Results 41 to 50 of about 9,297 (161)

Porous Mn2O3@C Cathode With High Activity and Long Lifespan for Aqueous Zinc Ion Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Manganese‐based oxides are widely employed as cathode materials for aqueous zinc ion batteries (AZIBs) due to their low toxicity and high theoretical specific capacity. However, their inherent poor electrical conductivity, coupled with the dissolution of manganese into the electrolyte, often leads to structural degradation of the cathode.
Cheng‐Jie Yin   +5 more
wiley   +1 more source

优化问题神经网络方法的发展及有待解决的问题 [PDF]

open access: yes, 2006
一些复杂的优化问题用传统的运筹学方法很难找到最优解,而神经网络本身具有很强的自适应性、鲁棒性和非线性复杂问题的搜索能力,在解决这些问题上有很大的优势。本文探讨了几种用于解优化问题的神经网络的方法,考察了这些神经网络在优化问题的研究进展。在此基础上,提出了一些有待研究的问题。国家教育部新世纪优秀人才支持计划资助(NCET-04 ...
朱建平, 林静怡
core  

Enhancing the Ionic Conduction of Ceria‐Based Electrolytes for LT‐SOFCs via Entropy Engineering

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Developing alternative electrolytes with enhanced ionic conductivity is crucial to reducing the operating temperature of solid oxide fuel cells (SOFCs) for broader applications. Entropy engineering offers many opportunities for material design, presenting a promising avenue to develop new electrolytes.
Xiu‐Xiu Li   +6 more
wiley   +1 more source

Fast Transient Response Low Dropout Regulator Design [PDF]

open access: yes, 2012
在电子系统应用越来越广泛的今天,集成电路芯片的研发和制造越来越呈现出高速,低电压,低功耗的特点。电源管理芯片是电子系统不可或缺的重要模块,随着电子应用的多样化,电源管理芯片提供了多种对应的电源解决方案。在便携式应用领域和一些低压电子系统中,低压差线性稳压器(LowDropoutRegulator,LDO)由于成本较低,电源纹波抑制性能好,结构简单而获得了大量的应用。相对其他电源管理芯片来说,LDO线性稳压器的电源转化效率较低,因此研究具有高电源转化效率,低压差 ...
钮海洋
core  

Boosting TiO2 Photocatalytic H2O2 Production via S, N‐Codoped Lignin‐Derived Carbon Dots: Quantifying the Enhancement Role

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Carbon dots (CDs) have emerged as promising modifiers for boosting the photocatalytic H2O2 production, yet their precise role remains to be quantitatively elucidated. Herein, S, N‐codoped lignin‐derived carbon dots (SN‐LCDs) and lignin‐derived carbon dots (LCDs) were synthesized and employed to modify TiO2.
Bin‐Peng Zhang   +6 more
wiley   +1 more source

Research and Design of the Equilibrium System of Lithium Battery Pack [PDF]

open access: yes, 2010
锂电池是一种既节能,又能达到高度环保效应的能源,中型和大型锂电池组作为电动车的主要能源,随着电动车的不断推广其应用越来越广泛。目前,电池组的工作寿命和使用性能问题是制约其发展的主要因素,而锂电池组的均衡系统能缓解这些问题。 为了延长串联电池组的工作寿命,提高电池组的使用性能,本文对锂电池组的均衡系统进行了研究,设计了两块锂电池组均衡保护板,利用本设计的均衡保护板来进行充放电工作的串联锂电池组,其单体电池的不一致性有所减小,使用性能大大得到了提高。 第一块锂电池组均衡保护板以单片机为控制核心 ...
黄晶晶
core  

配电线路故障定位的实用方法

open access: yes, 2020
随着我国经济的快速发展,我越来越重视现有的 配 电 网 故 障 的 定 位 分 析 方 法 的 探 索 和 研 究。而 针 对 单 项 接 地 故 障所确定出来的配电网故障,我国已经开始将不同的电路理论转化为实际的应用 分 析 理 念,并 且 根 据 不 同 的 方 法 测 定 出 了 有 效的数据故障分析的处理形式,在此期间已经开始采用其他方法来证明了研究方法的正确性以及良好的应用前景。
琪 周, 顺 梅
core   +1 more source

Advancing the concept of windows of opportunity to explore the dynamics of the sustainability transition: The development of the EV market in the UK

open access: yesEuropean Policy Analysis, Volume 11, Issue 3, Page 333-367, Summer 2025.
Abstract In this study, we seek to understand the interplay between industry and policy, to explain how and why the UK shifted from the promotion of low‐emission road transportation, to policy based on zero tailpipe‐emission electric vehicles (EVs), as part of its evolving net zero ambitions.
Ural Arslangulov, Robert Ackrill
wiley   +1 more source

基于数值电磁场仿真计算的电力杆塔雷击浪涌响应研究

open access: yesGaoya dianqi, 2006
在分析天线电磁场理论的基础上,利用由该理论建立的数值电磁场仿真程序,计算了电力输电线路杆塔浪涌响应,并与传输线理论计算的浪涌响应进行了对比,证明采用数值电磁场方法计算杆塔雷击浪涌响应是可行的,可以用来计算雷击杆塔时架空线路上的感应过电压值。
莫付江, 陈允平, 阮江军
doaj  

Several Kinds of Matrix Inverse Eigenvalue Problem [PDF]

open access: yes, 2009
矩阵逆特征值问题的研究领域非常广泛,主要来自于离散的数学物理反问题、控制设计、系统参数识别、地震断层成像技术、主成分分析与勘测、遥感技术、天线讯号处理、地球物理、分子光谱、粒子物理、结构分析、电路理论、机械系统模拟等许多应用领域.矩阵逆特征值问题的研究内容是:对给定的特征值或特征对,能否构造出所要求的特定类的矩阵及满足一定谱约束的最佳逼近.
吴春红
core  

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