期刊文献+
共找到7篇文章
< 1 >
每页显示 20 50 100
Effect of temperature and time on the precipitation ofκ-carbides in Fe-28Mn-10Al-0.8C low-density steels:Aging mechanism and its impact on material properties 被引量:1
1
作者 yulin gao Min Zhang +3 位作者 Rui Wang Xinxin Zhang Zhunli Tan Xiaoyu Chong 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2024年第10期2189-2198,共10页
In low-density steel,κ-carbides primarily precipitate in the form of nanoscale particles within austenite grains.However,their precipitation within ferrite matrix grains has not been comprehensively explored,and the ... In low-density steel,κ-carbides primarily precipitate in the form of nanoscale particles within austenite grains.However,their precipitation within ferrite matrix grains has not been comprehensively explored,and the second-phase evolution mechanism during aging remains unclear.In this study,the crystallographic characteristics and morphological evolution ofκ-carbides in Fe-28Mn-10Al-0.8C(wt%)low-density steel at different aging temperatures and times and the impacts of these changes on the steels’microhardness and properties were comprehensively analyzed.Under different heat treatment conditions,intragranularκ-carbides exhibited various morpho-logical and crystallographic characteristics,such as acicular,spherical,and short rod-like shapes.At the initial stage of aging,acicularκ-carbides primarily precipitated,accompanied by a few spherical carbides.κ-Carbides grew and coarsened with aging time,the spherical carbides were considerably reduced,and rod-like carbides coarsened.Vickers hardness testing demonstrated that the material’s hardness was affected by the volume fraction,morphology,and size ofκ-carbides.Extended aging at higher temperatures led to an increase in carbide size and volume fraction,resulting in a gradual rise in hardness.During deformation,the primary mechanisms for strengthening were dislocation strengthening and second-phase strengthening.Based on these findings,potential strategies for improving material strength are proposed. 展开更多
关键词 low-density steel κ-carbide solution-aging treatment HARDNESS
下载PDF
High-Energy Batteries:Beyond Lithium-Ion and Their Long Road to Commercialisation 被引量:17
2
作者 yulin gao Zhenghui Pan +2 位作者 Jianguo Sun Zhaolin Liu John Wang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2022年第6期116-164,共49页
Rechargeable batteries of high energy density and overall performance are becoming a critically important technology in the rapidly changing society of the twenty-first century.While lithium-ion batteries have so far ... Rechargeable batteries of high energy density and overall performance are becoming a critically important technology in the rapidly changing society of the twenty-first century.While lithium-ion batteries have so far been the dominant choice,numerous emerging applications call for higher capacity,better safety and lower costs while maintaining sufficient cyclability.The design space for potentially better alternatives is extremely large,with numerous new chemistries and architectures being simultaneously explored.These include other insertion ions(e.g.sodium and numerous multivalent ions),conversion electrode materials(e.g.silicon,metallic anodes,halides and chalcogens)and aqueous and solid electrolytes.However,each of these potential“beyond lithium-ion”alternatives faces numerous challenges that often lead to very poor cyclability,especially at the commercial cell level,while lithium-ion batteries continue to improve in performance and decrease in cost.This review examines fundamental principles to rationalise these numerous developments,and in each case,a brief overview is given on the advantages,advances,remaining challenges preventing cell-level implementation and the state-of-the-art of the solutions to these challenges.Finally,research and development results obtained in academia are compared to emerging commercial examples,as a commentary on the current and near-future viability of these“beyond lithium-ion”alternatives. 展开更多
关键词 High energy density Beyond lithium-ion batteries Multivalent-ion batteries Conversion electrode materials ELECTROLYTE
下载PDF
The new kid on the block in insect pest management:sprayable RNAi goes commercial 被引量:2
3
作者 Junjie Yan Ralf Nauen +14 位作者 Stuart Reitz Andrei Alyokhin Jiang Zhang David Mota-Sanchez Yonggyun Kim Subba Reddy Palli Silvia I.Rondon Brian A.Nault Juan Luis Jurat-Fuentes Michael S.Crossley William E.Snyder Angharad M.R.Gatehouse Myron P.Zalucki Bruce E.Tabashnik yulin gao 《Science China(Life Sciences)》 SCIE CAS CSCD 2024年第8期1766-1768,共3页
Insect pest damage to crops is a threat to global food security(Tilman et al.,2011).Climate change,the evolution of insecticide resistance,and the phasing out of insecticides due to environmental and safety concerns e... Insect pest damage to crops is a threat to global food security(Tilman et al.,2011).Climate change,the evolution of insecticide resistance,and the phasing out of insecticides due to environmental and safety concerns exacerbate this problem.Farmers urgently need safe and effective crop protection tools to sustainably generate yields that meet ever-increasing global demand. 展开更多
关键词 CROPS damage PEST
原文传递
Frameworked electrolytes:Ionic transport behavior and high mobility for solid state batteries
4
作者 Jianguo Sun Hao Yuan +7 位作者 Jing Yang Tuo Wang yulin gao Qi Zhao Ximeng Liu Haimei Wang Yong-Wei Zhang John Wang 《InfoMat》 SCIE CSCD 2024年第2期76-89,共14页
