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Analysis and Suppression of Mutual Inductive Couplings of the CM EMI Filter in Motor Drive
Zhihao Fang,Dong Jiang,Zaidong Hu 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
This paper gives an analysis of mutual inductive couplings of the CM EMI filter in motor drive. First, the high-frequency model of L-C EMI filter is proposed, then, equivalent decoupling circuits are established based on the method of transferring controlled voltage source. It is concluded by calculation that some mutual inductive couplings have an effect on the transfer gain of EMI filter in the whole frequency spectrum of EMI current. While some mutual inductive couplings influence the transfer gain only at high frequency range. Finally, in order to drop the EMI current below the standard, the combination of an optimized EMI filter and an advanced method are adopted.
Meng Lei,Feng Bin,Luan Liming,Fang Zhihao,Zhao Guangyu 생화학분자생물학회 2022 Experimental and molecular medicine Vol.54 No.-
Methyl CpG binding protein 2 (MeCP2) is involved in nerve regeneration following ischemic stroke, but the related mechanism remains unclear. Here, we found low MeCP2 expression in hippocampal tissues. Using functional analysis, we demonstrated that MeCP2 accelerated FOXO3a methylation and subsequently inhibited its expression, thus repressing the apoptosis of neuronal cells. Mechanistically, FOXO3a could bind to the promoter region of SPRY2, consequently inducing its transcription and promoting the expression of the downstream target gene ZEB1. Altogether, our study revealed that overexpression of MeCP2 can protect mice against ischemic brain injury via disruption of the FOXO3a/SPRY2/ZEB1 signaling axis. Our results identify ectopic expression of MeCP2 as a therapeutic target in ischemic stroke.
Fanfeng Meng,Xue Li,Jian Fang,Yalong Gao,Lilong Zhu,Guiju Xing,Fu Tian,Yali Gao,Xuan Dong,Shuang Chang,Peng Zhao,Zhizhong Cui,Zhihao Liu 대한수의학회 2016 Journal of Veterinary Science Vol.17 No.4
The genomic diversity of Avian leukosis virus subgroup J (ALV-J) was investigated in an experimentally infected chicken. ALV-J variantsin tissues from four different organs of the same bird were re-isolated in DF-1 cells, and their gp85 gene was amplified and cloned. Ten clonesfrom each organ were sequenced and compared with the original inoculum strain, NX0101. The minimum homology of each organ rangedfrom 96.7 to 97.6%, and the lowest homology between organs was only 94.9%, which was much lower than the 99.1% homology of inoculumNX0101, indicating high diversity of ALV-J, even within the same bird. The gp85 mutations from the left kidney, which contained tumors,and the right kidney, which was tumor-free, had higher non-synonymous to synonymous mutation ratios than those in the tumor-bearing liverand lungs. Additionally, the mutational sites of gp85 gene in the kidney were similar, and they differed from those in the liver and lung, implyingthat organ- or tissue-specific selective pressure had a greater influence on the evolution of ALV-J diversity. These results suggest that moreALV-J clones from different organs and tissues should be sequenced and compared to better understand viral evolution and molecularepidemiology in the field.