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허주행,김학현,강병택,양만표 한국임상수의학회 2020 한국임상수의학회지 Vol.37 No.5
Neutrophil extracellular trap (NET) formation is an immune response for the invasion of microbes. The purpose of this study is to examine the effect of zinc on NET formation of porcine peripheral blood polymorphonuclear cells (PMNs). The NET formation of PMNs was measured by fluorescence microplate reader. The production of tumor necrosis factor (TNF)-α in the culture supernatants from zinc-treated peripheral blood mononuclear cells (PBMCs) was measured by enzyme-linked immunosorbent assay (ELISA). Zinc itself did not have no effect on NET formation. However, the NET formation of PMNs was increased by culture supernatants from PBMCs treated with zinc. Also, the NET formation of PMNs was increased by recombinant porcine (rp) TNF-α. The production of TNF-α in PBMCs culture supernatants was shown to increase upon zinc treatments. These NET formations of PMNs increased by either culture supernatant from PBMCs treated with zinc or rpTNF-α were inhibited by treatment of anti-rpTNF-α polyclonal antibody (pAb). These results suggested that zinc has an immunostimulating effect on the NET formation of PMNs, which is mediated by TNF-α released from zinc-treated PBMCs. Therefore, zinc may play an important role for NET formation in the defense of porcine inflammatory diseases.
하이드로포밍을 이용한 대형차 앞차축 형상최적화에 관한 연구
장종민(Jongmin Jang),김윤규(Yungyu Kim),허주행(Joohaeng Hur),나상묵(Sangmook Na) 대한기계학회 2009 大韓機械學會論文集A Vol.33 No.3
Recently, The Hydroforming technology has recognized general technique in manufacture industry. Especially automotive industry, It has applied to increase strength, and decrease weight, cost and part number. The rigid axle suspension type is widely used for truck and bus in commercial vehicles due to simplicity. To develop the hydroforming rigid axle, it is necessary to estimate of the characteristics of front suspension from the design process. In this study , the characteristics estimation of the hydroforming rigid axle is preformed using Finite Element Analysis and apply to shape optimization.
하이드로포밍을 이용한 대형차 앞차축 형상최적화에 관한 연구
장종민(Jongmin Jang),김윤규(Yungyu Kim),허주행(Joohaeng Hur),나상묵(Sangmook Na) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Recently, The Hydroforming technology has recognized general technique in manufacture industry. Especially automotive industry, It has applied to increase strength, and decrease weight, cost and part number. The rigid axle suspension type is widely used for truck and bus in commercial vehicles due to simplicity. To develop the hydroforming rigid axle, it is necessary to estimate of the characteristics of front suspension from the design process. In this study, the characteristics estimation of the hydroforming rigid axle is preformed using Finite Element Analysis and apply to shape optimization.