Results 21 to 30 of about 9,317 (122)

Yttrium Addition Co‐Enhances the Plasticity and Corrosion Resistance of TiB2‐Refined Al‐Mg‐Zn Alloys

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT To address the degradation of corrosion resistance induced by Al‐5Ti‐B grain refiner during the strengthening of Al‐Mg‐Zn alloys, this study innovatively employed a rare earth element yttrium (Y) alloying strategy to achieve synergistic enhancement of mechanical strength and corrosion resistance.
Wen‐Tao Qin   +9 more
wiley   +1 more source

Gallium‐Doped α‐MnO2 Cathode for High‐Performance Aqueous Zinc‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
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

A Mini Review of Scientific Designs of Dynamic Responsive Fluids in Battery Technologies

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
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

基于环状回流极的接地模拟试验平台测量研究

open access: yesDianci bileiqi, 2023
由环状回流极构成的接地模拟试验回路具有回路电阻小、散流路径合理的优点,在接地模拟试验中得到了广泛应用。然而回流极的引入会导致地中电位分布发生畸变,进而影响到接地电阻的准确测量。因此笔者从理论角度对接地模拟试验平台地中电位分布特征进行了研究,结果表明回流极的引入会拉低接地装置的地电位升、回流极与接地装置之间会产生零电位参考点、无法根据接地电阻定义得出准确接地电阻值;基于二端口理论推导得出了接地装置接地电阻的修正公式;采用CDEGS仿真软件将不同尺寸 ...
魏洪志   +5 more
doaj  

Participation Disenchants: How Online Political Participation Decreases Online Political Efficacy in China

open access: yesRegulation &Governance, Volume 20, Issue 1, Page 35-63, January 2026.
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

线源三维井地电法异常边界增强及地形校正技术

open access: yesDizhen xuebao, 2023
基于非结构网格有限元方法开展了三维复杂地电模型的线源井地电法的高效正演模拟研究,探讨了通过求取电场响应导数来刻画目标体边界范围、采用差异场地形校正技术来消除地形影响等措施对井地电法成像的效果和精度的影响。并通过对比与解析解,验证了本文数值解算法的有效性。模型计算结果表明:积水巷道的空间位置和走向均会引起视电阻率的显著变化,视电阻率变化率的极值准确且清晰地指示了巷道边界的位置;电位的归一化总水平导数极大地提高了井地电法对目标体复杂边界位置的识别能力;地形对井地电场分布的影响也很大 ...
Zhitao Xiong   +4 more
doaj   +1 more source

Predicting Spatial Distributions of Mammalian Predation on Translocated Wild Turkeys in Agriculturally Dominated Landscapes 在以农业为主的景观中哺乳动物对易地放归的野生火鸡捕食的空间分布预测

open access: yesWildlife Letters, Volume 3, Issue 3, Page 91-98, September 2025.
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

点源干扰源定位方法及其在地电场观测中的实际应用

open access: yesDizhen xuebao
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

公路路基导体对城市变电站接地阻抗及其测量的影响

open access: yesDianci bileiqi, 2021
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  

Effective polysulfides regulation in high‐performance Li–S batteries via novel VO2–VS2 heterostructure

open access: yesRare Metals, Volume 44, Issue 6, Page 3772-3783, June 2025.
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

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