Results 11 to 20 of about 675,808 (122)

Recent Advances in Piezocatalysis and Piezo‐Photocatalysis in Energy and Environment: Materials, Design, and Applications

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou   +5 more
wiley   +1 more source

Application‐Grade TiAl Single Crystal With Excellent Room‐Temperature Plasticity and Strength Prepared by Seeded Electromagnetic Confinement Directional Solidification

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT In this study, a newly developed seeded electromagnetic confinement directional solidification (EMCDS) technique was employed to fabricate large‐scale TiAl single crystal ingots with a diameter of 32 mm, overcoming the long‐standing size limitations that have hindered their industrial application.
Wei Wang   +9 more
wiley   +1 more source

Pre‐Formation of LiF‐Rich Interfaces on Prelithiated Si/C Anodes for High‐Energy Lithium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Prelithiation is effective for compensating active lithium‐ion (Li+) loss in silicon (Si)‐based battery electrode materials. However, owing to the dynamic growth of the solid electrolyte interface (SEI), capacity fading remains the biggest challenge for the industrialization of Si electrodes.
Wen‐Jie He   +9 more
wiley   +1 more source

中国陆地生态系统固碳效应——中国科学院战略性先导科技专项“应对气候变化的碳收支认证及相关问题”之生态系统固碳任务群研究进展

open access: yes, 2015
气候变化是当前人类生存和发展所面临的共同挑战,受到世界各国人民和政府的高度关注。陆地生态系统固碳被认为是最经济可行和环境友好的减缓大气CO2浓度升高的重要途径之一,因此,如何提高陆地生态系统碳储量及其固碳能力,是近年来全球变化研究的热点领域。2011年,中科院启动了"应对气候变化的碳收支认证及相关问题"的战略性先导科技专项;其中,生态系统固碳任务群在中国森林、灌丛、草地和农田生态系统约16 000个野外样地进行了系统的野外调查 ...
方精云   +4 more
core   +1 more source

Engineering 2D Materials for High‐Current‐Density Electrocatalytic Water Splitting

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Water electrolysis is a key method for sustainable hydrogen production, using water as an abundant resource. However, efficient and stable operation at high current densities remains challenging due to energy losses, catalyst degradation, and limited ion–electron transport.
Tianqi Guan   +8 more
wiley   +1 more source

Ecological Restoration of Rubber Monocultures: Strategies for Biodiversity and Ecosystem Recovery in Tropical Regions 题目:如何将橡胶林恢复为多样森林?

open access: yesIntegrative Conservation, Volume 4, Issue 3, Page 345-353, September 2025.
Restoration of monoculture in protected and marginal areas can be organized into two phases (1) identification and prioritization of restoration sites based on remote sensing or field survey then assessing degradation level, and (2) implementation of appropriate restoration interventions.
Liang Song   +9 more
wiley   +1 more source

Recent progress of direct ammonia fuel cells: from materials to transportation applications

open access: yesRare Metals, Volume 44, Issue 6, Page 3686-3708, June 2025.
Graphical Abstract AbstractAmmonia is a promising zero‐carbon alternative fuel. Direct ammonia fuel cells (DAFCs), as an efficient ammonia‐fueled power system, have an extremely high application value in the field of transportation for decarbonization.
Yi Huang   +8 more
wiley   +1 more source

导弹水下潜射过程的流体—固体耦合仿真

open access: yes, 2008
导弹潜射是集高速流动、冲击、结构响应于一体的流体—固体—气体三态非线性耦合复杂过程,是决定潜射导弹发射成败的关键环节。本文应用LS-DYNA显式程序建立了三种包含水体、空气、导弹、发射井和筒盖的多物质耦合ALE网格模型,使用罚函数流体—固体耦合方法对导弹水下无攻角潜射过程进行了数值模拟,给出了弹体质心的轴向加速度、轴向流体阻力及阻力系数、空泡区压力分布。仿真结果表明,模型2的仿真过程与实际导弹潜射过程最为相符。同时总结介绍了LS-DYNA程序中流体—固体耦合计算的相关设定原则和方法 ...
程载斌, 申仲翰, 刘玉标, 刘兆
core   +2 more sources

海南岛东西近岸典型牡蛎礁总碳库储量及其变化评估

open access: yesHaiyang yu huzhao
牡蛎礁是蓝色碳汇的重要组成部分,其通过钙化作用、生物同化作用以及生物沉积作用等来完成对碳的封存,以达到碳中和的目的。目前我国关于热带天然牡蛎礁碳库储量的研究较少。文章评估了海南岛近岸4处典型天然牡蛎礁(文昌龙楼、文昌会文、昌江昌化和儋州海头)的碳库储量,并分析了其时空变化特征及其原因。结果表明,4处礁区的现存总碳库储量为18 734.6 t C,长期总碳库储量为16 883.08 t C。其中海头、昌化、龙楼和会文的现存碳库储量及单位面积平均碳库储量分别为15 923.42 t C (3.46 kg C/
施 凯   +6 more
doaj   +1 more source

固体力学 [PDF]

open access: yes, 2008
固体力学を連続体力学の立場から講義する。すなわち、連続体力学を理解するための数学的準備をした上で、ひずみと応力の概念を説明し、それらに関する場の方程式を導く。2015.03.02ファイル追加learning ...
田中, 英一
core  

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