Results 31 to 40 of about 19,224 (119)
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Vanadium oxides are deemed competitive cathode candidates for aqueous zinc‐ion batteries (AZIBs), benefited from their high theoretical capacity and multiple crystalline structures. However, the sluggish reaction kinetics, poor reversibility, and high solubility have hindered the practical application.
Xiaoyu Fan +7 more
wiley +1 more source
Gaoya dianqi, 2016 为了改善直流逆变站的无功功率特性,合理利用直流系统本身的无功调节特性来提升弱受端系统的电压稳定性,对直流控制方式与逆变器无功需求之间的关系进行了比较详细的分析。基于弱受端直流系统模型,首先根据直流系统Ud-Id特性曲线分析得到直流系统各种可能的控制模式下的无功特性,以及各控制模式对无功功率的调节能力;然后分析了熄弧角裕度、VDCOL参数、控制器调节速度这3种因素对逆变器无功调节的影响,并根据仿真结果总结了它们的调节规律及作用范围。对弱受端直流系统无功调节策略的确定具有一定的指导意义。
李妮 +4 more
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Functional Ecology, Volume 39, Issue 10, Page 2889-2904, October 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract In the Southwest Australian Biodiversity Hotspot, the greatest plant species diversity tends to occur on the most phosphorus (P)‐impoverished soils. Many plant species in this P‐impoverished environment release root carboxylates that mobilise soil P which is a more ...
Xue Meng Zhou +5 more
wiley +1 more source
Gaoya dianqi, 2020 文中研究了可控串联补偿装置在关键线路潮流控制中的作用。通过建立用于分析可控串联补偿装置潮流作用的电路模型,列写功率方程,使用解析方法,画出功率运行范围、有功功率和无功功率变化曲线等;分析了单个可控串补对线路输送功率的作用,通过进一步解析,重点分析了UPFC+固定串补电容对线路输送功率作用;考虑到经济性后,对UPFC+固定串补电容方案进行了最优投资建模,并给出了求解流程。通过对江苏电网中关键线路的作用分析,明确了UPFC+固定串补电容方案的合理性,并验证了求解流程的有效性。
盛能进 +5 more
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Wildlife Letters, Volume 3, Issue 3, Page 91-98, September 2025.The edge densities of cropland, developed land, and water bodies (panel a) predict the spatial probability of mammalian predation on wild turkeys (panel b) using Mahalanobis distance factor analysis in Quitman County, Mississippi, United States. The three habitat fragmentation variables are represented by three arrows, respectively.
Guiming Wang +2 more
wiley +1 more source
New Phytologist, Volume 247, Issue 6, Page 2616-2629, September 2025.Summary Seagrasses are important contributors to environmental nutrient cycling in marine ecosystems and can improve water quality by absorbing excess nitrogen (N). However, these ecosystems are vulnerable to human‐mediated pressures, including marine heatwaves (MHWs), particularly those of longer duration. We performed an experiment simulating a 30‐d,
Alissa V. Bass +5 more
wiley +1 more source
Gaoya dianqi, 2009 为了减小在投切电容器组时对电力设备造成的危害,笔者采用DSP、CPLD及高速A/D等技术,实现了交流电压、电流同步采样,能准确计算电压、电流、有功功率、无功功率及功率因数等参数,通过测量控制电源电压、环境温度以及同步开关分合闸的数据预测开关动作时间,实现电容器组的同步投切,减小涌流及过电压的危害并依据电压无功综合控制策略完成无功补偿。试验验证,在相同温度及控制电压下,机构本身分散性小,通过补偿温度及控制电压的影响,断路器满足同步控制要求。
张永斌, 袁海文
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Rare Metals, Volume 44, Issue 6, Page 3772-3783, June 2025.Graphical abstract AbstractDeveloping effective heterostructure strategies to mitigate the shuttling effect and accelerate lithium polysulfide (LiPS) conversion remains a critical challenge in lithium–sulfur (Li–S) batteries. Here, we report the first carbon–free VO2–VS2 heterostructure material synthesized via in situ sulfurization, applied as a ...
Yao‐Lin Hou +6 more
wiley +1 more source
Guangtongxin yanjiu, 2007 能量节省是无线Ad Hoc网络中的一个研究重点。功率感知路由协议不但可以解决无线Ad Hoc网络的节能问题,同时还能够提高网络的性能。文章对目前提出的功率感知路由协议进行了分类,并分别进行了描述,最后指出了功率感知路由协议的未来研究方向。
王申涛, 周熙, 杨浩
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Gaoya dianqi, 1989 苏联列宁格勒工业大学电器教研室主任格·尼·阿列克赛特洛夫教授,于1989年9月17日至10月3日应邀到西安电力机械制造公司讲学并进行学术交流。 苏联教授介绍了苏联对紧凑型输电的研究,以及与之有关的有机复合绝缘子、氧化锌避雷器和可控电抗器的研制与应用。 紧凑型输电线路,是指比常规线路尺寸大为紧凑,而输电容量却有较大提高的新结构输电线路。交流输电线路的传输功率受自然功率的限制,当线路传输功率超过自然功率时,必须增加无功补偿以保持无功的平衡,这就需要增加投资。为了提高自然功率 ...
毛宝良
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