Results 21 to 30 of about 9,136 (119)

Engineering Stress‐Decoupled SnP2O7@Carbon Core Shell via Spatial Confinement for Cycling‐Stable Sodium Storage

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Tin‐based composite oxides typically undergo severe volume variations and exhibit poor intrinsic conductivities despite their high theoretical capacity as promising anode candidates for sodium‐ion batteries. This results in rapid structural degradation and capacity fading upon cycling.
Yongmei Sun   +5 more
wiley   +1 more source

Ten rules for using evidence to guide ecosystem restoration

open access: yesJournal of Applied Ecology, Volume 63, Issue 9, September 2026.
These 10 rules provide a guidance framework to put into action the best available evidence, ensuring that restoration benefits people and nature. We highlight the importance of knowledge brokering systems in this process, effectively informed and empowered to fulfil their emerging role across existing institutions and new ones dedicated to Science ...
Rafael B. Chaves   +12 more
wiley   +1 more source

Navier-Stokes方程基于H(div)型有限元的涡旋黏性法

open access: yes四川大学学报. 自然科学版, 2012
作者将涡旋黏性思想和H(div)型有限元逼近(比如RT元和BDM元)相结合,对不可压缩定常Navier-Stokes方程提出了一种新的稳定化有限元格式.该格式不仅满足守恒条件,而且用涡旋黏性项克服了对流占优.然后作者进一步证明了有限元解的存在唯一性,给出了误差估计,并计论了H(div)型有限元的应用.
唐金波, 冯民富
doaj  

Rethinking law in books versus law in action in China's first experiment of a personal insolvency regime: Towards a more debtor‐oriented procedural design

open access: yesInternational Insolvency Review, Volume 35, Issue 2, Page 406-435, Summer 2026.
Abstract Although a local experiment, the promulgation of the Regulations of Shenzhen Special Economic Zone on Personal Bankruptcy (SPBR) in 2020 was hailed as a significant milestone in China's insolvency lawmaking which has thus far addressed only corporate insolvencies.
Jenny Fu, Jin Chun
wiley   +1 more source

电力机车主变压器油箱损耗的三维有限元分析

open access: yesGaoya dianqi, 2005
利用基于边单元的有限元法,对一台200km/h高速电力机车主变压器的油箱损耗进行了三维有限元分析和计算。由于电力机车主变压器是高漏抗,多绕组变压器,经试验(采用放大法)得到该台变压器油箱损耗为31.245kW,使用FEM二维有限元分析法计算结果为45.791kW,而采用三维有限元分析法计算结果为30.478kW。从而表明,采用三维有限元分析能够更加准确地计算主变压器油箱的涡流分布和杂散损耗,为其采取有效的屏蔽措施提供了更加可靠的科学依据。
李季, 罗隆福, 许加柱
doaj  

Alloy‐Type Anode Materials for Sodium‐Ion Batteries: From Single Metals to MultiComponent Alloys

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Sodium‐ion batteries (SIBs) are widely regarded as a promising alternative to lithium‐ion batteries due to their abundant sodium resources, broad geographical distribution, and low cost, rendering them particularly attractive for large‐scale energy storage applications.
Zicheng Yin   +12 more
wiley   +1 more source

Synergetic Ruthenium Clusters and Ligand Motifs in Insoluble Polyoxometalates for Efficient Urea Electrosynthesis

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT The electrocatalytic co‐reduction of CO2 and nitrate (NO3− ${\text{NO}}_{3}^{-}$) to synthesize urea presents a sustainable alternative to traditional industrial processes, yet its efficiency is fundamentally limited by the kinetically mismatched activation and coupling of CO2 and NO3− ${\text{NO}}_{3}^{-}$.
Jiayu Liu   +9 more
wiley   +1 more source

两种不同有限元模型的拉索弯曲性能

open access: yesJianzhu Gangjiegou Jinzhan, 2019
由于拉索内部的力学性能比较复杂,采用有限元方法进行拉索分析。对于钢绞线的有限元模型,目前多采用Solid164单元来进行建模,而对于半平行钢丝束拉索的有限元模型,目前多采用Pipe16单元来进行建模。该模型的特点是由短梁单元和弹簧单元组成。分别采用Pipe16单元和Solid164单元来建立拉索模型,分析了两种有限元模型的弯曲荷载-挠度曲线和拉索的有效弯曲刚度,并与试验数据进行了对比分析。结果表明,对于无预应力条件下,Pipe16单元的模型结果与试验数值误差比Solid164模型的要大 ...
马红旭   +3 more
doaj  

Low‐Threshold and Broad‐Wavelength‐Tunable CsPbClxBr3‐x/SiO2/Ag Hybrid Cavity Plasmonic Nanolaser Operated at Room Temperature

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Precise and controllable laser wavelength modulation over a broad spectral range in nanoscale devices is pivotal for advancing next‐generation optoelectronic technologies. Herein, we synthesized high‐quality CsPbBr3 nanowires (NWs) via the anti‐solvent method and constructed a CsPbBr3/SiO2/Ag hybrid structure, demonstrating both photonic and ...
Yizun Zhou   +10 more
wiley   +1 more source

国外期刊论文简介

open access: yesJianzhu Gangjiegou Jinzhan, 2010
<正>高层建筑连续性倒塌分析的三维有限元仿真Feng Fu(英国)采用通用有限元软件ABAQUS建立了一个20层建筑的三维有限元模型并对该建筑进行了连续性倒塌分析 ...
王卫永
doaj  

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