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| 1 | Influence of mechanical vibration on the solidification of a lost foam cast 356 alloy显示文摘Mechanical vibration was applied to the solidification of a lost foam cast(LFC) 356 aluminum alloy.Effects of mechanical vibration,with different peak acceleration,on the size and morphology of α-Al phase,and also on the mechanical properties of the castings were studied.Results indicated that α-Al dendrites gradually grow into equiaxed grains as the peak acceleration of vibration is increased.When the peak acceleration is between about 1 to 4 g,α-Al phase distribution is uniform and is refined obviously.α-Al dendrites are reduced and the mechanical properties of the castings are improved significantly when compared to those of the castings that are produced without vibration.However,when the peak acceleration is higher than 4 g,strong vibration will lead to defects formation,such as sand adhesion,while the amount and size of pores will be increased.And due to the turbulent flow that caused by strong vibration,the chance of forming large pores in the matrix has been increased significantly.The increase in defects will result in the deterioration of mechanical properties. | Zhao Zhong Fan Zitian Dong Xuanpu Tang Bo Pan Di Li Jiqiang | 2010 | China Foundry2010，7，1： | 7 |
| 2 | Comparison of Particle Swarm Optimization and Dynamic Programming for Large Scale Hydro Unit Load Dispatch显示文摘 | Cheng Chunrian Liao Shengli Tang Zitian | 2009 | Energy Conversion and Management2009，50，12： | 1 |
| 3 | Comparison of particle swarm optimization and dynamic programming for large scale hydro unit load dispatch 显示文摘 | CHENG Chuntian LIAO Shengli TANG Zitian | 2009 | Energy Conversion and Management2009，50，12： | 1 |
| 4 | Extracellular scaffold design for ultra-soft microtissue engineering显示文摘Soft and ultra-soft extracellular scaffolds constitute a major fraction of most human internal organs,except for the skeletal system.Modelling these organs in vitro requires a comprehensive understanding of their native scaffolding materials and proper engineering approaches to manufacture tissue architectures with microscale precision.This review focuses on the properties of soft and ultra-soft scaffolds,including their interactions with cells,mechanical properties(e.g.viscoelasticity),and existing microtissue engineering techniques.It also summarises challenges presented by the conflict between the properties of the materials demanded by cell behaviours and the capacities of engineering techniques.It proposes that leveraging the engineering ability of soft and ultra-soft scaffolds will promote therapeutic advances and regenerative medicine. | Jiaqi Wang Xiaowei Tang Zitian Wang Jiawei Li Shaohua Ma | 2021 | Light(Advanced Manufacturing)2021，2，2： | 0 |
| 5 | CNS Organoid Surpasses Cell-Laden Microgel Assembly to Promote Spinal Cord Injury Repair显示文摘The choice of therapeutic agents remains an unsolved issue in the repair of spinal cord injury.In this work,various agents and configurations were investigated and compared for their performance in promoting nerve regeneration,including bead assembly and bulk gel of collagen and Matrigel,under acellular and cell-laden conditions,and cerebral organoid(CO)as the in vitro preorganized agent.First,in Matrigel-based agents and the CO transplantations,the recipient animal gained more axon regeneration and the higher Basso,Beattie,and Bresnahan(BBB)scoring than the grafted collagen gels.Second,new nerves more uniformly infiltrated into the transplants in bead form assembly than the molded chunks.Third,the materials loaded the neural progenitor cells(NPCs)or the CO implantation groups received more regenerated nerve fibers than their acellular counterparts,suggesting the necessity to transplant exogenous cells for large trauma(e.g.,a 5 mm long spinal cord transect).In addition,the activated microglial cells might benefit from neural regeneration after receiving CO transplantation in the recipient animals.The organoid augmentation may suggest that in vitro maturation of a microtissue complex is necessary before transplantation and proposes organoids as the premium therapeutic agents for nerve regeneration. | Zitian Wang Haoran Zhao iaowei Tang Tianyu Meng Davit Khutsishvili Bing Xu Shaohua Ma | 2022 | Research2022，，4： | 0 |
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