All solid-state batteries(ASSBs)are the holy grails of rechargeable batteries,where extensive searches are ongoing in the pursuit of ideal solid-state electrolytes.Nevertheless,there is still a long way off to the sat... All solid-state batteries(ASSBs)are the holy grails of rechargeable batteries,where extensive searches are ongoing in the pursuit of ideal solid-state electrolytes.Nevertheless,there is still a long way off to the satisfactorily high(enough)ionic conductivity,long-term stability and especially being able to form compatible interfaces with the solid electrodes.Herein,we have explored ionic transport behavior and high mobility in the sub-nano pore networks in the framework structures.Macroscopically,the frameworked electrolyte behaves as a solid,and however in the(sub)-nano scales,the very limited number of solvent molecules in confinement makes them completely different from that in liquid electrolyte.Differentiated from a liquid-electrolyte counterpart,the interactions between the mobile ions and surrounding molecules are subject to dramatic changes,leading to a high ionic conductivity at room temperature with a low activation energy.Li+ions in the sub-nano cages of the network structure are highly mobile and diffuse rather independently,where the rate-limiting step of ions crossing cages is driven by the local concentration gradient and the electrostatic interactions between Li^(+)ions.This new class of frameworked electrolytes(FEs)with both high ionic conductivity and desirable interface with solid electrodes are demonstrated to work with Li-ion batteries,where the ASSB with LiFePO_(4)shows a highly stable electrochemical performance of over 450 cycles at 2℃ at room temperature,with an almost negligible capacity fade of 0.03‰ each cycle.In addition,the FE shows outstanding flexibility and anti-flammability,which are among the key requirements of large-scale applications. 展开更多
关键词 frameworked electrolyte macroscopically solid with 3D ionic channels in sub-nano-scales solid-state battery space confinement of Li ions
原文传递
Will lithium-sulfur batteries be the next beyond-lithium ion batteries and even much better? 被引量:6
5
作者 Jianguo Sun Tuo Wang +3 位作者 yulin gao Zhenghui Pan Runpeng Hu John Wang 《InfoMat》 SCIE CAS 2022年第9期1-16,共16页
Lithium-ion batteries(LIBs)are undoubtedly the current working-horse in almost all portable electronic devices,electric vehicles,and even large-scale stationary energy storage.Given the problems faced by LIBs,a big qu... Lithium-ion batteries(LIBs)are undoubtedly the current working-horse in almost all portable electronic devices,electric vehicles,and even large-scale stationary energy storage.Given the problems faced by LIBs,a big question arises as to which battery(ies)would be the“Beyond LIBs”batteries.Among the front-runners,lithium-sulfur batteries(LSBs)have been extensively pursued owing to their intrinsically high energy density and extremely low cost.Despite the steady and sometimes exciting progress reported on sulfur chemistry and cell performance at laboratory scales over the past decade,one of the major bottlenecks is the poor cyclability.In this perspective,we examine the key challenges and opportunities faced by LSBs,as well as approaches at the materials,electrode/electrolyte and cell integration levels that can be taken to transform LSBs from a front-runner to a real leading champion in the pursuit of the“Beyond LIBs”.While the key new mechanistic insights are very important,we propose a set of the near-future research directions for both the liquid and solid state LSBs,where the currently on-going parallel pursuits of both liquid and solid LSBs will be converging.The“liquid current”will gradually be taken over by“solid future”in the expected LSBs commercialization in the coming decade. 展开更多
关键词 electrocatalysis lithium-sulfur batteries solid and liquid electrolytes sulfur chemistry
原文传递
Software approaches for resilience of high performance computing systems:a survey 被引量:1
6
作者 Jie JIA Yi LIU +2 位作者 Guozhen ZHANG yulin gao Depei QIAN 《Frontiers of Computer Science》 SCIE EI CSCD 2023年第4期43-56,共14页
With the scaling up of high-performance computing systems in recent years,their reliability has been descending continuously.Therefore,system resilience has been regarded as one of the critical challenges for large-sc... With the scaling up of high-performance computing systems in recent years,their reliability has been descending continuously.Therefore,system resilience has been regarded as one of the critical challenges for large-scale HPC systems.Various techniques and systems have been proposed to ensure the correct execution and completion of parallel programs.This paper provides a comprehensive survey of existing software resilience approaches.Firstly,a classification of software resilience approaches is presented;then we introduce major approaches and techniques,including checkpointing,replication,soft error resilience,algorithmbased fault tolerance,fault detection and prediction.In addition,challenges exposed by system-scale and heterogeneous architecture are also discussed. 展开更多
关键词 RESILIENCE high-performance computing fault tolerance CHALLENGE
原文传递
Haplotype-resolved and chromosome-level genome assembly of Colorado potato beetle
7
作者 Ziqi Ye Ruirui Lu +10 位作者 Chao Li Doudou Yang Zhuozhen Zeng Weichao Lin Jie Cheng Zhongmin Yang Li Wang yulin gao Sanwen Huang Xingtan Zhang Suhua Li 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2023年第7期532-535,共4页
As the most important non-cereal food crop,potatoes are a staple food for 1.3 billion people(Stokstad,2019).However,these cultivated potatoes are challenged with multiple biotic stresses(i.e.,pathogens and pests),some... As the most important non-cereal food crop,potatoes are a staple food for 1.3 billion people(Stokstad,2019).However,these cultivated potatoes are challenged with multiple biotic stresses(i.e.,pathogens and pests),some of which can evade host resistance,leading to a serious dampening of potato yield.One of these pests is the Colorado potato beetle(hereafter referred to as CPB,Leptinotarsa decemlineata Say).CPB is a member of the order Coleoptera,and originated in the southwestern United States and Mexico(Alyokhin et al.,2008). 展开更多
关键词 originated hereafter
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部