Results 1 to 10 of about 18,691 (128)
, 2023 大容量试验是检验电力装备性能，保障装备安全可靠运行的重要环节。现有的大容量试验回路主要依靠人工操作，存在流程复杂、效率低且易出错的问题。针对大容量试验回路智能化控制的难题，研究建立了冲击发电机单电机短路模型和双电机并联短路模型，分析了发电机短路特性，结合典型大容量试验回路设计了一键顺控方案，提出试验回路一键顺控操作流程。通过对发电机短路模型和大容量试验回路系统的仿真 ...
吴益飞 +7 more
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Gaoya dianqi, 2021 为研发高压断路器合成回路试验同步控制系统,设计了一套能够在实验室环境下调试合成试验同步控制的模拟装置。首先,根据合成回路的试验机理设计了以下两部分:模拟三相短路状态下传感器采集的测试信号发生器以及模拟程控仪按设定时序给出的高压开锁信号触发器;同时,设计了参数调节器,使该测试系统可根据测试需要进行参数调试。通过与合成试验回路同步控制系统的最小系统进行联调,验证了其用于合成回路控制系统的研发设计的可行性。
洪叶 +4 more
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Effects of political identity activation and inaccurate metaperceptions on attitudes toward wolves
Conservation Biology, EarlyView.Abstract Polarization between groups can undermine durable conservation outcomes. Activating group identities (i.e., an individual's sense of self derived from membership in a group) can exacerbate differences, especially when people hold inaccurate perceptions of their peers and rivals.
Alexander L. Metcalf, Justin W. Angle
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Researchs on Synthesis of Zeolite Y From Pyrophyllite [PDF]
, 1996 用福州叶蜡石，在适量补硅的条件下，可合成出y型沸石产物，用Xrd进行了表征，其硅铝比为4.1~5.0，每克叶蜡石可制出1.2克产品，对焙烧和合成过程进行了分析和讨论，试验结果表明：叶蜡石可作为合成y型沸石的廉价原料，有良好的应用前景。Zeolite Y was synthesised From Fuzhou pyrophyllite under condition of adding an amount of Na_2 SiO_3.The products were characterized by ...
刘新锦, 黄铁钢
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Although the use of AI technologies (e.g., chatbots and automated writing evaluations (AWE)) has gained considerable attention in language learning fields in recent years, how AI technologies have been designed and implemented in language learning education, as well as their effectiveness, is understudied.
Shen Qiao +2 more
wiley +1 more source
The relation between the fluidity of cement paste without bleeding and concrete-slump-lost controlling ability [PDF]
, 2004 在研制合成氨基磺酸系高效减水剂的过程中,对比了合成产品的无泌水水泥净浆在2h内的流动度和掺入了合成产品的混凝土在2h内的坍落度损失值。结果表明,利用合成产品的无泌水水泥净浆流动度的保持性能可以定性判定合成产品在保持混凝土坍落度方面的能力。采用这一方法,在检测合成产品性能的过程中,可以大大减少后期混凝土性能检测的试验量。This paper mainly discusses the performances of cement paste applying Point-AH ...
于飞宇 +5 more
core
Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19
Policy Studies Journal, EarlyView.Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
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, 1995 利用基团转移聚合（ＧＴＰ）技术，在室温厂使用单官能团引发剂，通过对单体加科顺序与时机的控制．合成了一系列不同组成比、不同分子量的聚甲基丙烯酸甲酯－聚丙烯酸正了酯（或乙酯）－聚丙烯腈嵌段共聚物用ＦＴ—ＩＲ，１Ｈ—ＮＭＲ，ＧＰＣ等方法对共聚物进行表征 ...
丁马太 +4 more
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT NiFe‐based MIL‐55 metal‐organic frameworks (MOFs) face challenges in achieving atomically precise composition and reliable methods for uniform growth. This study addresses these challenges by applying a slow evaporation crystallization technique to crude colloidal MIL‐55 products from hydrothermal synthesis, resulting in highly uniform ...
H. R. Haris +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Achieving a simultaneous enhancement of strength and ductility remains a critical bottleneck for the large‐scale and cost‐effective engineering application of magnesium alloys. In this work, guided by first‐principles calculations, we tailored the τ‐Mg32(Al,Zn)49 phase and optimised twin boundary, thereby designing and successfully ...
Yun‐Xuan Zhou +8 more
wiley +1 more source