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Reactive destabilization and bidirectional catalyzation for reversible hydrogen storage of LiBH_(4) by novel waxberry-like nano-additive assembled from ultrafine Fe_(3)O_(4) particles

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Journal of Materials Science & Technology 2024年第6期173卷 63-71页

作者： S.Wang M.H.Wu y.y.zhu Z.L.Li y.X.yang y.Z.Li H.F.Liu M.X.Gao Department of Material Science Shenzhen MSU-BIT UniversityShenzhen 518172China State Key Laboratory of Silicon and Advanced Semiconductor Materials&School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China Institute of Resources Utilization and Rare Earth Development State Key Laboratory of Rare Metals Separation and Comprehensive UtilizationGuangdong Provincial Key Laboratory of Rare Earth Development and ApplicationGuangdong Academy of SciencesGuangzhou 510650China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an 710021China National Supercomputing Center in Shenzhen Shenzhen 518055China

LiBH_(4) containing 18.5 wt.%H_(2) is an attractive high-capacity hydrogen storage material,however,it suffers from high operation temperature and poor ***,a novel and low-cost bifunctional additive,waxberry-like Fe_(3)O_(4) secondary nanospheres assembled from ultrafine primary Fe_(3)O_(4) nanoparticles,is synthesized,which exhibits significant destabilization and bidirectional catalyzation towards(de)hydrogenation of LiBH_(4).With an optimized addition of 30 wt.% waxberry-like Fe_(3)O_(4),the system initiated dehydrogenation below 100℃ and released a total of 8.1 wt.%H_(2) to 400℃.After 10 cycles,a capacity retention of 70% was achieved,greatly superior to previously reported oxides-modified *** destabilizing and catalyzing mechanisms of waxberry-like Fe_(3)O_(4) on LiBH_(4) were systematically analyzed by phase and microstructural evolutions during dehydrogenation and hydrogenation cycling as well as density functional theory(DFT)*** present work provides new insights in developing advanced nano-additives with unique structural and multifunctional designs towards LiBH4 hydrogen storage.

关键词： LiBH_(4) Hydrogen storage Waxberry-like Fe_(3)O_(4) Destabilization Catalysis

ABC Implementation in Chinese Manufacturing Firm: A Case Study in a Small and Medium Sized Firm

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ABC Implementation in Chinese Manufacturing Firm: A Case Stu...

Dielectric superlattice and its physical properties

International Conference on Industrial Technology and Management Science(ITMS 2015)

作者： yu.Liu y.F.Zhang W.J.Li y.y.zhu University of Cheng Du

Activity-Based Costing（ABC） system is designed to address the shortcomings of traditional volume based costing system. Up to date, number of studies conducted in Small-Medium Sized Enterprises（SMEs） about ABC implementation is relatively small. Therefore, this study conducts a case study in one Medium sized manufacturing firm in Sichuan province with aims to 1) identify differences in terms of profit produced by company’s current costing system and ABC system;2) to design ABC system for the selected company;as well as 3) to suggest how to implement ABC system successfully in the selected company.

关键词： Activity-Based Costing System Small-Medium Sized Enterprise Case study

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Dielectric superlattice and its physical properties

LI-RADS系统中包膜强化和包膜征象修正指标对于钆塞酸二钠增强MRI诊断≤3.0 cm肝细胞癌的作用

第14届全国晶体生长与材料学术会议

作者： y.y.zhu, S.N.zhu,and N.B.Ming National Laboratory of Solid State Microstructures, Nanjing University Nanjing 210093, China

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国际医学放射学杂志 2023年第5期 628-628页

作者： J.H.Pan M.C.Song L.L.yang y.C.Zhao y.y.zhu M.Wang 王聪惠

摘要目的评估以包膜强化（EC）或包膜征象修正指标作为LI-RADS主要指标用于钆塞酸二钠增强MRI (GdEOB-MRI)诊断≤3.0 cm肝细胞癌（HCC）的价值，并探讨影

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A HOMOTOPy METHOD OF SWITCHING SOLUTION BRANCHES AT THE PITCHFORK BIFURCATION POINT

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Journal of Computational Mathematics 2001年第3期19卷 299-308页

作者： Cong, y.-H. zhu, Z.-y. College of Mathematical Sciences Shanghai Teachers University Shanghai 200234 China

Provides information on a study which proposed a continuation method for switching solution branches at a pitchfork point. Problem of the standard pitchfork; Information on the systems of equations; Numerical examples... 详细信息

关键词： homotopy method switching solution branches pitchfork point

Microstructural Dependence of Damping Behaviour of Eutectoid Zn-Al Based Alloy (ZA27)──Discussion of "Damping Behaviour and Mechanism of Graphite Particulate Reinforced Metal Matrix Composites

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Journal of Materials Science & Technology 1999年第2期15卷 178-180页

作者： zhu, y.H. Institute de Investigaciones en Materiales UNAM Mexico D.F. 04510 Apart.P.70-360 Mexico Dept. of Manufacturing Engineering Hong Kong Polytechnic University Hong Kong

AN ANALySIS FOR IMPERFECT SENSITIVITy OF A SUPERCONDUCTING ROD

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Acta Mechanica Solida Sinica 1996年第3期9卷 236-245页

作者： Xiao, y zhu, yy LANZHOU UNIV DEPT MECHLANZHOU 730000PEOPLES R CHINA

On the basis of the interaction between the electromagnetic field and a solid, the imperfect sensitivity of a superconducting rod is studied in this paper. The influences of the initial deflection of the rod and the initial magnetic field on the stability are discussed. One can see that the bifurcation response of the rod with imperfections is similar to the universal unfolding of the fork bifurcation from the singularity theory.

关键词： magneto-elasticity superconducting rod imperfect sensitivity bifurcation figure

Dynamic stiffness for thin-walled structures by power series

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第8期7卷 1351-1357页

作者： zhu Bin LEUNG A.y.T. Department of Civil Engineering Zhejiang University Hangzhou 310027 China Department of Building and Construction City University of Hong Kong Hong Kong China

The dynamic stiffness method is introduced to analyze thin-walled structures including thin-walled straight beams and spatial twisted helix beam. A dynamic stiffness matrix is formed by using frequency dependent shape functions which are exact solutions of the governing differential equations. With the obtained thin-walled beam dynamic stiffness matrices, the thin-walled frame dynamic stiffness matrix can also be formulated by satisfying the required displacements compatibility and forces equilib-rium, a method which is similar to the finite element method (FEM). Then the thin-walled structure natural frequencies can be found by equating the determinant of the system dynamic stiffness matrix to zero. By this way, just one element and several elements can exactly predict many modes of a thin-walled beam and a spatial thin-walled frame, respectively. Several cases are studied and the results are compared with the existing solutions of other methods. The natural frequencies and buckling loads of these thin-walled structures are computed.

关键词： Dynamic stiffness method Thin-wall structures Power series Buckling

Effect of Sacrificial Anode Protection for Steel Pipe Piles at Dandong Port

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China Ocean Engineering 1998年第1期13卷 113-120页

作者： zhu, XC Ge, y Ge, RG Nanjing Hydraul Res Inst Dept Mat & Struct Nanjing 210024 Peoples R China

The sacrificial anode protection system for the steel pipe piles of the 3rd berth of Dandong; wharf at Dandong port has operated for eight years. In this paper, the program design and the protection effect of the sacrificial anode protection system are presented. The results of various inspections show that the piles are protected very satisfactorily.

关键词： steel pipe pile corrosion sacrificial anode cathodic protection protection potential protection percentage