Results 21 to 30 of about 22,344 (169)

Interfacial Electronic Interactions in Hierarchical Heterostructure Electrocatalyst for Energy‐Saving Hydrogen Production at Industrial Current Densities

open access: yesRare Metals, EarlyView.
ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen   +13 more
wiley   +1 more source

Carbon‐Insertion‐Engineered WS2 Hierarchical Heterostructure Enabling Superior Sodium‐Ion Storage

open access: yesRare Metals, EarlyView.
ABSTRACT Tungsten disulfide (WS2) is considered a promising anode material for sodium‐ion batteries (SIBs). However, its practical application is hindered by poor electrical conductivity, large volume changes during cycling, and sluggish ion diffusion kinetics, which lead to unsatisfactory electrochemical performance.
Xiuli Hu   +9 more
wiley   +1 more source

Fermi Surface Structure Revealed by Quantum Oscillations in Half‐Heusler Semimetal LuAuSn

open access: yesRare Metals, EarlyView.
ABSTRACT The Fermi surface structure in the half‐Heusler semimetallic compound LuAuSn was systematically investigated using quantum oscillation studies of high‐quality single crystals and first‐principles calculations. Clear bulk quantum oscillation signals were observed for multiple complementary physical properties, including magnetization, Hall ...
Yue Lu   +12 more
wiley   +1 more source

単相高密度粉体のレオロジー(粉体物理の現状と展望,2006年度後期基礎物理学研究所研究会) [PDF]

open access: yes, 2007
この論文は国立情報学研究所の電子図書館事業により電子化されました。研究会報告ここでは離散要素法シミュレーションによって得られた ...
波多野, 恭弘
core  

彩色多普勒超声检测门静脉、脾静脉血流动力学在肝硬化食管胃底静脉曲张患者中的临床应用研究

open access: yesZhongguo shiyan zhenduanxue, 2023
目的 探讨彩色多普勒超声检测门静脉、脾静脉血流动力学在肝硬化食管胃底静脉曲张患者中的临床应用价值。方法 选取2018年1月-2021年12月于华北理工大学附属医院住院的肝硬化伴食管胃底静脉曲张患者88例为病例组。选择同期住院的肝硬化不伴有食管胃底静脉曲张患者102例为对照组。观察两组患者门静脉、脾静脉血流动力学变化情况。结果 病例组在总横断面表面积、胃左静脉直径、肠系膜上静脉直径高于对照组,在曲张静脉壁厚度低于对照组,差异均有统计学意义 ...
刘水澎, 张国顺
doaj  

Effects of Upstream Disturbances on Supersonic Flowfield with Transverse Injection [PDF]

open access: yes, 2016
Effects of upstream disturbances on a transverse jet into Mach 2 supersonic flow were investigated by using single-time two-point spatial correlations of fluctuating velocities in the flowfield.
升谷, 五郎   +2 more
core   +1 more source

Selective Lithium Deposition Through 3D Copper Collector With Lithiophilic Alloy “Skins” and Curvature Boundaries for Dendrite‐Free Lithium‐Metal Anodes

open access: yesRare Metals, EarlyView.
ABSTRACT Although lithium metal has been regarded as an ideal anode material for high‐energy‐density batteries, its practical applications remain hindered by many serious challenges. Three‐dimensional (3D) porous Cu current collectors demonstrate potential in ensuring uniform Li deposition.
Meng‐Qi Zhu   +7 more
wiley   +1 more source

A numerical study on the mesoscale disturbance in the Lee of an isolated mountain [PDF]

open access: yes, 1998
Thesis (Ph. D. in Science)--University of Tsukuba, (B), no.
Kang Sung-Dae
core  

Oxygen Vacancy Engineering of Ultrafine ZnAl2O4 Nanoparticles as a Robust Protective Layer for Dendrite‐Free and Long‐Lifespan Aqueous Zn Metal Anodes

open access: yesRare Metals, EarlyView.
ABSTRACT Aqueous zinc‐ion batteries (AZIBs) hold great promise for safe and sustainable energy storage, but their commercialization is impeded by severe Zn dendrite growth and interfacial instability. To address these challenges, we propose a defect engineering strategy employing ultrafine ZnAl2O4 (ZAO) nanoparticles (∼5 nm) with oxygen vacancy defects
Yilun Ren   +9 more
wiley   +1 more source

黄土坡面土壤侵蚀中溶质随径流迁移的水动力特性研究

open access: yesShuitu Baochi Xuebao, 2008
通过对比分析坡面水流的水动力参数与径流溶质迁移量间的关系,研究了不同地表状况下黄土坡面土壤溶质随径流迁移的水动力学特性,以求深入了解和认识坡面土壤侵蚀中溶质随径流迁移的本质机理。研究结果表明:不同坡面地表状况下,糙率系数和平均水深之比(n/h)与侵蚀过程中随径流迁移的溶质存在一定的关系,径流溶质Br-平均浓度、径流溶质Br-的平均流失率以及径流溶质Br-的相对流失量均随n/h的增加而减小。径流溶质Br-的平均流失率以及径流溶质Br-的相对流失量与水流水动力学参数n/h具有指数关系。
郭太龙, 王全九
doaj  

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