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Zhuohong Huang,Ting-Zhu Huang 한국전산응용수학회 2009 Journal of applied mathematics & informatics Vol.27 No.3
In this paper,we give the lower and upper bounds for inverse elements of strictly diagonally dominant seventh-diagonal matrices, and improve the bounds on [SIAM. J. matrix Anal.Appl.20(1999)820-837]. In this paper,we give the lower and upper bounds for inverse elements of strictly diagonally dominant seventh-diagonal matrices, and improve the bounds on [SIAM. J. matrix Anal.Appl.20(1999)820-837].
Huang, Zhuohong,Huang, Ting-Zhu The Korean Society for Computational and Applied M 2009 Journal of applied mathematics & informatics Vol.27 No.3
In this paper, we give the lower and upper bounds for inverse elements of strictly diagonally dominant seventh-diagonal matrices, and improve the bounds on [SIAM. J. matrix Anal.App1.20(1999)820-837].
Kinematics/statics analysis of a novel serial-parallel robotic arm with hand
Yi Lu,Zhuohong Dai,Nijia Ye,Peng Wang 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.10
A robotic arm with fingered hand generally has multi-functions to complete various complicated operations. A novel serial-parallel roboticarm with a hand is proposed and its kinematics and statics are studied systematically. A 3D prototype of the serial-parallel roboticarm with a hand is constructed and analyzed by simulation. The serial-parallel robotic arm with a hand is composed of an upper 3RPSparallel manipulator, a lower 3SPR parallel manipulator and a hand with three finger mechanisms. Its kinematics formulae for solving thedisplacement, velocity, acceleration of are derived. Its statics formula for solving the active/constrained forces is derived. Its reachableworkspace and orientation workspace are constructed and analyzed. Finally, an analytic example is given for solving the kinematics andstatics of the serial-parallel robotic arm with a hand and the analytic solutions are verified by a simulation mechanism.
Chen Shoucheng,Huang Zhuwei,Visalakshan Rahul Madathiparambil,Liu Haiwen,Bachhuka Akash,Wu You,Dabare Panthihage Ruvini L.,Luo Pu,Liu Runheng,Gong Zhuohong,Xiao Yin,Vasilev Krasimir,Chen Zhuofan,Chen 한국생체재료학회 2023 생체재료학회지 Vol.27 No.00
Background: Transepithelial medical devices are increasing utilized in clinical practices. However, the damage of continuous natural epithelial barrier has become a major risk factor for the failure of epithelium-penetrating implants. How to increase the “epithelial barrier structures” (focal adhesions, hemidesmosomes, etc.) becomes one key research aim in overcoming this difficulty. Directly targeting the in situ “epithelial barrier structures” related proteins (such as fibronectin) absorption and functionalization can be a promising way to enhance interface-epithelial integration. Methods: Herein, we fabricated three plasma polymerized bio-interfaces possessing controllable surface chemistry. Their capacity to adsorb and functionalize fibronectin (FN) from serum protein was compared by Liquid Chromatography- Tandem Mass Spectrometry. The underlying mechanisms were revealed by molecular dynamics simulation. The response of gingival epithelial cells regarding the formation of epithelial barrier structures was tested. Results: Plasma polymerized surfaces successfully directed distinguished protein adsorption profiles from serum protein pool, in which plasma polymerized allylamine (ppAA) surface favored adsorbing adhesion related proteins and could promote FN absorption and functionalization via electrostatic interactions and hydrogen bonds, thus subsequently activating the ITG β1-FAK-mTOR signaling and promoting gingival epithelial cells adhesion. Conclusion: This study offers an effective perspective to overcome the current dilemma of the inferior interfaceepithelial integration by in situ protein absorption and functionalization, which may advance the development of functional transepithelial biointerfaces. Graphical Abstract: Tuning the surface chemistry by plasma polymerization can control the adsorption of fibronectin and functionalize it by exposing functional protein domains. The functionalized fibronectin can bind to human gingival epithelial cell membrane integrins to activate epithelial barrier structure related signaling pathway, which eventually enhances the formation of epithelial barrier structure.