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Challenging the policy space: The legitimation of alternatives in Chilean pension policy (1980–2019)
Latin American Policy, Volume 15, Issue 2, Page 235-254, June 2024.Abstract In October 2019, Chile experienced its most significant cycle of protests since the return to democracy in 1990; one of the primary demands of this cycle was the improvement of pensions. What effect did the October upheaval have on the Chilean pension policy debate?
Joaquín Rozas‐Bugueño +1 more
wiley +1 more source
Gaoya dianqi, 1995 研究了CuCr和CuCrWC真空触头合金老炼过程中表层组织形成的特点。研究表明老炼过程主要造成合金表面熔化层组织细化和成分均匀化,从而使耐电压强度升高。在CuCr合金加入WC可以提高其耐电压强度。本文还讨论了电流大小对电压老炼过程的影响。
杨志懋, 严群, 丁秉钧, 王笑天
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Effect of Co-fermentation on the Structure and Physicochemical Properties of Wheat Starch [PDF]
In order to study the effect of co-fermentation of dough by Pediococcus acidilactici and Saccharomyces cerevisiae on the structural and physicochemical properties of wheat starch, starch was extracted from sourdough co-fermented with the two strains for ...
LI Yanhui, ZHANG Ziyi, ZHANG Shanshan, JIAN Xiaoqing, MA Ling
core +1 more source
Lobbying responsiveness to congressional policy agendas
Policy Studies Journal, Volume 52, Issue 1, Page 11-29, February 2024.Abstract We examine the strategic use of contract and in‐house lobbyists by interest groups in response to shifting policy agendas. The role that lobbyists play in the policy process changes based on the policy agenda. Most of the time, subsystems manage small changes to public policy, rewarding actors with long‐term relationships. Organizations with a
E. J. Fagan, Alexander C. Furnas
wiley +1 more source
Gaoya dianqi, 2012 温度是油纸绝缘老化的主要因素。笔者设计了油浸式电力变压器常用的普通牛皮纸和环烷基矿物油复合绝缘在90℃下长达370 d的热单因子老化试验。利用XRD（X射线衍射）定期测量不同老化状态的绝缘样品,对比分析了绝缘纸的聚态结构的变化情况,并深入讨论绝缘纸聚合度下降的动力学过程。研究结果表明:绝缘纸在老化过程中,纤维素氢键和糖苷键发生断裂,引起聚合度下降,结晶区遭受破坏,晶粒尺寸减小,导致纤维素分子间作用力减弱,热裂解活化能降低;老化过程中,绝缘纸纤维素晶体类型不变,聚合度的下降规律符合二阶动力学模型 ...
向彬 +4 more
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Gaoya dianqi, 2004 向低密度聚乙烯中添加自由基清除剂能够有效地抑制电老化,因而改变了电老化过程中聚乙烯的空间电荷的分布。在直流预压和短路过程中,空间电荷量随老化时间呈线性增长。结合自由基清除剂在其它老化形式中的化学反应机理,详细讨论了自由基清除剂对聚乙烯电老化的抑制以及老化过程中空间电荷分布的影响。
李喆, 尹毅, 肖登明
doaj
Nonlinear guided wave evaluation method for detecting incipient performance degradation in polyethylene plate/shell structure [PDF]
ObjectiveQuantitative characterization of the extent of incipient damage in polyethylene plate/shell structures is crucial for ensuring the safe operation and preventive maintenance of oil and gas facilities.
Gang LIU +6 more
core +1 more source
Gaoya dianqi, 2015 复合绝缘子具有质量轻、憎水性好等优点,但也易老化,复合绝缘子老化评估成为急需解决的问题。该试验借助傅里叶变换红外光谱（fourier transform infrared spectroscopy,FTIR）憎水性喷水法和硬度测试,对不同电压等级和不同运行年限的复合绝缘子进行老化状态评估。初步探寻了电压等级和运行年限等因素与现场复合绝缘子的FTIR测试之间的联系。结果表明,运行电压等级越高绝缘子各位置基团吸收峰面积和老化程度越不均匀;随着运行年限的增加基团吸收峰呈现降低的趋势 ...
梁英, 郭兴五
doaj
Gaoya dianqi, 2020 复合绝缘子在电力系统中使用越来越广泛,但是随着运行时间的增长容易老化,威胁电力系统的安全运行。为了方便快捷地检测复合绝缘子的老化程度,文中设计了一种低磁场核磁共振的传感器和万向旋转夹具,专门适用于复合绝缘子伞裙护套的结构。测量样品为挂网运行不同时间的硅橡胶复合绝缘子,采用CPMG脉冲序列激励,得到样品的CPMG回波衰减数据。采用反拉普拉斯变换法对测量的CPMG回波信号进行反演,以横向弛豫时间作为反映复合绝缘子老化状态的特征量,并与红外光谱法测量结果进行对比。结果显示 ...
夏云峰, 宋新明, 何为
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Dianci bileiqi, 2005 为了维护低压电源系统及信息系统的可靠运行,需要对用于电涌防护的压敏电阻进行及时有效的状态检测。目前在判断氧化锌压敏电阻的老化程度方面还没有标准的方法可循。通过研究发现,氧化锌压敏电阻在给定波形幅值的冲击下所吸收的能量,即氧化锌压敏电阻的能量损耗是说明其运行性能的重要参数,通过分析能量损耗,可以判断出压敏电阻的老化程度。提出了一种利用单次流通能量来分析氧化锌压敏电阻老化程度的方法。
李军浩, 王晶, 寇小, 李彦明
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