Results 41 to 50 of about 4,341 (167)
Dianci bileiqi, 2019 分别对高温硫化硅橡胶（HTV）和液体硅橡胶（LSR）未老化样品,盐雾老化1 000 h、2 000 h,紫外老化1 000 h、2 000 h试样进行傅里叶变换红外光谱（FTIR）测试,通过特征峰峰值以及特征峰面积的变化来分析不同老化条件对HTV及LSR主链以及侧链的影响,推测其憎水性、机械以及电气性能的变化。实验表明,盐雾以及紫外老化均会引起HTV主链Si-O-Si和侧链Si-CH3、Si-（CH3）2的减少,且增加老化时间会引起化学键持续断裂,这表明盐雾和紫外老化会使HTV憎水性降低 ...
李兴 +5 more
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Effects of Oat Dietary Fiber on the Quality Characteristics and Anti-aging Ability of Chiffon Cake [PDF]
This study aimed to explore the appropriate range of oat dietary fiber addition for reducing the degree of starch aging while ensuring the quality of the cake.
Anqi XU +8 more
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World Medical &Health Policy, Volume 16, Issue 4, Page 558-576, December 2024.Abstract Background Over the past decade, the ascent of personalized medicine (PM) has catalyzed pivotal transformations in healthcare systems on a global scale. Recognizing its crucial importance, the European Commission has prioritized PM within its research directives, allocating funding for international collaborative projects, such as the ...
Marzia Di Marcantonio +6 more
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EFFECT of MEDIUMS ON AGEING PERPORMENCE of AC POWDER ELECTROLUMINESCENT DEVICE [PDF]
, 1996 本文研究了介质对交流粉末电致发光器件的发光老化性的影响，用具有特殊性能的水溶性苯丙乳胶作为介质制备的交流粉末电致发光器件，其发光老化性能得到较大幅度提高；并分析了这种发光器件老化的主要原因和机制，提出防止发光老化应注意的问题。The eFFect of the mediums on agening perFormence of AC powder electroluminescent deviCe is tesearched,the special water-soluble ...
林爱清 +3 more
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Journal of Linguistic Anthropology, Volume 34, Issue 3, Page 441-469, December 2024.Abstract This paper develops the concept of “indexical deprivation” from the experiences of English learning in relation to cochlear implant use among Taiwanese deaf adults. Based on the framework of language ideological assemblage, this paper traces how institutional discourses and practices at different levels contribute to the indexicalization ...
Tsung‐Lun Alan Wan
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Dianci bileiqiZnO电阻片冲击电流耐受特性是衡量其稳定性与可靠性的重要因素之一，其冲击老化状态评估判据尤为重要。因此，本研究通过开展ZnO电阻片冲击老化试验，对比分析了ZnO电阻片在冲击老化过程中交/直流伏安特性的相关性和差异性。试验结果表明，采用峰-峰值绘制的交流u-iR特性曲线和正向直流V-I特性曲线两者在阻性电流峰值（直流电流）1mA附近区域较为接近，两者之间的差异在1%左右；且ZnO电阻片直流参考电压U1mA变化约5%时，交流参考电压u1mA变化率约为3%。因此 ...
韩永霞 +6 more
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Dianci bileiqi, 2018 针对ZnO压敏电阻在直流电压作用下老化劣化的问题,通过对ZnO压敏电阻内部离子迁移和晶界肖特基势垒的理论分析。采用ZnO压敏电阻正极性直流作用和负极性直流交替作用的试验方法。利用理论与试验相结合,得出以下结论:1)老化前压敏电阻正、负极性伏安特性曲线几乎一致,没有产生极性效应;2)在单一正极性直流作用下,压敏电阻发生老化,且随时间和电流的增加,正极性老化程度大于负极性;3)在正、负极性直流交替作用下,压敏电阻老化时间推迟,程度减小,压敏电压和漏电流变化趋势较单一正极性趋势减弱,且极性效应趋于消失;4 ...
李祥超, 马骁骐
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Starch-Based Gels as Polyphenol Delivery Systems: From Design to Food Application [PDF]
Polyphenols, a class of compounds in plant foods, have excellent biological activities, including antioxidant, anti-inflammatory, and antitumor effects. However, polyphenols are susceptible to external adverse factors such as high temperature, light and ...
CAI Jie, GUI Yue, ZHANG Die
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Journal of Elder Policy, Volume 3, Issue 2, Page 70-94, October 2024.Abstract Mobility devices are crucial in enhancing activities and participation for individuals with mobility disability, particularly among the rapidly expanding population of older adults worldwide. This paper explores patterns of mobility device use among a nationally representative cohort of community‐dwelling older adults in the United States ...
Xinran Liu +5 more
wiley +1 more source
Dianci bileiqi, 2020 由于长期运行在湿热的气候环境下,近年来我国南方地区复合绝缘子异常发热、击穿断裂等故障时有发生,严重威胁了电网的安全稳定运行。为了研究复合绝缘子硅橡胶伞套的湿热老化特性,首先对高温硫化（High Temperature Vulcanization,HTV）硅橡胶进行湿热老化实验,然后利用扫描电镜、红外光谱、热重分析、介电谱和热刺激电流测试等分析手段对湿热老化和运行老化样品进行微观分析,结果表明:湿热的联合作用能够显著加速HTV硅橡胶的老化进程,随着湿热老化时间的增加,样品的表面微观形貌、化学基团、热解性能、
曾磊磊 +9 more
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