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Effects of carbon content on the microstructure and tensile properties of a low-density steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 391-401页

作者： Yongxuan Shang Mingyu fan Shuyong jiang Zhongwu Zhang Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China State Key Laboratory of Metal Material for Marine Equipment and Application Iron&Steel Research Institute of Ansteel Group CorporationAnshan 114009China

Carbon can change the phase components of low-density steels and influence the mechanical *** this study,a new method to control the carbon content and avoid the formation ofδ-ferrite by decarburization treatment was *** microstructural changes and mechanical characteristics with carbon content induced by decarburization were systematically ***-Jaoul(C-J)analysis was employed to examine the work hardening characteristics during the tensile *** decarburization by heat treatments,the carbon content within the austenite phase decreased,while Mn and Al were almost unchanged;this made the steel with full austenite transform into the austenite and ferrite dual ***,(Ti,V)C carbides existed in both matrix phase and the mole fraction almost the *** addition,the formation of other carbides *** loss induced a decrease in strength due to the weakening of the carbon solid *** the steel with the single austinite,the deformation mode of austenite was the dislocation planar glide,resulting in the formation of *** the dual-phase steel,the deformation occurred by the dislocation planar glide of austenite first,with the increase in strain,the cross slip of ferrite took place,forming dislocation cells in *** the late stage of deformation,the work hardening of austinite increased rapidly,while that of ferrite increased slightly.

关键词： low-density steels carbon content decarburization strengthening mechanisms work hardening behavior

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住宅建筑电气设计中一些电气设置的探讨

现代建筑电气 2018年第9期9卷 41-44页

作者：郑云德中国华西企业股份有限公司安装工程公司四川成都610081

从电源插座和照明开关的设置、剩余电流动作保护器参数的选择以及家用火灾探测器的设置等方面探讨了住宅建筑电气设计中一些电气设置,以便更好地满足用户的用电需求,同时保障用电安全。

关键词：剩余电流动作保护器照明开关插座家用火灾探测器局部等电位联结

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减数分裂染色体的行为及其分子基础

中国科学：生命科学 2017年第1期47卷 16-25页

作者：蒋涵玮李涛樊岁兴江小华史庆华中国科学技术大学生命科学学院合肥微尺度物质科学国家实验室合肥230027 复旦大学遗传与发育协同创新中心上海200438

减数分裂是有性生殖生物配子产生的必需过程.在细胞进入减数分裂前,其染色体复制1次,但启动分裂后,细胞进行二次分裂,从而产生染色体数目减半的配子.减数分裂Ⅰ前期同源染色体的配对、联会、重组以及减数分裂Ⅰ后期同源染色体的分离是... 详细信息

减数分裂是有性生殖生物配子产生的必需过程.在细胞进入减数分裂前,其染色体复制1次,但启动分裂后,细胞进行二次分裂,从而产生染色体数目减半的配子.减数分裂Ⅰ前期同源染色体的配对、联会、重组以及减数分裂Ⅰ后期同源染色体的分离是减数分裂的基本特征,而这些减数分裂特异事件的按时、依序发生则有赖于减数分裂Ⅰ前期程序性D N A双链断裂(D S B)的产生和以同源染色体为模板进行的同源重组修复.本文将对减数分裂特别是减数分裂Ⅰ前期染色体的行为进行简要综述,并就其分子基础和机制进行分析讨论.

关键词：减数分裂染色体行为联会复合体重组 DSB

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一种基于遗传算法的缺陷集合最小化方法

计算机工程与应用 2003年第32期39卷 84-86页

作者：张涛蒋凡汪渊中国科学技术大学计算机科学与技术系合肥230027

文章根据遗传算法,提出了一种简化导致软件系统故障的缺陷集合的方法。在软件缺陷注入测试中应用此方法,可以快速地从注入缺陷集合中分离出导致软件系统故障的缺陷子集,进而可以方便测试者定位出被测软件系统中的脆弱点。

关键词：软件缺陷注入遗传算法缺陷系统故障

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建筑防火电缆的探讨

现代建筑电气 2018年第9期9卷 18-21,44页

作者：蒋仁章范涛安徽太平洋电缆股份有限公司安徽无为238371

按照相关标准要求,分析了建筑防火电缆的设计要求,介绍了防火电缆的种类,阐述了电缆相关工艺要求,展望了柔性防火电缆的发展方向,提出柔性防火电缆的发展方向需结合GB 31247—2014《电缆及光缆燃烧分级》,燃烧等级达到A级或B1级。

