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정봉진(Bong Jin Jeong),이기수(Kee Su Lee),정의중(Eui Jung Choong),황진석(Jin Seok Hwang),김영환(Young Hywan Kim) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.3
Schizencephaly is an unusual condition rarely detected antenatally. It is a neuronal migrational disorder consisting of clefts in the brain that communicate with the lateral ventricles. The etiology and the pathogenesis is not clearly estabilished. While some authors advocate a vascular insult with a secondary effect on brain development, others suggest a primary cerebral dysgenesis by genetic or acquired factors. The importance of making an accurate antenatal diagnosis is that the outcome for schizencephaly in considerably poor than for other causes of ventriculomegaly. Typical symtoms include seizures, mental retardation, spastic tetraplagia and blindness. We report a case of type II schizencephaly that was diagnosed antenatally in the third trimester with a brief reiew of literatures.
Poly(2-hydroxyethylmethacrylate)와 아미노산과의 상호작용에 관한 DSC와 TGA 열분석에 관한 연구(Ⅰ)
김의락,정봉진,정성욱,민경섭,이명재,남원모,박혜정,Kim, Ui Rak,Jeong, Bong Jin,Jeong, Sung Uk,Min, Kyung Sub,Lee, Myung Jae,Nam, Won Mo,Park, Hae Jung 대한화학회 1996 대한화학회지 Vol.40 No.6
Poly(2-hydroxyethylmethacrylate, HEMA)는 contact lens 재료물질로 사용되고, 물을 약 45퍼센트 포함하여 수화겔(hydrogel)을 만들 수 있는 고분자이다. Poly(HEMA)와 아미노산(alanine, arginine, methionine, proline, glycine, serine, lysine)과의 상호작용력을 DSC와 TGA 열분석법으로 측정한 결과 lysine, arginine, alanine의 결합성이 큼을 알 수 있었다. The interaction between poly(HEMA) which is material of contact lens containing about 45% water and amino acids (alanine, arginine, methionine, proline, glycine, serine, lysine) have been studied by using the thermal analysis methods through DSC and TGA. The experimental results of DSC and TGA were shown that lysine, arginine and alanine have the most stable interaction between poly(HEMA) and amino acids.