Results 31 to 40 of about 9,880 (159)

基于多源信息融合的金属氧化物避雷器运行状态评价方法

open access: yesDianci bileiqi, 2023
为提高对金属氧化物避雷器(MOA)运行状态的准确把控能力,提出了基于多源信息融合的MOA运行状态评价方法。该方法通过评估运行巡视、带电测试与停电试验等数据对MOA运行状态的影响,建立了多源信息评价标准;应用长短期记忆循环神经网络(LSTM-RNN)、CART决策树与D-S证据理论构建了MOA运行状态评价模型;最后运用该模型对不同变电站的3个间隔9支MOA进行跟踪测试。结果显示,该模型的评价结果与停电试验结果相一致,证明了该模型对MOA运行状态评价的有效性 ...
朱育钊, 方文田, 方逸越, 李涛
doaj  

Using miniaturized laboratory equipment and DNA barcoding to improve conservation genetics training and identify illegally traded species

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva   +9 more
wiley   +1 more source

Experimental and Application Research of Novel Polyamine-Based CO2 Absorbents in Gas-Fired Power Plants [PDF]

open access: yes
ObjectivesCurrently, chemical absorption CO2 capture technology used in post-combustion is rarely applied in large-scale decarbonization projects in gas-fired power plants due to its high operational energy consumption and total costs. In order to reduce
CHEN Shaoyun   +5 more
core   +1 more source

Video Assistant Referee(ndums): A Populist Weapon or Effective Tool to Stop Autocrats in Competitive Authoritarian Regimes in Latin America?

open access: yesLatin American Policy, Volume 16, Issue 4, December 2025.
ABSTRACT In recent years, video assistant referee systems have been increasingly used to correct unfair decisions in sports. Similarly, I argue that constitutional referendums play a corrective role in hybrid or competitive authoritarian regimes, where the electoral referee is biased and the government enjoys unfair advantages.
Muhammet Derviş Mete
wiley   +1 more source

Drought decreases carbon flux but not transport speed of newly fixed carbon from leaves to sinks in a giant bamboo forest

open access: yesJournal of Ecology, Volume 113, Issue 7, Page 1746-1759, July 2025.
In forests dominated by large clonal plants, such as giant moso bamboo, drought can alter the allocation of newly assimilated C within the tissues of source ramet but may not affect its allocation among interconnected ramets or within plant–soil systems.
Xiaogai Ge   +9 more
wiley   +1 more source

Research on new technologies of fire alarm system for urban rail transit [PDF]

open access: yes
In view of the fire safety requirements of urban rail transit, the technical optimization and domestic application research of fire alarm system was focused.
CHEN Hongying   +4 more
core   +1 more source

China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition

open access: yesAntipode, Volume 57, Issue 3, Page 830-861, May 2025.
Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley   +1 more source

功率模块数不对等的MMC阀段运行试验研究

open access: yesGaoya dianqi, 2018
为了研究功率模块数不对等条件下柔性直流换流阀阀段运行试验方法,文中通过分析阀段运行试验过程中进行模块旁路试验的过程,建立了试验回路电流和模块电压的数学计算模型,提出了功率模块数不对等条件下的阀段运行试验方法。利用PSIM仿真软件对试验方法进行了仿真,并在实际的阀段运行试验中应用了该方法。仿真与试验结果表明,文中设计的试验方法可以实现功率模块数不对等条件下MMC阀段运行试验测试,满足试验要求。
田鸿昌   +5 more
doaj  

喀斯特山地垭口处直流棒形悬式复合绝缘子运行性能研究

open access: yesDianci bileiqi, 2022
喀斯特山地垭口地区地形特殊,气候复杂,运行于该地区的线路复合绝缘子老化更为严重,有必要开展专门的运行性能测试和状态评估。对4支运行于喀斯特山地垭口处的±500 kV直流棒形悬式复合绝缘子进行了试验研究,主要包括污秽度测量、憎水性测试、伞裙性能测试、水煮及陡波试验、工频电压试验、带护套芯棒水扩散试验、密封性能试验、机械破坏性试验等。研究结果表明,运行8年的直流复合绝缘子的伞裙材料性能、电气性能仍保持良好,但受山地垭口地区高风速的影响,绝缘子存在应力疲劳现象,表现为机械性能出现一定降低,且伞裙老化程度加剧 ...
赵伟   +5 more
doaj  

运行30年以上的瓷悬式绝缘子老化性能的分析

open access: yesDianci bileiqi, 2002
对运行中 3 0年以上的瓷绝缘子的工频火花电压试验 ,击穿电压试验 1 h机电负荷 ,机电破坏试验 ,孔隙试验和温度循环试验数据进行定性、定量分析 ,运用概率统计的方法 ...
唐世宇, 陈宁, 杨国建
doaj  

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