Results 21 to 30 of about 8,667 (119)
Gallium‐Doped α‐MnO2 Cathode for High‐Performance Aqueous Zinc‐Ion Batteries
ABSTRACT Rechargeable aqueous zinc‐ion batteries (ZIBs) have received significant attention because of their high safety and low cost. MnO2 as a cathode material hampers the application of ZIBs due to its structural instability and dissolution during the operation of the battery.
Wen‐yu Xu +13 more
wiley +1 more source
Delays and Barriers to Cancer Care in Low‐ and Middle‐Income Countries: A Systematic Review
Abstract Background Advanced stage presentation of patients with is common in low‐ and middle‐income countries (LMICs). A comprehensive analysis of existing delays and barriers in LMICs has not been previously reported. We conducted a systematic literature review to comprehensively outline delays and barriers to identify targets for future ...
Nathan R. Brand +3 more
wiley +1 more source
A Mini Review of Scientific Designs of Dynamic Responsive Fluids in Battery Technologies
ABSTRACT Dynamic responsive fluids are emerging as transformative elements in the evolution of battery technologies, marking a pivotal shift from static passive designs toward systems that actively sense and adapt to their operating environments. By integrating dynamic responsive fluids, batteries can interact with both internal and external stimuli in
Xiu‐Zhen Yang +11 more
wiley +1 more source
ABSTRACT Existing literature largely agrees that authoritarian regimes establish channels for political participation to gather valuable information on citizens' anti‐regime sentiments and policy preferences and to supervise lower‐level bureaucrats and firms.
Anton Bogs
wiley +1 more source
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
特高压直流输电工程单极大地运行时产生的地表电位分布对交流系统存在不利影响,为确保其安全稳定运行。文中对特高压直流接地极周边实际的土壤分布情况进行建模,采用行波法与镜像法对周边地表电位的分布进行计算。在MATLAB编写计算程序,比较水平分层和复合高山土壤模型地表电位分布规律;同时通过改变复合高山土壤模型参数,分析研究影响地表电位的敏感性参数。研究表明,以复合高山土壤模型计算地表电位后得到的电流分布基本与实测电流值相符;在距离直流接地极较近的复合高山土壤模型中浅层土壤厚度与电阻率 ...
耿山, 樊艳芳, 巩晓玲, 林雪峰
doaj
城市变电站附近部分公路的路基会采用埋设钢筋网格的方式,这些金属路基会改变临近变电站的接地阻抗和附近的地表电位分布,并对变电站接地阻抗的测量产生影响。文中建立了公路路基导体存在条件下,临近城市变电站的接地阻抗计算模型,并在此基础上,建立了接地阻抗测量的仿真模型,计算了不同影响因素下,用夹角法测量变电站接地阻抗的测量误差。结果表明,在一定土壤条件下路基导体对变电站理论接地阻抗的影响可达31%;在距离路基边界20 m范围内,路基导体对公路沿线地表电位升的影响可达80%;推荐在实际测量时 ...
王邹俊 +6 more
doaj
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
HVDC接地极极址选择、布置形式和地表电位的分布在很大程度上取决于土壤结构模型,对分析HVDC输电系统单极运行时交流网络受到的影响也有重要作用。笔者利用CDEGS软件对HVDC系统及交流输电网络进行建模仿真,采用不同的土壤模型,分析研究了直流输电系统以单极大地回线方式运行时,各层土壤参数对地表电位分布的影响。仿真结果表明:直流地表电位因距离接地极的远近而不同,距离接地极越远,直流地表电位绝对值越小,近似呈指数函数形式衰减;直流地表电位数值与土壤厚度近似成反比,而与表层土壤电阻率近似成正比 ...
吴超 +4 more
doaj
我国地震地电场观测时的漏电干扰问题会影响到观测质量和地震监测效能。针对这一实际问题,本文提出了点源干扰源定位方法。该方法首先建立地表点源对地电场观测影响模型,根据模型计算点源对地电场观测的干扰幅度,然后求解干扰源相对于中心电极的位置。将定位方法应用于高邮地震台和汉王地震台实际干扰源排查工作中,定位结果与实际干扰源位置基本一致,测区外干扰源定位误差小于2%,测区内干扰源定位误差小于20 m,并对影响计算误差的因素进行了分析。两个台站的实际应用表明 ...
Yu Zhang +4 more
doaj +1 more source

