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| 1 | Strengthening and ductilization of laminate dual-phase steels with high martensite content显示文摘The steels with excellent strength and ductility are expected to be achieved by tailoring the microstructural features.In this work,laminate dual-phase(DP)steels with high martensite content(laminate HMDP steels)were produced by a combination of warm rolling and intercritical annealing.Influence of rolling strain and annealing temperature on the microstructural evolution and mechanical properties of laminate HMDP steels were systematically studied.The strength of HMDP steels was significantly improved to~1.6 GPa associated with a high uniform elongation of 7%,as long as the laminate structure is maintained.The strengthening and ductilizing mechanisms of laminate HMDP steels are discussed based on the influence of laminate structure and the high martensite content,which promote the development of internal stresses and can be correlated to the Bauschinger effect as measured by the cyclic loadingunloading-reloading experiments.Detailed transmission electron microscopy(TEM)observation was applied to characterize the dislocation structure in the deformed ferrite. | Bo Gao Rong Hu Zhiyi Pan Xuefei Chen Yi Liu Lirong Xiao Yang Cao Yusheng Li Qingquan Lai Hao Zhou | 2021 | Journal of Materials Science & Technology2021，，6： | 4 |
| 2 | RESEARCH OF A NEW PORTABLE GC INSTRUMENTATION AND ITS APPLICATION IN BIOMEDICAL ENGINEERING显示文摘-A Portable gas chromatograPhy (GC) instrument is presented in this paper. In this GC instrument a new gaseous sampling device was used in place of conventional sampling valves.It has no quantitative tube or movable components in the sample Path. The sampling size si determined by time with a high precision,which is not sensitive to the sample temperature and pressure.Especially,the sample can not only inject into the column head,but also the carrier gas blow the column reversely and clean it.The portable GC instrument based on the sampling device can be used in enviromental and biomedical monitoring. | Li Fucheng Li Zhiyi Pan Qi (College of Precision Instrumentation and photoelectron Engineering Tianjin University, Tianjin, 300072, China) | 1997 | Chinese Journal of Biomedical Engineering(English Edition)1997，6，4： | 3 |
| 3 | Regulating closed pore structure enables significantly improved sodium storage for hard carbon pyrolyzing at relatively low temperature显示文摘The closed pore has been considered as the key structure for Na ion storage in hard carbon.However,the traditional view is that closed pores can only be formed by the curling of graphite-like crystallites in the case of high temperature carbonization.Ingenious designing of closed pore structures at lower temperature is still blank.Herein,for the first time,engineering the wall thickness and number of closed pores in waste rosewood-derived hard carbon was successfully achieved at a low temperature of 1100℃ by removing the lignin and hemicellulose components in wood precursor.When applied as an anode material,the optimum sample exhibits a high capacity of 326 mAh/g at 20 mA/g and a remarkable rate capability of 230mAh/g at 5000 mA/g,significantly higher than those of the untreated sample(only 33 mAh/g at 5000 mA/g).The significantly improved Na storage performance should be attributed to abundant closed pores that provide sufficient spaces forNa storage and thin porewall structure that is beneficial to the diffusion of Na^(+)in the bulk phase.This work provides a new idea for the future application of biomass-based hard carbon for advanced Na ion batteries. | Siyu Zhou Zheng Tang Zhiyi Pan Yuancheng Huang Le Zhao Xi Zhang Dan Sun Yougen Tang Abdelghaffar S.Dhmees Haiyan Wang | 2022 | SusMat2022，2，3： | 2 |
