Results 51 to 60 of about 8,218 (174)

Manipulating Terminal Bonds of Ti3C2Tx MXene for Highly Efficient Microwave Absorption and Photothermal Conversion

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT MXenes have been widely investigated as microwave absorption (MA) materials because of their unique properties. This study introduces a terminal bond manipulation strategy to enhance charge transfer and polarization in Ti3C2Tx, optimizing its MA performance.
Xiang Fang   +8 more
wiley   +1 more source

Enhancing Oxygen Evolution Reaction Activity in NiCo2O4 Catalysts Through Morphology and Oxygen Vacancy Engineering

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Developing oxygen evolution reaction (OER) catalysts that combine high performance with cost‐effectiveness is a critical challenge for advancing the commercialization of anion exchange membrane water electrolysis (AEMWE). Practical application is often hindered by issues such as poor batch reproducibility and low‐cost efficiency.
Chuang Zhang   +9 more
wiley   +1 more source

Designed and Implementation of Rolling Resistance Test System [PDF]

open access: yes, 2015
轮胎滚动阻力的测试对于轮胎生产企业以及汽车、摩托车、电动车、轮椅车以及自行车等生产企业来说具有非常重要的意义。本课题设计的是一种基于单片机的滚动阻力测试系统,通过机械结构把滚动阻力转化成重力,再通过称重传感器把重力信号转换成电信号,由单片机进行处理,和上位机通信。从而实现轮胎滚动阻力的测试以及数据分析等等。 本系统集多种测试功能于一体,操作简单、效率高,系统功耗低、使用方便、测量准确性好、重复性好、使用寿命长。在实现基于单片机的滚动阻力测量的基础上,扩展了数据采集,实时监控测试过程,绘制测试波形 ...
苏远锋
core  

Pyrolysis‐Engineered Fe/Mn‐ZIF Catalysts: Balancing Activity, Selectivity, and Stability for the Oxygen Reduction Reaction

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Metal oxide‐based catalysts for oxygen reduction reaction (ORR) have drawn great attention in recent years. However, it remains technically challenging for the precise regulation of the overall performance due to the trade‐off effect among the activity, selectivity, and stability of electrocatalysts. Herein, a balancing strategy to control the
Haoran Ma   +7 more
wiley   +1 more source

基于热电耦合方法的800 kV GIS隔离开关温度场仿真研究

open access: yesGaoya dianqi, 2020
温升是GIS设备的重要考核指标之一,温升过高会导致设备发热严重,进而影响GIS运行的可靠性。为准确分析GIS的发热和温升,基于有限元分析软件,通过热电耦合方法,建立800 kV GIS隔离开关损耗发热的求解模型,在综合考虑导体及外壳不同的散热系数、环境温度和材料电阻率随温度变化等多种因素的基础上,计算分析隔离开关的整体温度场分布。通过温升试验,对比主要部位温升的计算值和试验值,证明了该方法的准确性,为隔离开关的设计提供了参考。
李伟   +4 more
doaj  

The contribution of ammonia-oxidizing archaea to primary production in the South China Sea [PDF]

open access: yes, 2016
海洋初级生产力是供养和维持海洋巨大生物资源的物质基础,同时能够通过驱使大气CO2向海洋转移,来实现对全球气候变化的调节作用,因此加深对海洋初级生产力的认识将有助于我们对海洋生态系统、海洋生物地球化学循环及全球变化等问题的认识。然而目前关于初级生产力的研究主要集中在真光层,而对于占海洋水体近75%的真光层以下水体的研究则严重落后。另一方面,奇古菌作为古菌的突出代表,既具有海洋中分布的广泛性与高丰度的特点,同时还具有自养碳固定和氨氧化的功能,使得它在海洋碳、氮生物地球化学循环中扮演着重要的角色。因此 ...
李皓
core  

Construction of CoP/Mn2P Heterojunctions via One‐Step Phosphorization Coupled With Hollow Hard Carbon Spheres as Supports: Enabling Ultrastable Long‐Cycle Sodium‐Ion Anodes Over a Wide Temperature Range

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Driven by global energy transition and sustainability, sodium‐ion batteries (SIBs) have emerged as key alternatives to lithium‐ion batteries for low‐to‐medium energy storage, because of abundant sodium resources and low cost. However, their commercialization is hindered by the lack of anodes with high capacity, fast kinetics, and long‐term ...
Shuang‐Lin Cai   +13 more
wiley   +1 more source

甘孜地热发电热力计算及优化 [PDF]

open access: yes, 2016
A geothermal well in Ganzi was chosen for the study. To provide a reference for the design and construc?tion of a geothermal plant, power generation techniques were selected and the thermodynamic process was calculat?ed based on cold and heat source ...
卜宪标   +3 more
core  

Tailoring Differentiated Multiscale Microstructure to Enhance the Mechanical Properties of Additively Manufactured AlCoFeNi2 at Room and High Temperatures via Annealing

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Additively manufactured AlCoFeNi series eutectic high‐entropy alloys (EHEAs) exhibit nonequilibrium dual‐phase microstructure in the as‐printed state, allowing them to be easily tailored through annealing to explore their strength–toughness potential.
Huidong Wu   +13 more
wiley   +1 more source

Constitutive model and dynamic deformation behavior of 800 MPa grade cold-rolled dual phase steel [PDF]

open access: yes, 2016
The Hopkinson experiment system was used to do the dynamic tensile experiment of 800 MPa grade cold rolled dual phase steel (DP800). The strain rate was determined as 500, 1000 and 2250 s-1 By comparing the experimental results, both the yield strength ...
CAI Heng-jun   +3 more
core   +1 more source

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