Results 41 to 50 of about 14,490 (205)
Application of Ultrasonic Chain Pin Sensor for Soil Wind Erosion Monitoring [PDF]
, 2022 [Objective] The application of ultrasonic chain pin sensor in soil wind erosion was studied by experiment to verify the monitoring accuracy and reliability of the equipment for wind erosion in order to provides a theoretical basis for the improvement and
Lei Lei +3 more
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Rare Metals, EarlyView.ABSTRACT The Schottky barrier height (SBH), which serves as a pivotal determinant of charge carrier injection efficiency in electronic devices, critically governs electrical behavior at metal/semiconductor interfaces. However, pronounced metal‐induced gap states at metal contact interfaces induce Fermi‐level pinning, which constrains the ...
Xiaofei Liu +10 more
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
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
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On the Damage Tolerance of Diffusion Bonded Titanium–Aluminum Phase Biomimetic Composites
Rare Metals, EarlyView.ABSTRACT The biomimetic design principles of natural structures involve the strategic integration of stiff and compliant phases to synergistically enhance strength and toughness. Its evolutionary refined natural armor, characterized by a specialized microarchitecture, enables superior damage tolerance.
Shuai Tong +10 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
Wildlife Letters, EarlyView.This review summarizes the status of musk deer in China, highlighting severe population declines due to illegal hunting and habitat loss, and proposes integrated conservation strategies including habitat protection, captive breeding, and law enforcement to support the recovery and sustainable management of this ecologically and economically important ...
Feng Jiang +8 more
wiley +1 more source
The investment research on Pinggao Electric CO., Ltd [PDF]
, 2015 我国证券市场经过20多年的发展，规模不断扩大，市场日趋成熟。截止2014年底，上海和深圳两地上市公司共计2657家，总市值37.25万亿元，年累计成交金额74.23万亿元，已经成为全球第二大证券市场。随着各项创新业务的兴起，特别是融资融券的大力推广，股票期权试点的推出，中国证券市场开始回暖，探底回升，进入全新发展阶段。然而，如何对上市公司的投资价值进行评估，进而对其股价进行估值，得出合理的估值范围，减少投资的盲目性和投机性，正确回避投资风险，依然是投资者十分关心的内容。 本文以上海证券交易所上市公司 ...
吴朝晖
core
Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
New Phytologist, EarlyView.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