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이상업(S.U. Lee),허덕재(D.J. Hur),이광헌(K.H. Lee),유중근(J.G. Ryu) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, the Finite Element Method(FEM) is used widely from many field and when developing the decoupler in FEM, it is very important to understand the nonlinear dynamic characteristics of the mesh-ring. The purpose of this research is to develop finite element model to apply the nonlinear behavior of the mesh-ring, for this, FE-model of mesh-ring used the porous material in Abaqus.
이상호(S . H . Lee),전우민(W . M . Jeon),김영교(Y . K . Kim),이상업(S . U . Lee),정순영(S . Y . Jeong) 한국축산학회 1991 한국축산학회지 Vol.33 No.5
Major milk proteins were analysed using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and two demensional (2-D) gel electrophoresis combined with isoelectic focusing(IEF). α_s- and β-caseins were recognized in acid-precipitable fractions of both Holstein (HOL) and Korean Native cattle (KNC) milk as indicated with commercial preparation of bovine caseins. κ-Casein was further identified with a positive staining of periodic acid Schiffs (PAS) reagents and disappearance of the protein after rennin treatment. Both commercial α_s-, β-and κ-casein, and our casein preparations gave albumin and β-lactoglobulin bands in the SDS-PAGE. Other unknown minor components were also found in both HOL and KNC. In 2-D analysis albumin was separated into two different spots, and β-lactoglobulin was also separated into two genetic variants, A and B. Casein complexes are highly complicated with their heterogeneity. KNC appeared to have more proteins thus sho-wing different peptide patterns. The results suggest that SDS-PAGE and 2-D gel electrophoresis would be useful to analyse the major milk proteins and are applicable to various analytical purposes.