Results 41 to 50 of about 14,739 (111)
Gaoya dianqi, 2007 介绍了直流输电工程采用的直流滤波器的类型与构成,分析了±800 kV特高压直流输电工程换流器在直流侧产生的谐波的特点,并与±500 kV高压直流输电工程做了比较。以实际的±800 kV特高压直流输电工程为例,对换流器在直流线路上产生的等效谐波干扰电流进行了计算,对不同直流滤波器设置方案下的滤波效果进行了比较,并以计算结果为依据提出了较为合理的±800 kV特高压直流输电工程直流滤波器设置方案,为最终确定实际工程直流滤波器方案具有一定的参考作用。
张万荣, 任军辉, 王蔚华
doaj
On the Characteristics of the Transistor, and the Mechanisms of the Operation of Transistor Chopper [PDF]
, 1965 On the basis of Ebers-Moll equations of the transistor, I have studied the methods for the indication of the characteristics of the transistor, with aid of the X-Y recorder.
中川 孝之
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Clip Voice: Misogyny and the Renegotiation of a Gendered Vocal Style in Chinese Digital Discourse
Journal of Sociolinguistics, Volume 29, Issue 5, Page 348-359, November 2025.ABSTRACT The participatory culture of social media allows women's voices to be heard but also parodied and policed. On Chinese social media platforms, where performers rapidly adopt and transform vocal trends for engagement, discourse on gendered vocal styles has proliferated.
Zichuan Yu, Rebecca Lurie Starr
wiley +1 more source
NBDC interconnection power supply system with Emergency EV electric power transportation assistance using Residential PV-PCS [PDF]
, 2016 九州工業大学博士学位論文 学位記番号:生工博甲第274号 学位授与年月日:平成28年9月23日第1章 緒論|第2章 太陽光発電とEV 蓄電を用いた出力変動低減の基礎的検討|第3章 非常時対応EV 蓄電連係PV-PCS 自立電力供給システム|第4章 EV 蓄電連係機能的PCS 電力供給システム|第5章 蓄電装置連係住宅用PV-PCS 電力供給システムの開発|第6章 結論|第7章 ...
藤 清高
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Neonatal Health Within War Contexts: Insights From the Colombian Experience, 1998–2007
Latin American Policy, Volume 16, Issue 3, September 2025.ABSTRACT The Colombian Armed Conflict intensified 1998–2002, with its urban dynamics continuing to influence neonatal health through 2007. Using data from the National Centre of Historic Memory and Civil Registration and Vital Statistics, this study examines the effects of regional violence on neonatal health outcomes.
Harold Mera León +1 more
wiley +1 more source
The study of bidirectional DC-DC converter in the DC microgrid [PDF]
, 2016 作为新能源的有效利用方式之一的直流微电网没有无功功率的损耗，不需要跟踪频率和相位，可靠性和可控性有较大程度的提高，更适合分布式能源的接入和应用。双向DC-DC变换器承担着母线与储能之间能量双向流动的重要作用。同时，它还可以作为直流微电网之间的互联元件，具有十分重要的研究价值。 本文针对全桥拓扑结构的双向DC-DC变换器展开较为深入的研究。 首先，详细分析了在移相控制方式下，双向DC-DC变换器的在降压方向和升压方向的工作原理及零电压开关（ZVS，Zerovoltageswitching）的具体过程 ...
纪承承
core
Joint Extraction Method for Spatial Relations in Chinese Geological Texts
Earth and Space Science, Volume 12, Issue 8, August 2025.Abstract Extracting spatial relations of geological entities is an important prerequisite for achieving natural language processing tasks such as geological knowledge question answering and semantic search, and is an important means to achieve structural reconstruction of unstructured geological data.
Chuan Chen +9 more
wiley +1 more source
Dianci bileiqi, 2016 目前±1 100 kV特高压直流系统还没有工程实际,但直流电压由±800 kV提高到±1100 kV后,±1 100 kV直流换流站直流场防雷可能会面临一些新问题。例如线路进线段杆塔比±800 kV更高,绕击和反击电流会更大,导致直流换流站直流场雷电侵入波过电压也会更高,而受设备制造、运输能力和高度的限制,换流站设备的内外绝缘水平并不是按比例线性增大的,这样对±1 100 kV直流换流站直流场的避雷器布置和保护水平提出了更严格的要求。本文依托准东-重庆±1 100 kV直流输电工程 ...
万磊, 范冕, 何慧雯
doaj
Effects of cabbeling and thermobaricity on AABW and MCDW formation around 110°E-140°E in Southern Ocean [PDF]
, 2016 第3回極域科学シンポジウム/第35回極域気水圏シンポジウム 11月29日（木） 国立国語研究所 ...
Ashida Masanari +3 more
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Setting goals for pollinator gardens
Conservation Biology, Volume 39, Issue 4, August 2025.Abstract In recent years, declines in animal pollinators have stimulated tremendous interest in pollinator‐friendly gardening. There is a widespread notion that pollinator gardens are beneficial, but the specific capacity of pollinator gardens to improve biodiversity conservation and societal well‐being remains unclear.
Nicholas N. Dorian +3 more
wiley +1 more source