Results 41 to 50 of about 22,003 (169)
Roll of skin antioxidant system in UV irradiation and epidermalmorphogenesis/differentiation [PDF]
, 2012 科学研究費助成事業(科学研究費補助金)研究成果報告書：若手研究(C)2009-2011課題番号 ...
Kawachi Yasuhiro +2 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Intervertebral disc degeneration (IDD) is a predominant cause of low back pain, significantly impacting quality of life. Mitochondrial fitness is essential in the progression of IDD, as it regulates cellular senescence and pyroptosis. This study investigates the role of mitochondrial caseinolytic protease P (ClpP) in alleviating senescence and
Kun Wang +7 more
wiley +1 more source
Dianci bileiqi, 2014 针对ZnO压敏电阻经受多次8/20雷电流冲击后交流老化特性变化的问题,通过对ZnO压敏电阻老化机理的理论分析,并对ZnO压敏电阻样品进行不同次数的冲击老化实验后再进行交流老化实验测量其静态参数的变化,发现适当次数的大电流冲击会增强ZnO压敏电阻的交流耐受能力;ZnO压敏电阻的U1 mA和U0.1 mA在交流老化过程中呈现小幅上升、缓慢下降、快速减小的趋势,非线性系数则呈现持续缓慢降低而后快速下降的趋势;根据实验结果,得出电子陷阱及离子迁移是交流老化初始和中期的主要老化机理,而热破坏在老化末期起主要作用。
陈璞阳 +4 more
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Fluxgate sensors with Co‐rich amorphous microwires, widely used for their low noise in magnetic field measurements, encounter significant challenges in high‐temperature environments such as well drilling and geological exploration. Prolonged thermal aging degrades the performance of Co‐rich amorphous microwires, resulting in increased noise ...
Lining Pan +10 more
wiley +1 more source
Gaoya dianqi, 2018 为分别评估变压器油纸绝缘的老化程度和水分含量,文中通过加速热老化试验和吸潮实验制备了不同老化程度下含水量不同的油浸绝缘纸试品,测试了试品的介损因数频谱和阻抗相位频谱,分析了老化、水分对油纸绝缘频域介电谱特性的影响。采用多输出支持向量回归算法（multi-output support vectorregression,M-SVR）逼近频域介电谱曲线与油纸绝缘老化和水分之间的非线性映射关系,据此预测油纸绝缘试品的老化程度和水分含量。研究表明,对于含水量在0.5～5.6%范围内、具有不同老化程度的试品,M ...
杨飞豹 +5 more
doaj
Gaoya dianqi, 2020 为提取表征油纸绝缘老化状态特征参量,将时域介电法更好地应用于油纸绝缘老化状态无损检测,在实验室条件下对不同老化程度的油纸绝缘试样进行极化去极化电流法（PDC）试验,并求得其等效模型参数;然后提出系统极点Pi作为油纸绝缘老化特征参量,并建立其与油纸绝缘老化状态关系;最后验证了系统极点用于评估油纸绝缘老化程度评估的可行性。研究结果表明:扩展Debye模型参数对油纸绝缘老化程度比较敏感,特别是时间参数大于1 000 s的极化支路,其时间常数随着老化时间的增加而呈现递增规律;对于时间常数大于1 000 ...
陈明星 +4 more
doaj
, 2015 伴隨著人口不斷老化的趨勢，長者群組日益龐大，他們在不知不覺間改變著我們的社會。人口老化雖帶來種種挑戰，但也包含商機，有不少人正看準了這個新興市場 ...
TANG, Pak Hang, Eric
core
Population Aging and China's Carbon Emissions: Attached the Employment of the Secondary Industry and the Tertiary Industry [PDF]
, 2016 面对紧迫碳减排任务的同时，我国提前进入了老龄化社会，日益加快的老龄化进程将对中国碳排放产生何种影响？现阶段减少碳排放与应对老龄化危机对中国经济发展提出了更高的要求，要兼顾二者，优化产业结构，特别是人口产业结构势在必行，伴随着人口年龄结构的老化，人口产业结构调整又将对中国碳排放产生何种影响？带着这些疑问，本文首先定性的分析了人口年龄结构老化对碳排放影响的传导机制，然后以1997-2012年的省级面板数据为基础，采用评估环境影响的经典模型——STIRPAT模型，结合适当的计量研究方法 ...
谭铮
core
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The limited osteogenic capacity of magnesium phosphate cement (MPC) has constrained its biomedical applications, underscoring the necessity to develop MPC with enhanced physical properties and bone‐forming capabilities. In this study, a multifunctional MPC system was developed by incorporating zoledronic acid‐loaded near‐infrared (NIR ...
Bin Wang +8 more
wiley +1 more source