Results 31 to 40 of about 15,245 (165)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT This study presents an assessment of four representative expansive additives—calcium sulphoaluminate–calcium oxide, magnesium oxide, sodium lauryl sulfate, and sodium abietate—and their effects on the expansion behavior, mechanical development, and microstructural characteristics of cemented paste backfill (CPB).
Lijie Guo +5 more
wiley +1 more source
Schedule Management in Smart Energy Meter Launch Project [PDF]
, 2016 质量、进度、成本、安全是企业生产经营过程当中的主要管理对象，而在新生产项目建设投产过程中，尤以进度管理为重，本文选取研究的三相智能电能表投产项目就是以项目进度为主要管理对象。 本文选用R公司三相智能电能表投产项目作为本论文研究的对象，回顾了项目进度管理的方法、项目计划制定与项目进度控制的原理，阐述了智能电能表投产项目的特点、意义及其特殊性要求，设计了三相智能电能表投产项目的进度计划，介绍了项目实施过程中遇到的问题与解决方法。 论文分析了计量新产品投产过程中项目化管理方法的应用与作用 ...
吴章坤
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An analysis method for the maturity of power technology based on literature search [PDF]
China’s power industry has gone through a period of rapid development. With the transformation of the global energy structure, the development goal of building a new type of power system was proposed, which pointed out the direction for the next stage of
HE Dongshan +5 more
core +1 more source
, 2023 含高比例新能源的直流外送系统由于送端发电设备支撑能力薄弱，在直流故障发生后新能源发电设备面临着过电压脱网风险。为了防止新能源脱网事故的发生，首先建立新能源直流外送系统仿真模型分析新能源机端暂态过电压形成机理，其次根据无功传输规律分析常规机组、调相机、电气距离等因素对新能源脱网的影响，定量分析常规机组的电压调节灵敏度，在此基础上利用新能源短路比指标对新能源脱网情况进行量化分析，最后根据分析结果提出了提高短路容量、提高风机高压穿越能力等预防直流故障后新能源脱网的策略 ...
严欢 +5 more
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Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
New Phytologist, Volume 250, Issue 2, Page 1231-1247, April 2026.Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
wiley +1 more source
Gaoya dianqi, 2011 1000kV电压互感器是实现特高压电网电能计量及电网保护的关键设备,中国特高压工程所采用的1000kV电压互感器均为自主研制,如用于敞开式变电站的柱式电容式电压互感器,用于GIS站的罐式电容式电压互感器、罐式电磁式电压互感器和电子式电压互感器等。为提高特高压电压互感器技术水平,总结研究经验,笔者介绍了适用于特高压敞开式变电站和特高压全封闭气体绝缘变电站（GIS）的1000kV电压互感器类型及原理,描述了中国特高压工程中1000kV电压互感器样机研制进展 ...
李璿, 王晓琪, 余春雨, 吴士普
doaj
Rationality study of China UHV construction planning based on the economic analysis [PDF]
, 2012 我国能源资源呈逆向分布，能源资源丰富地区远离经济发达地区，我国三分之二以上的煤炭和水能资源分布在西部和北部地区。目前我国已经在东中部负荷中心建设了大量煤电厂，负荷中心电厂高度依赖煤炭运输，导致我国铁路运输压力过大，同时受环保、土地等约束，我国煤电布局必然要逐渐向西部、北部煤电基地转移。因此，从地域上看，未来我国煤电基地、水电基地将远离负荷中心，因此，建设具有远距离、大容量、低损耗输电能力的特高压输电系统，是中国能源和经济社会协调发展的必然要求。建设特高压输电系统有利于促进大煤电 ...
李铁楠
core
Summary of Desert Photovoltaic Power Transmission Technology [PDF]
To achieve carbon peaking and carbon neutrality goals and improve energy efficiency, new energy plays a major role in China strategic deployment. However, as centralized photovoltaic is located in desert areas, photovoltaic power transmission has become ...
CHU Shuai +5 more
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Integrative Conservation, Volume 5, Issue 1, Page 125-136, March 2026.We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry +5 more
wiley +1 more source
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