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- 저자 : Zuo-zhou Zhao (검색결과 4 건)
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Zuo-zhou Zhao,An Duan,Ju Che,Jia-ru Qian,Wei-liang Jin 사단법인 한국계산역학회 2014 Computers and Concrete, An International Journal Vol.13 No.1
To evaluate the behavior of the advanced unbonded pre-stressed concrete containment vessel (UPCCV) for one typical China nuclear power plant under Japan’s March 11 earthquake, five nonlinear time history analysis and a nonlinear static analysis of a 1:10 scale UPCCV structure have been carried out with MSC.MARC finite element program. Comparisons between the analytical and experimental results demonstrated that the developed finite element model can predict the earthquake behavior of the UPCCV with fair accuracy. The responses of the 1:10 scale UPCCV subjected to the 11 March 2011 Japan earthquakes recorded at the MYG003 station with the peak ground acceleration (PGA) of 781 gal and at the MYG013 station with the PGA of 982 gal were predicted by the dynamic analysis. Finally, a static analysis was performed to seek the ultimate load carrying capacity for the 1:10 scale UPCCV.
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Research on accurate morphology predictive control of CFETR multi-purpose overload robot
Zuo Congju,Cheng Yong,Pan Hongtao,Qin Guodong,Zhou Pucheng,Xia Liang,Wang Huan,Zhao Ruijuan,Lv Yongqiang,Qin Xiaoyan,Wang Weihua,Yang Qingxi 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.10
The CFETR multipurpose overload robot (CMOR) is a critical component of the fusion reactor remote handling system. To accurately calculate and visualize the structural deformation and stress characteristics of the CMOR motion process, this paper first establishes a CMOR kinematic model to analyze the unfolding and working process in the vacuum chamber. Then, the dynamic model of CMOR is established using the Lagrangian method, and the rigid-flexible coupling modeling of CMOR links and joints is achieved using the finite element method and the linear spring damping equivalent model. The co-simulation results of the CMOR rigid-flexible coupled model show that when the end load is 2000 kg, the extreme value of the end-effector position error is more than 0.12 m, and the maximum stress value is 1.85 × 108 Pa. To utilize the stress-strain data of CMOR, this paper designs a CMOR morphology prediction control system based on Unity software. Implanting CMOR finite element analysis data into the Unity environment, researchers can monitor the stress strain generated by different motion trajectories of the CMOR robotic arm in the control system. It provides a platform for subsequent research on CMOR error compensation and extreme operation warnings
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Tl2Ba2CaCu2O8 Thin Films on MgO and Sapphire Substrates
X.J. Zhao,S.L. Yan,C. Zhang,E. Chen,L. Fang,L. Ji,Q.L. Xie,S. Li,T.G. Zhou,X. Zhang,X. Zuo,Y.G. Li 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.5I
High quality Tl2Ba2CaCu2O8(Tl-2212) films were grown on MgO and sapphire substrates with CeO2 buffer layers. The CeO2 buffer layers were prepared by using an in-situ process with RF magnetron sputtering. The Tl-2212 thin films were then fabricated in a two-step process: deposition of the Tl-containing precursor film and low-temperature post-thallination of the precursor film. The resulting Tl-2212 films showed an excellent biaxial texture. The superconducting transition temperatures, Tc’s, of the films on MgO and sapphire were 103.4 and 104.2 K, respectively. The critical current densities Jc at 77 K and zero magnetic field were as high as 2.37 × 106 A/cm2 for the film on MgO and 1.76 × 106 A/cm2 on sapphire. A surface resistance of 725 μ at 10 GHz and 77 K was obtained in the Tl-2212 film on CeO2 buffered sapphire.
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Guotao Huang,Yong He,Li Hong,Min Zhou,Xiaohu Zuo,Zhihan Zhao 한국통합생물학회 2022 Animal cells and systems Vol.26 No.4
Excessive mechanical traction damages the levator ani muscle (LAM), increasing the incidence of pelvic floor dysfunction (PFD). In this study, we explored the effects of oxidized nicotinamide adenine dinucleotide (NAD+) on the damage to both muscle cells and LAM tissue induced by mechanical stress (MS) at the cellular and animal levels. The cell damage model was established using a four-point bending system. The LAM damage model was established using vaginal distention and traction. Exogenous addition of PJ34, an inhibitor of poly (ADP-ribose) polymerase-1 (PARP-1), and the nicotinamide mononucleotide (NMN) precursor of NAD+ increased NAD+ levels. ATP content and mitochondrial membrane potential were measured to assess mitochondrial function. NAD+ levels, cell viability, and PARP-1 activity were detected using commercial kits. DNA damage in cells was detected with immunofluorescence staining, and LAM damage was detected with tissue TUNEL staining. PARP-1 activity and DNA damage of LAM were detected by immunohistochemistry. A small amount of DNA damage and PARP-1 activation did not affect NAD+ levels, while excessive DNA damage and PARP-1 activation led to an imbalance of NAD+ homeostasis. Furthermore, increasing NAD+ levels in vivo and in vitro could rescue mitochondrial dysfunction and damage to both muscle cells and LAM tissue induced by MS. In conclusion, MS can induce damage to both C2C12 cells and LAM tissue. Restoring NAD+ homeostasis can rescue this damage by improving mitochondrial function.
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