Results 31 to 40 of about 1,417,005 (147)
Gaoya dianqi, 2016 根据江西特高压输电规划,以均匀传输方程为基础,不计特高压输电线路的电导,创建包括电容电阻和电感分布参数的特高压π型等值电路。以鄂赣特高压为例,基于ADPSS实时仿真系统,通过机电电磁混合仿真,得出了并联电抗器补偿与特高压稳态电压和暂态电压的关系。分析了并联电抗器不同加装位置和不同补偿度对特高压稳态电压以及对暂态工频过电压的影响,并根据输电线路输送功率、线路损耗和电压偏差与补偿度的关系建立目标函数,寻求最优补偿。分析结果为特高压接入电网的规划及建设提供参考。
章勇高, 常凯旋, 苏永春
doaj
Ultrasound in Obstetrics &Gynecology, Volume 68, Issue 2, Page 211-219, August 2026.ABSTRACT Objectives First, to evaluate whether the ratio of soluble fms‐like tyrosine kinase‐1 to placental growth factor (sFlt‐1/PlGF) is associated with hemodynamic changes in ophthalmic artery (OA) Doppler in near‐term pregnancy. Second, to assess the performance of OA Doppler to rule in and rule out angiogenic factor imbalance.
M. F. Tinajero +7 more
wiley +1 more source
Hypertension at 5 months postpartum in women with gestational diabetes
Ultrasound in Obstetrics &Gynecology, Volume 68, Issue 2, Page 202-210, August 2026.ABSTRACT Objective Gestational diabetes mellitus (GDM) is associated with future maternal cardiovascular disease, independent of the development of Type‐2 diabetes mellitus. As a major cardiovascular risk factor, we examined the incidence and predictors of hypertension at 5 months postpartum in women with previous GDM.
C. Gómez Fernández +7 more
wiley +1 more source
Policy Studies Journal, Volume 54, Issue 3, August 2026.ABSTRACT This paper examines how experts exert influence within China's one‐party system, where policymaking is ideologically disciplined and knowledge‐intensive. It combines the Functional Theory of Agency, which identifies patterns of action including accumulation of knowledge, brokerage, entrepreneurship, and leadership, with a typology of four ...
Giliberto Capano, Yuchen Guo
wiley +1 more source
Gaoya dianqi, 2016 为了确保特高压工程跨电网、跨区域电能计量的准确可靠,促使发电、输电及用电三方的利益得到明确和保证,解决特高压交流电网中电容式电压互感器（CVT）误差特性的现场校准试验难题,研制了一种特高压标准电压互感器一体化装置。基于工频电压加法原理,采用特殊的罐式结构紧凑化设计思路,将特高压电压互感器标准电压互感器设计成上下两级GIS单元,缩小了装置的体积和重量,以适应特高压互感器现场校验车的装载。通过理论计算确定罐体尺寸及材料,使用电磁场仿真软件对隔离互感器进行3D建模及优化设计。样机的测试结果表明 ...
姜春阳 +6 more
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Recovering Critical Elements From Wastewater for Battery Materials: A Review
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Driven by global carbon neutrality goals, the transition toward a circular economy and sustainable resource management has become increasingly imperative. Given the indispensable role of battery technologies in modern energy storage systems, strategic elements such as lithium (Li), cobalt (Co), and nickel (Ni)—identified by the European ...
Ting Lei +5 more
wiley +1 more source
Dianci bileiqi, 1982 前言采用特高压系统输电,已成为大容量电力输送的必然之路。日本特高压输电委员会已经确定,日本特高压输电的额定电压为1000千伏,最大系统电压为1100千伏。在特高压输电系统中,由于系统的操作冲击电压较低,防污设计已成为外绝缘设计的决定因素。因此 ...
尾崎勇造
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Controllable energy release in solid propellants has always been a challenging technology, and extensive efforts have been devoted to the synthesis and application of catalysts to achieve its controllable release. In this study, tannic acid (TA) and its complexes (TA‐Cu) were introduced into boron@ammonium perchlorate (B@AP) composites using ...
Yong Kou +12 more
wiley +1 more source
Gaoya dianqi, 2009 综述了国内外特高压电力变压器交流耐压和局部放电试验装置的现状;以武汉高压研究院特高压试验基地1 000 kV变压器的试验数据为参考,提出了特高压电力变压器的交流耐压和局部放电的试验方法和试验电路。论述了装置中变频电源和高压电抗器的设计方法;进行了750 kV电压等级超高压电力变压器的交流耐压和局部放电试验,对试验数据进行了分析。试验结果证明了该试验装置及试验方法的合理性,同时表明该试验装置具有可靠性高、安全性好、实用性强的特点。
仇新艳 +4 more
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT The development of high‐performance photodetectors critically relies on innovative interfacial band engineering, a strategy that enables the synergistic enhancement of photocurrent and drastic suppression of dark current. Herein, a self‐powered ultraviolet (UV) photodetector is demonstrated based on a NiO/La‐doped SrSnO3 (LSSO)/Nb‐doped SrTiO3
Wentian Zhang +7 more
wiley +1 more source