5篇
您的检索式：作者名="Zhuang Chengyu"
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| 1 | Comparison of simple discectomy and instrumented posterior lumbar interbody fusion for treatment of lumbar disc herniation combined with Modic endplate changes显示文摘 | Cao Peng Chen Zhe Zheng Yuehuan Wang Yuren Jiang Leisheng Yang Yaoqi Zhuang Chengyu Liang Yu Zheng Tao Gong Yaocheng Zhang Xingkai Wu Wenjian Qiu Shijing | 2014 | Chinese Medical Journal2014，，15： | 15 |
| 2 | Nonlinear short-term heart rate variability prediction of spontaneous ventricular tachyarrhythmia显示文摘As malign ventricular tachyarrhythmias triggering sudden cardiac death (SCD), both ventricular tachycardia (VT) and ventricular fibrillation (VF) are major causes of mortality. The most efficient ther- apy for SCD prevention is implantable cardioverter defibrillators (ICD). The ICD can accurately and ef- fectively identify the forthcoming of fatal ventricular tachyarrhythmias and deliver a shock in order to restore patients’ normal sinus rhythm. In this study, two nonlinear complexity measures based on en- tropy: approximate entropy (ApEn) and sample entropy (SampEn) as well as two time linear indices: the mean RR interval (the average of time intervals between consecutive R-waves) and the standard devia- tion of RR intervals were used for short-term forecasting of VT-VF occurrence. The last small sections of interbeat intervals preceding 135 VT-VF episodes from 78 patients stored by the ICD were analyzed and compared with individually acquired control time series (CON series) from the same patients, which are normally intrinsic sinus rhythms. The results demonstrate that in addition to an obvious in- crease in heart rates of the patients, the values of two entropy measures are significantly smaller for VT-VF episodes than those for CON series. Conclusions can be drawn that when a ventricular tach- yarrhythmia approaches, the sympathetic tone of the patients is increased, and the complexity of their RR intervals immediately before the onset of VT-VF events is obviously lower than that of RR intervals recorded during sinus rhythms. For a better separation, the optimal range of threshold r is determined for two algorithms. ApEn and SampEn measures might be the suitable nonlinear parameters for short- term prediction of life-threatening ventricular tachyarrhythmias in the application of the cardioversion and defibrillation. | ZHUANG JianJun NING XinBao DU SiDan WANG ZhenZhou HUO ChengYu YANG Xi FAN AiHua | 2008 | Chinese Science Bulletin2008，53，16： | 2 |
| 3 | Theoretical aspects of selecting repeated unit cell model in micromechanical analysis using displacement-based finite element method显示文摘Repeated Unit Cell(RUC)is a useful tool in micromechanical analysis of composites using Displacement-based Finite Element(DFE)method,and merely applying Periodic Displacement Boundary Conditions(PDBCs)to RUC is almost a standard practice to conduct such analysis.Two basic questions arising from this practice are whether Periodic Traction Boundary Conditions(PTBCs,also known as traction continuity conditions)are guaranteed and whether the solution is independent of selection of RUCs.This paper presents the theoretical aspects to tackle these questions,which unify the strong form,weak form and DFE method of the micromechanical problem together.Specifically,the solution’s independence of selection of RUCs is dealt with on the strong form side,PTBCs are derived from the weak form as natural boundary conditions,and the validity of merely applying PDBCs in micromechanical Finite Element(FE)analysis is proved by referring to its intrinsic connection to the strong form and weak form.Key points in the theoretical aspects are demonstrated by illustrative examples,and the merits of setting micromechanical FE analysis under the background of a clear theoretical framework are highlighted in the efficient selection of RUCs for Uni Directional(UD)fiber-reinforced composites. | Lijun GAO Chengyu WANG Zhanli LIU Zhuo ZHUANG | 2017 | Chinese Journal of Aeronautics2017，30，4： | 2 |
| 4 | Intradiscal injection therapy for degenerative chronic discogenic low back pain with end plate Modic changes显示文摘 | Peng Cao Leisheng Jiang Chengyu Zhuang Yaoqi Yang Zhongwei Zhang Wei Chen Tao Zheng | 2011 | The Spine Journal2011，，2： | 2 |
| 5 | Intradiscal injection therapy for degenerative chronic discogenic low back pain with end plate Modic changes显示文摘 | Peng Cao Leisheng Jiang Chengyu Zhuang Yaoqi Yang Zhongwei Zhang Wei Chen Tao Zheng | 2011 | The Spine Journal2011，，2： | 1 |
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