Results 11 to 20 of about 11,711 (94)
幼儿教育科学, 2020 儿童潜能开发左右均衡,拓展潜能针对孩子的能力发展需求进行划分,包括语言能为、数学能力、判断能力等15种能力,全面、均衡开发孩子大脑潜能。
令如 王
semanticscholar +1 more source
, 2020 以SF6气体作为绝缘介质的SF6断路器，有开断能力强、允许连续开断的次数较多且噪声小和无火花危险、尺寸小体积小、灭弧能力强、寿命长、便于维护等优良性能，其绝缘性能和灭弧特性都要比油断路器好很多，是目前电网普遍采用的产品。但是在认识SF6断路器本身优点的同时，还应注意到影响SF6断路器安全运行的因素，SF6断路器在实际应用中会出现SF6气体压力值降低等相关的一些安全问题。文章就SF6断路器运行中存在的问题及改进措施进行简单的探讨，希望能给相关人员在解决类似问题时提供参考，以提高SF6断路器的运维水平。
荣山 李
core +2 more sources
教育研究, 2019 随着社会的不断发展,中国的婚姻和家庭结构发生了深刻的变迁,除了传统的核心家庭、直系家庭,开始出现越来越多的单亲家庭和重组家庭。探讨核心家庭中父母缺位对青少年学业能力的影响、直系家庭中祖父母对青少年学业能力的影响、单亲家庭中缺少父母其中一方对青少年学业能力的影响以及重组家庭中继父或继母对青少年学业能力的影响具有重要意义。
盈 许
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Research on Auxiliary Power System Scheme for Offshore Converter Station [PDF]
[Introduction] Aiming at the characteristics of offshore converter station, this paper proposes the design scheme for auxiliary power system of offshore converter station.
Sheng LIU, Zeyong LIANG, Zikai LU
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Design and Implementation of Online Monitoring System for HVDC Breaker Based on GPRS and PAC [PDF]
, 2014 近年来随着我国坚强智能电网的快速建设和发展，越来越多的系统应用环节需要使用远程在线监控技术，人们对远程监控的实时性、可靠性和功耗的要求也越来越严格。高压直流开关作为高压直流输电网络中的重要组成部分，对它的各项基本参数和运行状态参数的测量也一直是直流输电技术的研究难点之一，主要原因在于：（1）信号采集困难：它是高压设备，作用时会释放巨大的能量；（2）信号传输困难：设备处于高压运行环境，与地面存在较大的绝缘间隔，无法使用有线通讯传输方式；（3）参数无法直接获得：设备自身没有相应的信号传感设备 ...
许登华
core
Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.ABSTRACT Bangladesh's goal of achieving high‐income status by 2041 requires dependable, low‐emission, and affordable energy. With near‐universal grid coverage and increasing demand, nuclear energy is a strategic asset for long‐term baseload supply. However, the existing financing model, typified by the country's most expensive $12.65 billion Rooppur ...
Hafiz Ahmed
wiley +1 more source
Nitrogen Anchoring Effect Triggering Improved Reversible Hydrogen Storage of Mg(BH4)2
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT This research uncovered the influence of nitrogen‐doped MXene Ti3CN on the reversible hydrogen storage properties of Mg(BH4)2. The Mg(BH4)2‐20Ti3CN composite began releasing hydrogen at a temperature of 80°C. In addition, the composite discharged over 8.8 wt% hydrogen at a comparatively lower temperature of 270°C, whereas the pure Mg(BH4)2 ...
Zhen‐Xuan Ma +7 more
wiley +1 more source
Constructing Serrated Boride Composite Layer for Enhancing Wear Resistance of Ti6Al4V Alloy
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Appropriate configuration combined with strong interface bonding is the essential requirement for developing high wear‐resistant coatings. Herein, based on the powder‐pack boriding process, the properties of Ti6Al4V alloy are effectively improved by constructing a serrate tribological boride composite layer.
Ying Wu +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Enhancing the strength of 7000 series high‐strength Al alloys remains a critical challenge to meet the demands of increasingly demanding service environments. In this study, a novel approach is proposed for developing high‐performance Al alloys through a combination of powder mechanical alloying, powder press‐forming, rolling deformation, and ...
Peng‐Fei Ji +4 more
wiley +1 more source
Robust metrics for quantifying and comparing resistance and recovery in experimental studies
Methods in Ecology and Evolution, Volume 17, Issue 1, Page 6-14, January 2026.Abstract Various indices have been developed to experimentally quantify resistance and recovery (two components of engineering resilience) in response to anthropogenic and natural disturbances. This diversity complicates the selection of appropriate metrics for comparing resilience across ecosystems and studies.
Zewei Zhuang +2 more
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