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Yang Zhou,Longjie Shi,Gang Ceng,Tiebing Liu,Yang Shi,Zhengwei Chen,Fenglin Wang,Yuefeng Ceng 한양대학교 세라믹연구소 2020 Journal of Ceramic Processing Research Vol.21 No.3
The thickness of glaze is one of the important indicators in the quality evaluation of Longquan celadon. But till now, there isno automatic and non-destructive method to measure it. In order to satisfy this demand, an automated method has beenproposed to measure the glaze thickness based on optical coherence tomography (OCT) technique. According to themorphological characteristics of celadon glaze in OCT image, the proposed method locates the upper and lower boundariesof the glaze layer, then the glaze thickness is automatically calculated after the axial resolution calibration of the OCT imagesfor different categories of Longquan celadon. In the experiment, the glaze OCT images of 6 different categories of Longquanceladon were applied in the glaze thickness estimation. By comparing with the physical measuring result, this method is provedto be able to measure the glaze thickness rapidly and non-destructively and the performance is enough to meet the demandof the industrial application.
A Genetic Heterogeneity of Renpenning Syndrome Mapped to Chromosome Xq21-Xqter
Cui, Bin,Sun, Yuming,Sun, Yuqin,Shi, Yuefeng,Pei, Gang,Kong, Xiangyin,Hu, Landian 한국유전학회 2004 Genes & Genomics Vol.26 No.1
Renpenning sysndrome is an X-linked mental retardation associated with short stature, moderate microcephaly, unremakdable facies, and no other neurological abnormality. Renpenning first reported this disorder in a Mennonite family, and using this family, Renpenning Syndrome (RENS) has been mapped to Xp11.2-p11.4 Xu Cs found a Chinses family with an X-linked hereditary disease, and the clinical phenotype is similar to RENS. Recently, we performed the linkage analysis, and the result has shown ht egenetic heterogeneity of Renpenning Syndrome: a suggestive novel locus mapped to Xq21-Xqter in this Chinese family.
Topology and start-up strategy for DC-DC transformers based on voltage balancing unit
Zhang, Jialin,Zha, Kunpeng,Tang, Xiaojun,Yang, Yuefeng,Yan, Hui,Wen, Fuyue,Shi, Mingming The Korean Institute of Power Electronics 2021 JOURNAL OF POWER ELECTRONICS Vol.21 No.7
As a core piece of equipment in DC distribution networks, DC solid-state transformers (DCSSTs) are attracting more and more attention in academia and industry. Due to the limitations in terms of the electrical stress of the switches, the input series output parallel (ISOP) structure is adopted in DCSSTs. This paper proposed an improved DCSST topology based on a voltage balancing unit (VBU). This topology has the advantages of higher power density, reduced weight, and cascaded number without compromising efficiency, cost, or reliability. The working modes, mathematical models, and control strategy are analyzed. In addition, a start-up strategy and a parameter design method are proposed in this paper. Simulation and experimental results verify the correctness and effectiveness of the proposed solution. The proposed DCSST is a practical scheme for the application of DC distribution networks.