Results 31 to 40 of about 11,630 (162)

Atomic Synergy of Vacancy‐Engineered Layered Double Hydroxide/Heteroatom‐Doped Carbon Quantum Dots for Bifunctional Oxygen Electrocatalysis in Zn–Air Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Low conductivity and poor oxygen reduction reaction (ORR) catalytic activity limit the bifunctional catalytic performance of layered double hydroxide (LDH) in zinc–air batteries. In this work, an efficient bifunctional electrocatalyst was prepared by loading nitrogen and phosphorus co‐doped carbon quantum dots (NPCQDs) onto a cationic‐vacancy ...
Wenhao Tang   +4 more
wiley   +1 more source

坡面径流侵蚀产沙机理试验研究

open access: yesShuitu Baochi Xuebao, 2011
利用野外模拟降雨试验,分析不同植被条件覆盖下坡面降雨入渗产流和侵蚀产沙过程特征及其互作关系,阐明不同植被类型对坡面降雨侵蚀产沙过程的调控机理及其差异。结果表明:荒地、草地和坡耕地坡面产流产沙过程线均较林地的强烈,呈现出多峰多谷的特点,产沙过程较产流过程波动更为剧烈;坡面累计产沙量随累计径流量增加呈幂函数显著递增趋势,坡面侵蚀产沙过程表现为发育期、活跃期和稳定期3个阶段。在水沙调控方式上,林地主要通过植被根系削减侵蚀动力、增加入渗、削减径流及减缓流速等途径实现水沙调控,具有蓄水减沙的水土保持功效 ...
朱智勇   +3 more
doaj  

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

High Performance Catalyst Design by Artificial Intelligence for Acetylene Hydrochlorination

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT The rapid development of artificial intelligence (AI) has brought transformative contributions to society, revolutionizing various fields through its advanced computational capabilities and data‐driven approaches. In the field of materials science, AI has become a powerful tool that significantly accelerates the discovery of new materials by ...
Yuan Zhou   +12 more
wiley   +1 more source

江苏省沿海平原沙土区典型河沟边坡土壤侵蚀试验研究

open access: yesShuitu Baochi Xuebao, 2022
为探明江苏省沿海平原沙土区河沟边坡土壤侵蚀过程并建立预测模型,在4个坡度和2个雨强条件下,对江苏省沿海平原沙土区典型河沟边坡土壤开展人工模拟溅蚀试验和微区模拟降雨试验,了解河沟边坡土壤溅蚀特征,明确河沟边坡产流产沙过程,并利用传递函数方法分别建立了溅蚀率、产流强度和产沙强度的估算模型。结果表明:(1)河沟边坡土壤溅蚀率随降雨强度及坡度的增大而增加,土壤溅蚀率与降雨强度和坡度之间呈线性关系;(2)河沟边坡的产流过程总体上呈现出先增大后波动稳定的趋势,产流强度随着坡度的增大而减小 ...
曲丽莉   +8 more
doaj  

In Situ Uniform Lithium Enrichment for Dense, High‐Performance LLZO Solid Electrolytes

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT A major challenge in garnet‐type Li7La3Zr2O12 (LLZO) system all‐solid‐state electrolytes is the high porosity that typically remains after sintering, which compromises ionic conductivity and degrades battery cycling performance. To address this, we propose an innovative strategy to achieve uniform lithium enrichment on the surface of ...
Yi‐Yang Xiao   +8 more
wiley   +1 more source

红壤丘陵区坡地降雨壤中流产流过程试验研究

open access: yesShuitu Baochi Xuebao, 2007
在红壤丘陵区,对自然降雨条件下坡地(上层0~40cm,下层40~110cm)降雨壤中流产流过程进行了研究,结果表明:不同土地利用方式下,油茶林壤中流产流量大于同层恢复区;壤中流峰值流量恢复区大于同层油茶林;油茶林壤中流产流过程较恢复区开始早、结束晚。随着土层加深,滞后时间延长。同一土地利用方式下,产流量、峰值流量、滞后和拖尾均为上层小于下层。壤中流对降雨及地表径流的响应均为上层快于下层。不同的降雨类型,壤中流产流机理不同。峰值型降雨壤中流产流过程滞后时间较小,壤中流产流类型多为驱赶流。
王峰, 沈阿林, 陈洪松, 陈家宙
doaj  

复合侵蚀作用下砒砂岩坡面产流产沙过程试验

open access: yesShuitu Baochi Xuebao, 2020
通过模拟室内风力、水力、冻融条件,进行单一水蚀、冻融+水蚀、冻融+风蚀+水蚀3种营力组合试验,揭示了复合侵蚀条件下的砒砂岩产流产沙变化规律。结果表明:(1)相同降雨条件下,冻融+水蚀、冻融+风蚀+水蚀试验的径流量均为水蚀试验的1.2倍,产沙量分别为水蚀试验的2.4,2.8倍。冻融能够增大砒砂岩产流产沙量,风蚀对增加侵蚀产沙量的作用较小。(2)砒砂岩产流产沙过程的峰值及变幅随营力种类的增多而增大,单一水蚀的产流产沙过程相较于复合营力作用下的水沙过程具有显著的坦化特征。(3)复合侵蚀作用使初始入渗率增加 ...
卫午毓   +4 more
doaj  

雨滴打击与壤中流交互作用对横坡垄作坡面侵蚀过程的影响

open access: yesShuitu Baochi Xuebao, 2021
横坡垄作是被广泛采用的保护性耕作措施之一。垄沟低洼处的积水可诱发壤中流,并可造成雨滴打击对土壤颗粒分离/搬运的增强与减弱作用并存。因此,横坡垄作坡面雨滴打击与壤中流交互作用对土壤侵蚀过程的影响有别于传统坡面。基于人工模拟降雨试验,对有/无雨滴打击作用(RI,WRI)自由入渗(FD)和壤中流(SP)2种试验处理下的产流、产沙过程进行了探究。结果表明:(1)径流量表现为SP+WRI > SP+RI > FD+RI > FD+WRI。雨滴打击作用和壤中流对径流的贡献分别为-47.09%~54.37%和41 ...
安娟   +4 more
doaj  

Micro‐Macro Regulation Through Co‐Intercalation of Inorganic–Organic for the V2O5·nH2O Cathode Toward High‐Performance Aqueous Zinc‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Vanadium oxides are deemed competitive cathode candidates for aqueous zinc‐ion batteries (AZIBs), benefited from their high theoretical capacity and multiple crystalline structures. However, the sluggish reaction kinetics, poor reversibility, and high solubility have hindered the practical application.
Xiaoyu Fan   +7 more
wiley   +1 more source

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