Results 21 to 30 of about 790,625 (168)
Dianci bileiqi, 2003 研究了制造过程中的升温速度、烧结温度、保温时间及冷却速度对氧化锌压敏电阻片电位梯度的影响,对氧化锌压敏电阻片的烧结工艺进行了优化,并从理论上探讨了升温速度、烧结温度、保温时间及冷却速度影响氧化锌压敏电阻片电位梯度的机理。试验结果表明,连续缓慢升温至1200℃保温3h,随炉冷至室温的烧成制度有利于获得优异的电性能。
严群, 唐俊, 陈家钊, 涂铭旌
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Jianzhu Gangjiegou Jinzhan, 2021 采用有限元软件ABAQUS建立了用于模拟预应力组合梁在火灾下全过程受力行为的模型,研究拉索防火涂层对预应力连续组合梁抗火性能的影响。考察组合梁跨中挠度、拉索应力及塑性应变随温度的变化,分析了预应力组合梁在高温下的温度变化和破坏模式。结果表明:钢梁下翼缘与腹板升温较快,二者温差很小,而腹板与上翼缘的温差较大;混凝土截面各测点处升温速率由下至上依次降低,上表面与下表面的最高温度差可达约700℃;当拉索有5 mm厚防火涂层时,在升温前期其温度随时间延长而上升的幅度比无防火层时温度上升的幅度要小,同一升温时间下,
周焕廷 +5 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo +6 more
wiley +1 more source
Dianci bileiqi, 2010 比较了用热膨胀仪和耐火度测定仪测定电瓷材料烧结温度的结果,并用热膨胀仪探讨了电瓷材料的烧结温度与升温速率的关系。研究表明:用热膨胀仪测定电瓷材料的烧结温度和烧结温度范围信息量大、准确度高、可靠性好。电瓷材料烧结温度Ts与升温速率V的对数满足线性关系,能较有效地评价在不同升温速率下的烧结温度。
周海球, 胡雪岩, 肖汉宁
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Functional Ecology, Volume 40, Issue 7, Page 2128-2142, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil organic nitrogen (SON) transformation is critical for global nutrient cycling and ecosystem productivity, yet how its responsiveness to climate change differs across diverse land use types remains poorly resolved.
Xinyi Yang +10 more
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Integrative Conservation, Volume 5, Issue 2, Page 225-235, June 2026.This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang +11 more
wiley +1 more source
Dianci bileiqi, 2015 研究了冲击老化过程中温度对压敏电压和泄漏电流的影响。研究表明,压敏电压呈现弱的负温度特性。随着冲击次数增加,压敏电压与温度的相关性有增强趋势,而且压敏电压随温度变化的波动变得明显。泄漏电流受温度影响较大。随着温度上升,泄漏电流呈指数函数上升,具有较强的正温度特性,且随着冲击次数增加,正温度特性越强。
曹洪亮 +4 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Near‐infrared (NIR) phosphors with broadband and efficient emission are pivotal for the performance of NIR phosphor‐converted light emitting diodes (pc‐LEDs). In this study, the double perovskite phosphor La2MgTiO6:Cr3+ phosphor with broadband emission in the range of 650–950 nm was prepared.
Xu Qian +7 more
wiley +1 more source
Gaoya dianqi, 2015 线芯温度是反映电缆正常运行与否的重要参数,线芯温度过高会加速电缆绝缘老化,导致电缆绝缘水平降低。针对电缆线芯温度测量一直缺乏有效监测方法的问题,笔者提出基于电缆绝缘层温度和运行电流计算电缆线芯温度的方法。根据10 kV矿用高压电缆物理结构,建立了线芯温度计算模型,设计了电缆线芯动态温度实验方案,采用红外热像仪测量剥去护套的电缆绝缘层温度和线芯温度,利用热路模型反演计算线芯温度,并进行了实验验证。实验结果表明,线芯温度计算值与测量值之间的误差低于5%,监测方法满足电缆线芯温度实时监测要求。
苏文 +5 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He +13 more
wiley +1 more source