Results 11 to 20 of about 8,589 (213)
Gaoya dianqi, 2010 根据IEC 60060-3所规定的振荡冲击电压波形,研究了在正极性振荡雷电冲击电压和振荡操作冲击电压下SF6气体极不均匀场间隙的放电特性,包括SF6压强（P）和50%起晕电压（UP50）关系、SF6压强（P）和50%击穿电压（UB50）关系等。并且比较了振荡雷电冲击和标准波雷电冲击下SF6气体极不均匀场间隙的放电特性的异同。结果表明,振荡型冲击电压因其振荡特性,使SF6极不均匀场间隙的放电次数增加,这有利用发现GIS中存在的例如导电尖刺等电极缺陷 ...
郭治锋 +5 more
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Dianci bileiqi, 1984 本文介绍一种应用液晶热图显示技术半定量测定ZnO元件导电均匀性的方法.此法可用于单片筛选、並联配选等,从而为提高ZnO避雷器阀片导电均匀性增添了一种新的检测手段.ZnO元件的导电均匀性大致可分为两种类型.一类对通流容量影响较大,另一类对非线性（压比）、泄漏电流影响较大.
洪德祥 +4 more
doaj +1 more source
Gaoya dianqi, 2020 灌注式支柱绝缘子内部填充材料聚氨酯孔泡不均匀可能会引起局部放电现象,国内外尚未对此做过详细研究。文中针对此类问题进行深入探究,首先深入观察了聚氨酯材料的孔泡结构,从孔泡不均匀性的角度研究了聚氨酯的材料特性;其次根据孔泡分布规律,给出了评估灌注式支柱绝缘子内部聚氨酯材料孔泡不均匀性的方法;最后,结合局部放电试验研究了孔泡不均匀性及孔径大小对其电气特性的影响。研究提出了一种基于压汞法的孔泡不均匀性评估方法,分析得出灌注式支柱绝缘子内部聚氨酯孔泡分布与偏心距有关,过量的反应物会使这种孔泡分布趋势增大 ...
管兮远 +5 more
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Gaoya dianqi非均匀覆冰和脱冰跳跃对输电线路安全运行构成了极大的威胁，在微地形、微气象区域尤为显著。为此，本文根据线路非均匀覆冰特点，设计了两种典型的非均匀覆冰形式，运用有限元方法建立了连续五档覆冰输电导线脱冰跳跃分析模型，计算得到了非均匀和均匀覆冰导线在不同非均匀脱冰形式下的动力特性，探究了档距、高差、档数等参数对非均匀覆冰条件下导线非均匀脱冰的最大跳跃高度及其发生位置的影响规律。结果表明：在不同的覆冰形式下，导线中部脱冰时的跳跃高度总是最大，且非均匀覆冰条件下导线的脱冰动力响应更加剧烈 ...
王爽 +5 more
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Strain Response of FBG at Liquid Nitrogen Temperature [PDF]
, 2007 对光纤Bragg光栅（FBG）液氮（77 K）下的应变传感技术及应变特性进行了研究.实验和分析表明：常温下FBG反射谱中的单个中心峰在低温下会劈裂为多峰,它产生于光纤、粘贴胶和金属基底热膨胀系数间的差异引起的强烈非均匀热弹性应变,使常温下均匀的光栅变啁啾化.建立了多种技术手段,成功消除了低温多峰现象,并测得了FBG低温和常温下的应变传感特性.实验结果表明 ...
冯遵安 +5 more
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Study of the pitch change of carbon coils during their growth [PDF]
, 2012 In the present paper, carbon coils (CCs) were prepared by CVD. Their morphology, particularly pitch changes of the carbon coils prepared in different conditions were observed.
Dupré, L. +5 more
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Conservation Biology, EarlyView.Abstract Constructed value of information (CVoI) is an expert elicitation decision‐analytic tool used to prioritize sources of uncertainty based on their potential to improve decision outcomes if resolved. Despite increased application of CVoI, the robustness of CVoI prioritization of sources of uncertainty relative to differences in expert elicitation
Kristin P. Davis +7 more
wiley +1 more source
Progress of dye-sensitized water-splitting for hydrogen production [PDF]
, 2006 The mechanism of dye-sensitized water-splitting for hydrogen production is introduced. Research works on the use of different dye molecules and redox mediators are reviewed.
Leung, MKH, Leung, YC, Ni, M
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT By adding CuO, the worm‐like amorphous phase and atomic clusters were simultaneously introduced, enabling the (Ni40Ti40Cu20)99.9O0.1 alloy micron columns to exhibit a uniform flow strain of over 40% and a strength of over 2.5 GPa during compression.
Huwen Ma +13 more
wiley +1 more source
Experimental Study on Multi-Jets Electrospinning via Screw Electrode [PDF]
, 2016 电纺纳米纤维在过滤材料、传感器、生物医疗、能量存储等领域都有着极其广阔的应用前景，而批量制备纳米纤维是其从实验室走向市场的关键。本文中提出一种基于螺杆电极的多射流静电纺丝装置，研究了多射流喷射调控规律，开发了带自清洁功能的储液滑块以实现纺丝溶液的持续、均匀供给，实现了纳米纤维的批量化稳定喷射。 通过ANSYS仿真分析了螺杆电极表面电场分布，完成带螺杆电极多射流静电纺丝平台机械结构与电气控制系统的设计开发；利用螺杆带动储液滑块往复运动，实现纺丝溶液的均匀涂布与持续供液 ...
陈新敏
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