| 4 | Recent advances in solar-driven CO_(2) reduction over g-C_(3)N_(4)-based photocatalysts显示文摘The persistent increase of CO_(2) levels in the atmosphere,already exceeding 400 ppm,urges the exploration of CO_(2) emission reduction and recycling technologies.Ideally,photocatalytic conversion of CO_(2) into valuable hydrocarbons realizes solar-to-chemical energy conversion,which is a desirable“kill two birds with one stone”strategy;namely,CO_(2) photoreduction can simultaneously tackle energy shortage and keep global carbon balance.Graphitic carbon nitride(g-C_(3)N_(4))working on CO_(2) reduction reaction deserves a highlight not only for the metal-free feature that endows it with low cost,tunable electronic structure,and easy fabrication properties but also because of its strong reduction ability.The present review concisely summarizes the latest advances of g-C_(3)N_(4)-based photocatalysts toward CO_(2) reduction.It starts with the discussion of thermodynamics and dynamics aspects of the CO_(2) reduction process.Then the modification strategies to promote g-C_(3)N_(4)-based photocatalysts in CO_(2) photoreduction have been discussed in detail,including surface functionalization,molecule structure engineering,crystallization,morphology engineering,loading cocatalyst,and constructing heterojunction.Meanwhile,the intrinsic factors affecting CO_(2) reduction activity and selectivity are analyzed and summarized.In the end,the challenges and prospects for the future development of highly g-C_(3)N_(4)-based photocatalysts in CO_(2) reduction are also presented. | Quanlong Xu Zhihua Xia Jingmei Zhang Zhiyi Wei Qin Guo Huile Jin Hua Tang Shouzhu Li Xuecong Pan Zhi Su Shun Wang | 2023 | Carbon Energy2023，5，2： | 1 |
| 5 | Mechanical Strength and Structural Basis ofβ2 Integrin to Mediate Neutrophil Accumulation on Liver Sinusoidal Endothelial Cells:A Study Using Atomic Force Microscopy and Molecular Dynamics Simulations显示文摘Neutrophil(PMN)accumulation on liver sinusoidal endothelial cells(LSECs)is crucial to pathogen clearance and tissue damage in the liver sinusoids and controlled by a series of adhesion molecules expressed on the surface of PMNs and LSECs.The role of lymphocyte function-associated antigen-1(LFA-1)and macrophage-1 antigen(Mac-1)in this process is still contentious.Here we compared the dynamic force spectra of the binding ofβ2 integrin to intercellular adhesion molecule-1(ICAM-1)on LSECs using atomic force microscopy(AFM)and performed free and steered molecular dynamics(MD)simulations to analyze their structural bases of LFA-1-or Mac-1-I-domain and ICAM-1-D1 or D3 pair in their force spectra.Our AFM data suggest that the mechanical strength of LFA-1-ICAM-1 bond is significantly stronger than that of Mac-1-ICAM-1 bond,implying a dominate role for LFA-1 to mediate PMN adhesion under shear flow.MD simulations indicated that spontaneous dissociation of Mac-1-I-domain vs.ICAMD3-domain is slower with the stronger interaction energy than that for LFA-1 I-domain vs.ICAM-D1-domain and that the rupture force for Mac-1 is lower than that for LFA-1,which are in qualitative agreement with the above experimental observations.These data indicate that the biomechanical features of LFA-1 and Mac-1 to mediate PMN adhesion on LSECs in vitro are similar with those in other tissues like cerebrovascular endothelium,while Mac-1-mediated PMN recruitment in liver sinusoids may stem from the slow blood flow in vivo.These findings further the understandings of PMN recruitment under shear flow in liver sinusoids. | Ning Li Xiao Zhang Peiwen Li Hao Yang Chunfang Tong Shouqin Lü Yan Zhang Zhiyi Ye Jun Pan Mian Long | 2018 | Computer Modeling in Engineering & Sciences2018，，8： | 0 |
| 6 | Recent progress of grain boundary diffusion process for hot-deformed Nd-Fe-B magnets显示文摘Grain boundary diffusion process(GBDP)was first proposed for sintered Nd-Fe-B magnets to achieve the high utilization efficiency of heavy rare earth elements.Recent success of fabricating high performance nanocomposite magnets by GBDP indicates that this method also exerts huge applicable potential on hot-deformed Nd-Fe-B magnets.In this review,the development and magnetic property enhancement mechanisms of different diffusion methods proposed on hot-deformed magnets were thoroughly elucidated.Moreover,the improve room for further property enhancement and the accompanying problems of GBDP on hot-deformed magnets are also discussed in this article. | Min Zhao Na Liu Xu Tang Renjie Chen Jinyun Ju Wenzong Yin Yeyuan Du Aru Yan Xincai Liu Jing Pan Zhiyi Xu | 2023 | Journal of Rare Earths2023，41，4： | 0 |
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