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- 저자 : Hongyang Shi (검색결과 2 건)
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Ke Chen,Hongyang Shi,Yajun Guo,Lei Yin,Ziwei Bao,Hongmei Zheng 전력전자학회 2023 JOURNAL OF POWER ELECTRONICS Vol.23 No.4
Due to its unique characteristic of non-contact torque transmission between its permanent magnetic rotor and conductorrotor, permanent magnet eddy current coupling (PMECC) is preferable in transmitting torque from the outside to the insideof a sealed container, which can effectively avoid the tricky problem of dynamic seals. To mix non-uniform liquid solutionsor gas mixtures in sealed containers more effectively, a sinusoidal torque is also required. Thus, permanent magnet eddy current coupling with a slotted conductor is proposed in this paper, which can adaptively output sinusoidal torque under a real-time load when the input rotational speed is constant. Based on the equivalent magnetic circuit method, an analytical model for calculating torque is proposed. When establishing the equivalent magnetic circuit model of the PMECC, the radial magnetic flux leakage circuit is added to the equivalent magnetic circuit diagram, and the cross-sectional shape of the eddy current region is equivalent to an octagon, which simplifies the torque calculation process. The analytical model is verified by finite element method (FEM) simulation and experiments. According to a comparison, the peak and lowest values of output torque obtained by the experiments, the analytical model, and the FEM simulation are consistent. The output torque waveform obtained by the analytical model and FEM simulation are also consistent.
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Ruan Xinmin,Du Hongyang,Zhan Xinchun,Cong Xihan,Shi Fuzhi,Li Juan,Luo Zhixiang,Dong Zhaorong 한국식물생명공학회 2023 Plant biotechnology reports Vol.17 No.1
Developing genotypes with high-nitrogen use efficiency is a prerequisite for achieving sustainable agriculture and high yields. In this study, both physiological and metabolic analyses were performed to evaluate the NUE (nitrogen use efficiency) of two elite indica rice cultivars: OM052 and Huanghuazhan (HHZ). The pNUE and gNUE of OM052 were higher than HHZ under three N conditions, and significant (p < 0.05) especially under both LN and MN conditions. The contents of soluble sugar and malate were significantly different between OM052 and HHZ under LN and HN conditions. The GDH activity in OM052 was significantly high than that in HHZ under HN condition. Metabolic analyses showed that 136 and 142 differentially accumulating metabolites were identified between OM052 and HHZ under LN and HN conditions, respectively. KEGG analysis showed that ‘aminoacyl-tRNA biosynthesis’ was also the most significant enriched in LN_OM052 vs. LN_ HHZ and ‘Glyoxylate and dicarboxylate metabolism’ and ‘citrate cycle’ were the most significantly enriched in HN_OM052 vs. HN_ HHZ. The contents of four metabolites (cis-aconitate, isocitrate, fumarate, and malate) involved in the TCA cycle were significantly upregulated in HN condition compared with LN condition, regardless of OM052 and HHZ. Taken together, the results of our study revealed the physiological and metabolic differences underlying the OM052 and HHZ and provide new insights into coordinating C and N metabolism and improving the NUE of rice.
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