征的关联性。方法我们选择45例移行细胞癌患者,20例良性泌尿系统疾病患者,10例健康者。观察病人的年龄、性别、体重指数及肿瘤的分级、分期等基本临床资料,分析泌尿系统移行细胞癌病人手术前、后血清人附睾蛋白4的水平变化。结果移行细胞癌的HE4水平明显高于良性肿瘤组及健康对照组,差异有统计学意义 ...
时春雷, 朱强, 韩莎莎, 张海峰
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Sodium metal batteries (SMBs) are regarded as promising candidates for next‐generation energy storage systems owing to their high theoretical energy density and low cost. However, their practical development is hindered by the instability of the electrode–electrolyte interphase (EEI), particularly under high‐voltage operation.
Xingyu Yang +10 more
wiley +1 more source
直流侧串联的多VSC-HVDC并联运行系统直流侧电压平衡控制方法
Gaoya dianqi, 2008 为提高VSC-HVDC系统传输容量,可采用直流侧串联的多VSC-HVDC并联运行系统,但需解决其直流侧电压平衡问题。笔者对其平衡控制方法进行分析,对系统存在自身参数不一致、指令功率突变、交流外部故障情况进行仿真验证。为降低器件开关频率并提高波形质量,采用了载波移相的控制方法。仿真结果证实了所提出的直流侧串联的多VSC-HVDC并联运行系统直流侧电压平衡控制以及载波移相方法用于该系统的有效性。
石新春, 周国梁, 付超
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智能科学与技术学报大模型技术的发展为融合生物人、数字人和机器人的平行人系统构建提供了崭新思路和智能基础。但是，在面临复杂系统的管控任务时，仍然存在着知识更新受限、专用能力不足以及信息隐私泄露等问题。为此，提出了检索增强生成驱动的平行人与平行智能框架——RAG-PHI，打造了开放式数据平台，为平行人系统接入实时知识、行业知识及私有知识；构建动态路由检索，进行上下文抓取和平行人能力重组；引入上下文提示学习增强思维与行为能力。进一步，面向平行人的组织管理、培训评估和运营生产模式，提出了基于RAG-PHI架构的平行人社区 ...
田永林, 王兴霞, 王雨桐, 王建功, 郭超, 范丽丽, 沈甜雨, 武万森, 张红梅, 朱正秋, 王飞跃
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Direct Observation of Matrix‐to‐Precipitate Elemental Diffusion in Severe Plastic Deformation
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Elemental redistribution, particularly the solute exchange between the matrix and precipitates, is a central issue in alloys subjected to severe plastic deformation (SPD). To elucidate this behavior, a nickel–aluminum bronze (NAB) alloy was processed by high‐pressure torsion (HPT), and its microstructural evolution was systematically ...
Xiaobin Yang +9 more
wiley +1 more source
智能科学与技术学报, 2020 人工智能、大数据等新一代信息技术的兴起使网络空间安全面临的威胁与挑战进一步复杂化。传统防御技术多采用“打补丁”式的被动检测防护机制，很难满足由新的攻击特征带来的安全防护需求。首次系统性地提出以平行智能ACP理论为基础思想的平行安全系统框架，利用生成式对抗模型、平行情报、平行区块链等方法，融入社会学、心理学和行为学等因素，建立了集描述性安全、预测性安全和引导性安全于一体的防护体系，旨在实现以“增强免疫力”为目标的预测引导防护。以工业互联网典型场景为实际案例 ...
李浥东 +5 more
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