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박가연 ( Ga Yun Park ),김경민 ( Kyung Min Kim ),이호연 ( Ho Yeon Lee ),박창현 ( Chang Hyun Park ),김영민 ( Young Min Kim ),탁용석 ( Yong Sug Tak ),최진섭 ( Jin Sub Choi ) 한국공업화학회 2012 공업화학 Vol.23 No.5
본 연구에서는 균일하고 높은 비율의 에치 피트를 갖는 알루미늄 전극을 제작하기 위해 소프트 리소그래피를 이용하 여 알루미늄 표면에 보호층을 형성하였다. 알루미늄 표면 위에 잘 정돈된 보호층을 형성하기 위해 다양한 방법을 시 도하였으며, 보호층을 이용한 알루미늄 에칭과 보호층이 존재하지 않는 알루미늄 에칭을 비교 관찰하였다. 보호층을 이용하여 알루미늄 에칭을 진행하였을 때, 알루미늄 표면에 균일한 에칭 표면이 확인되었으나, 보호층이 존재하지 않았을 때는 불균일한 표면 에칭이 관찰되었다. In this study, etched Al electrodes with ordered arrays of pits and high aspect ratios were successively obtained using a patterned protect layer on the Al surface prepared with soft lithography method, Various methods were applied to fabricate a well ordered protect layer on the Al surface and the difference of etched Al surfaces with and without a protect layer was investigated by using SEM, It was found that the etched Al surfaces were affected by using either a protect layer or a non protect layer. As a result, the Al surface with the well ordered pits could be achieved by protect layer. However, the etched Al with nonuniform pits can be obtained without any protect layers.
강명수 ( Myong Su Kang ),이호연 ( Ho Yun Lee ),서평주 ( Pyong Ju Seo ),김희진 ( Hee Jin Kim ),윤성철 ( Sung Chul Yun ),서필원 ( Phil Won Seo ),권미선 ( Mi Seon Kwon ) 대한내과학회 2006 대한내과학회지 Vol.71 No.4
Parathyroid carcinoma is an uncommon cause of PTH-related hypercalcemia with a reported incidence of 0.4% to 5% of all cases of primary hyperparathyroidism. Even though the clinical manifestations of hyperparathyroidism are more severe in patients with parathyroid carcinoma than in those with parathyroid adenoma, it is difficult to differentiate carcinoma from adenoma preoperatively. Parathyroid carcinomas are usually larger and firmer than parathyroid adenomas and patients with parathyroid carcinoma have a higher incidence of renal dysfunction, bone disease and gastrointestinal symptoms. Anemia is an uncommon clinical feature of parathyroid carcinoma. There have been no prior cases of ectopic parathyroid carcinomas reported to date. In this article, we report the case of a 26-year-old man who developed severe anemia and acute renal failure due to an ectopic parathyroid tumor and was diagnosed with parathyroid carcinoma postoperatively. His serum calcium levels returned to normal and the anemia resolved postoperatively.(Korean J Med 71:435-441, 2006)
김종민(Jong-Min Kim),이승로(Seungro Lee),금성민(Sung-Min Kum),이호연(Ho-Yeon Lee),윤희중(Hee-Jung Yun),이창언(Chang-Eon Lee) 한국연소학회 2009 KOSCOSYMPOSIUM논문집 Vol.- No.38
Recently, strict pollutant regulations of NOx emission and increasing awareness of the environmental damage stimulated interest in research to obtain useful information regarding CO and NOx reductions at the same time. In this study, Premixed flame was experiment to reduce CO and NOx emission level by heat exchanger location in which burner and first heat location distance(L₁) and first and second heat location(L₂) changed. To reduce the NOx emission, first heat exchanger location(L₁) was decided near the flame. After first heat exchanger(L₁) was decided for the optimal NOx emission(about 30 ppm), in order to decide the optimal CO emission(about 30ppm), seocond heat exchanger location(L₂) was tested and decided for several cases. Finally, the optimal location of heat exchanger for minimal CO and NOx emission simultaneously was determined and suggested.