Results 61 to 70 of about 8,218 (174)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT A comparative study was performed to elucidate the temperature‐dependent corrosion kinetics and the semiconductor/structural characteristics of the passive film formed on Fe40Ni7Cr17Mo12C13B9Y2 (at%) amorphous alloy coatings. The results indicate that increasing temperature accelerates the corrosion kinetics of the coating.
Yang Lv +12 more
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Gaoya dianqi环网柜电缆头温升是反映其运行状况的一个重要指标，通过温升阈值判断其是否存在电接触缺陷可提高产品安全运行水平。文中通过温升试验研究了环网柜电缆头电接触部位的稳定温升与负荷电流之间的关系，并在此基础上建立了温升预警阈值数学模型。通过试验验证了温升预警阈值数学模型的正确性，为环网柜电缆头温升在线监测和预警系统提供了可靠的判断依据。
陆德鹏, 韩冬, 吴希伟, 黄靖
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Formic acid (FA) is considered to be a safe and convenient hydrogen source; however, achieving controlled and efficient FA dehydrogenation under mild conditions using stable solid catalysts remains a significant challenge. Pd‐based catalysts have been extensively studied due to their superior catalytic activity to other metal catalysts.
Shuai Wei +10 more
wiley +1 more source
Risk Management of Zhangzhou Nuclear Power Engineering Equipment Procurement Project [PDF]
, 2016 核电设备采购费用占项目总投资一半左右，其中多数主设备具有单项投资高、制造周期长、产能有限等特点，且这些设备往往处于项目建设的关键路径上。当前国内在建核电工程项目建设进度屡受核电主设备供货拖延的制约和影响，如何对主设备采购过程进行有效的风险管控，保障设备在招标、监造、运输、验收等各个环节风险可控，最终按时供货，是核电项目面临的主要管理问题。 本文利用风险识别工具对漳州核电工程设备采购项目进行分析，甄别出主设备采购过程的重大风险，对重大风险进行风险评估对比，量化风险水平，编制风险报表。并通过因果分析法 ...
陈贤水
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Functional Ecology, Volume 40, Issue 4, Page 800-815, April 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Studies have shown that organisms may adjust metabolic rates in response to thermal variability, highlighting metabolic plasticity as a key adaptive mechanism. Understanding the extent of metabolic plasticity of an organism is key to predicting its adaptation to climate
Qian Hu +6 more
wiley +1 more source
Gaoya dianqi, 2018 片式散热器冷却变压器具有散热效率高,散热能力强的优点,其绕组和油的温升直接影响了变压器的绝缘性能,因此对变压器绕组和油的温升进行研究具有十分重要的意义。现有的绕组和油的温升计算方法较为复杂,计算误差相对较大。为了简化计算量,提高计算效率,避免复杂过程,提出了一种片式散热器冷却变压器绕组和油的温升工程计算方法,在分析了变压器的发热散热过程基础上,对片式散热器冷却变压器绕组对油的平均温升（铜油温差）、油平均温升、油顶层温升、绕组平均温升等进行计算,将工程计算的结果与变压器厂测得的结果做对比 ...
王楠 +4 more
doaj
Gaoya dianqi, 2022 低压预制母线用于10 kV柱上变压器的二次侧，是一体化改造的重要举措，而研究其温升特性具有重要意义。论文主要选取额定电流为630 A的低压预制母线作为研究对象，首先建立了其三维几何模型，采用电磁场—温度场以及电磁场—气流场—温度场耦合的多物理场模型，对其展开了仿真研究，并与型式试验结果进行了对比，验证了仿真结果的正确性。处于自然对流条件下的预制母线采用电磁场-温度场耦合模型，处于强制对流条件下的预制母线采用电磁场—气流场—温度场耦合模型。同时，文中仿真分析了不同负载情况下的预制母线温升分布情况 ...
古海良 +10 more
doaj
"fordi før så skreiv æ Å-G". En studie om andreklassingers valg av stavemåter.
, 2023 The purpose of this master's thesis has been to look at the choices students in Year 2 make when spelling words. The students participating in this research are in the transition between phonological and orthographic writing, and the study will focus on how these students adopt different spelling strategies. The assignment's data material is taken from
openaire +1 more source
, 2010 选取塔里木河下游3处地下水埋深>6m的监测井位作为研究点,结合典型生态监测断面的地下水位监测数据,分析不同地下水埋深处柽柳的叶绿素荧光特性和光系统的光合活性.结果表明:随着地下水埋深加大和干旱胁迫加剧,柽柳叶片的实际光化学效率、电子传输速率和光化学猝灭等参数普遍下降;非光化学猝灭和调节性能量耗散量子产量等参数显著升高,而最大光量子产量总体处于相对适宜状态.干旱胁迫下柽柳的PSII光合活性随地下水埋深增大而下降,捕获光能的过剩程度加剧,发生光抑制的几率增大,其自身良好的抗旱性和自我调节机制 ...
朱成刚 +3 more
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Temperature Rise Experiment and Control of Machine Tool Spindle [PDF]
, 2013 在静压轴承主轴的实验平台上开展了主轴温升试验,通过对主轴转速与温升试验数据的分析,得出了影响主轴温升的主要因素,并提出了控制主轴温升的一些措施。Temperature rise experiment is carried out on a machine tool spindle.The main factors influencing the spindle temperature rise are pointed out by analyzing the experiment data of ...
冯伟, 张祥雷
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