关键词：防火电缆矿物绝缘电缆电缆分类工艺流程

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RISC体系结构计算机的中断检测

计算机工程 2000年第7期26卷 77-78,84页

作者：彭涛蒋凡孟宪海李曦赵振西中国科学技术大学计算机系合肥230027

通过对若干种ＲＩＳＣ体系结构的分析，特别是对Ｓｕｎ４Ｍ体系结构的中断处理机制及其检测技术的分析研究，给出了中断检测的定义、中断检测的内容、中断检测的组成和适用于ＲＩＳＣ体系结构计算机的中断检测程序和中断服务例程的框... 详细信息

通过对若干种ＲＩＳＣ体系结构的分析，特别是对Ｓｕｎ４Ｍ体系结构的中断处理机制及其检测技术的分析研究，给出了中断检测的定义、中断检测的内容、中断检测的组成和适用于ＲＩＳＣ体系结构计算机的中断检测程序和中断服务例程的框架性算法。通过计数器／时钟中断检测实例对中断检测机制进行了阐述。

关键词： RISC 体系结构计算机中断检测

Effects of aggregate size distribution and carbon nanotubes on the mechanical properties of cemented gangue backfill samples under true triaxial compression

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 311-324页

作者： Qian Yin fan Wen Zhigang tao Hai Pu Tianci Deng Yaoyao Meng Qingbin Meng Hongwen Jing Bo Meng jiangyu Wu State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering China University of Mining and TechnologyXuzhou 221116China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and TechnologyHuainan 232001China State Key Laboratory for Geomechanics&Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing 100083China Key Laboratory of Xinjiang Coal Resources Green Mining Ministry of EducationXinjiang Institute of EngineeringUrumqi 830023China

The mechanical behavior of cemented gangue backfill materials(CGBMs)is closely related to particle size distribution(PSD)of aggregates and properties of cementitious ***,the true triaxial compression tests,CT scanning,SEM,and EDS tests were conducted on cemented gangue backfill samples(CGBSs)with various carbon nanotube concentrations(P_(CNT))that satisfied fractal theory for the PSD of *** mechanical properties,energy dissipations,and failure mechanisms of the CGBSs under true triaxial compression were systematically *** results indicate that appropriate carbon nanotubes(CNTs)effectively enhance the mechanical properties and energy dissipations of CGBSs through micropore filling and microcrack bridging,and the optimal effect appears at P_(CNT)of 0.08wt%.Taking PSD fractal dimension(D)of 2.500 as an example,compared to that of CGBS without CNT,the peak strength(σ_(p)),axial peak strain(ε_(1,p)),elastic strain energy(Ue),and dissipated energy(U_(d))increased by 12.76%,29.60%,19.05%,and90.39%,***,excessive CNTs can reduce the mechanical properties of CGBSs due to CNT agglomeration,manifesting a decrease inρ_(p),ε_(1,p),and the volumetric strain increment(Δε_(v))when P_(CNT)increases from 0.08wt%to 0.12wt%.Moreover,the addition of CNTs improved the integrity of CGBS after macroscopic failure,and crack extension in CGBSs appeared in two modes:detour and pass through the ***σ_(p)and U_(d)firstly increase and then decrease with increasing D,and porosity shows the opposite ***ε_(1,p)andΔε_(v)are negatively correlated with D,and CGBS with D=2.150 has the maximum deformation parameters(ε_(1,p)=0.05079,Δε_(v)=0.01990)due to the frictional slip effect caused by coarse *** increasing D,the failure modes of CGBSs are sequentially manifested as oblique shear failure,"Y-shaped"shear failure,and conjugate shear failure.

关键词： cemented gangue backfill materials particle size distribution true triaxial compression test carbon nanotubes mechanical properties failure modes

Soluble epoxide hydrolase:a next-generation drug target for Alzheimer's disease and related dementias

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Neural Regeneration Research 2025年第9期20卷 2585-2586页

作者： Andrew Gregory Chengyun Tang fan fan Department of Physiology Medical College of GeorgiaAugusta UniversityAugustaGAUSA

Alzheimer's disease(AD)and Alzheimer's diseaserelated dementias(ADRD)represent a significant public health challenge,with projections indicating a substantial increase in affected individuals due to the aging global *** the World Health Organization,AD/ADRD has affected more than 55 million individuals worldwide,with an additional 10 million cases diagnosed each year.

关键词： Alzheimer population drug

Tackling the microlensing wave effects of strong lensing gravitational waves with TAAH

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 257-258页

作者： Zuhui fan South-Western Institute for Astronomy Research Yunnan University

The rapid development of gravitational wave（GW） observations since their first detection in 2015 [1] has opened a completely new window for exploring the Universe. Consequently, astronomical research has entered the multimessenger era, allowing us to use different tracers to view the cosmos from various perspectives. Among others, the appealing application of gravitational wave events from compact binary mergers is that they can act as standard sirens to determine absolute cosmic distances entirely independent of standard candles. This approach is one of the most promising means to solve the current H0tension problem.

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