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- 저자 : 고창순(Go Chang soon) (검색결과 2 건)
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유효열(Yoo Hyo Yol),심은용(Shim Eun Yong),강재봉(Kang Jae Bong),고창순(Go Chang soon),최길용(Choi Gil Yong),김형복(Kim Hyoung Bok) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
The Induction Heating equipment is widely used for steel plate heating in the surface treatment process of steel industries. In the case of thin steel plate, for high efficiency We need the high frequency induction heating equipment more than 100㎑. But it is difficult to realize the high frequency and high power at the same time. That's why most high frequency equipment more than 100㎑ has been imported from advanced Manufacturer. This paper will describe the development of 100㎑/5㎹A inverter module for 100㎑/20㎹A induction heating. We used the LCL resonance topology and ZVS/ZCS switching technology. And we also developed the low loss gate drive board and plate busbar inverter stack. We proved the performance by various experiment.
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감성돔 ( Acanthopagrus schlegeli ) 의 초기생활사 동안 소화기관 발달
이정식(Jung Sick Lee),김흥윤(Heung Yun Kim),변순규(Soon Gyu Byun),김진도(Jin Do Kim),고창순(Chang Soon Go),진평(Pyung Chin) 한국수산과학회 2000 한국수산과학회지 Vol.33 No.2
Differentiation and development of the digestive organ of the black sea bream, Acanthopagrus schlegeli were studied by means of histological methods. The hatched larva in TL (total length) 2.0㎜ (n=10) had a yolk sac of 1,000×590㎛ and simple straight digestive tract, which was composed of cuboidal epithelium. In the pre-larval stage of TL 3.5㎜, digestive tract could be distinguished into esophagus, stomach and intestine, and the exocrine glands were appeared in the pancreas. In this stage mucosal folds, eosinophilic granule cells and brush border were observed in the posterior intestine. Yolky materials were completely absorbed and the brush border was recognized in the free surface of anterior intestine in TL 3.7㎜. In the stomach mucosal folds began to appear from TL 4.0㎜. In this time the zymogen granules were recognized in the cytoplasm of pancreatic exocrine cells. In the post-larval stage ranged from 4.5 to 5.0㎜ in TL, hepatic cords started to develop, and the mucous secretory cells of PAS positive were observed at esophagus and intestine. In the post-larval stage ranged from 6.3 to 7.0㎜ in TL, histological layer of esophagus and intestine could be distinguished into serous membrane, muscular layer, submucosal layer and mucosal layer. From over TL 9.0㎜, stomach could be distinguished into cardiac, fundic and pyloric portion, and the gastric gland began to appear at mucosal fold of fundic stomach. In the juvenile stage ranged from 10.0 to 11.0㎜ in TL, histological structures of esophagus and intestine were similar to those of adult. From over TL 15.0㎜, histological structures of stomach were similar to those of adult. Structural and functional digestive organ of black sea bream was present from the juvenile stage ranged from 15.0 to 17.0㎜ in TL.
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