Results 31 to 40 of about 35,001 (119)

An experimental approach to assess the combined effects of multiple stressors on a large vertebrate species

open access: yesConservation Biology, Volume 40, Issue 4, August 2026.
Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta   +24 more
wiley   +1 more source

Exploring legal‐ and health‐risk messaging to reduce demand for elephant skin

open access: yesConservation Biology, Volume 40, Issue 4, August 2026.
Abstract Asian elephants (Elephas maximus) are poached for an illegal trade in their skins, which are used in traditional medicine in Africa and Asia. We explored whether messages about the legal and health risks of using elephant skin for medicinal purposes (stomach illness) could reduce such consumption.
Beilu Duan   +10 more
wiley   +1 more source

高压开关设备和控制设备的振荡波抗扰性试验

open access: yesGaoya dianqi, 2000
介绍了高压开关设备和控制设备的振荡波抗扰性试验的必要性、试验要求及试验准则。阐述了对试验波形和技术参数的要求 ,给出了试验线路。试验配置、试验中应注意的问题及试验结果的评定。
任稳柱   +3 more
doaj  

Basic income trials and the politics of scale: A research agenda

open access: yesPolicy Studies Journal, Volume 54, Issue 3, August 2026.
Abstract The growing popularity of basic income has led to extensive trials of the policy in numerous settings across the world. However, analysis of the politics of basic income, and in particular the political dynamics preceding and resulting from trial programs, lags. In response, we propose a research agenda that uses political scale to investigate
Jurgen De Wispelaere   +2 more
wiley   +1 more source

紧凑型集合式并联电容器试验问题研究

open access: yesGaoya dianqi, 2014
笔者针对紧凑型集合式并联电容器的特点,对YN接线的集合式电容器本体放电试验、温升试验、装置温升试验、放电线圈的误差试验、感应耐压试验和二次端子对地耐压试验等进行分析。通过对放电试验的分析,提出放电试验应该分相进行,不能三相并联进行的结论。通过对本体和装置温升试验的分析,提出了在目前条件下对电容器本体和装置进行温升试验的可行的试验方法。根据试验结果,得出放电线圈的误差试验应该在其安装在电容器内部后进行,对于集合式电容器的二次端子,应该再次进行对地耐受电压试验,放电线圈的其他试验可以用其安装前的试验来代替。
廖一帆   +3 more
doaj  

Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19

open access: yesPolicy Studies Journal, Volume 54, Issue 3, August 2026.
Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
wiley   +1 more source

额定电压高于1000伏系统用户内和户外瓷或玻璃支柱绝缘子的试验

open access: yesDianci bileiqi, 1983
28.锌层试验由以下内容代替本条: 28.锌层试验本试验包括: ——外观试验(见28.2条款); ——用磁力试验法测定单位面积上锌的质量(见28.3条款); ——当对试验结果有分歧时,由下列试验裁决:
兆易
doaj  

高压SF6断路器的电寿命试验

open access: yesGaoya dianqi, 1999
论述了高压SF6断路器电寿命试验的概况,提出了电寿命试验方法和对电寿命试验结果的处理方法.这种试验方法可以节省试验费用.试验结果的处理方法使得各种产品的试验结果可以进行比较,也可以将试验室试验结果与系统运行的结果进行比较.
金立湘
doaj  

基于改进CNN-BiLSTM模型和地磁监测数据的多时间长度GIC预测

open access: yesKongjian kexue xuebao
太阳风暴在电力系统网络中驱动产生的GIC会影响电力设备和系统的安全运行, 严重时还会引发大面积停电事件. 预测电网GIC水平能够为电力系统保护措施提供重要参考, 然而对这方面的研究仍显不足. 为了解决该问题, 将卷积神经网络(CNN)与双向长短时记忆(BiLSTM)以及注意力机制相结合, 利用空间天气的相关监测信息, 提出了大规模电网GIC多时间长度的预测方法.
蓝 东亮   +6 more
doaj   +1 more source

基于模拟负载法±800kV换流阀多重阀绝缘试验技术研究

open access: yesGaoya dianqi, 2012
针对±800 kV换流阀多重阀绝缘试验因试验回路尺寸大、试验电压高等造成试验实施难度很大的问题,笔者通过采用等效模拟负载模拟部分阀段,试验研究了±800 kV换流阀多重阀的直流电压试验技术、雷电冲击试验技术、操作冲击试验技术。研究表明,此种试验方法是可行的。
张小勇   +7 more
doaj  

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