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정혜랑 대한영상의학회 1983 대한영상의학회지 Vol.19 No.3
Radiographic and pahtologic findings of surgically proved 2 cases of multicystic dysplastic kidney are presented with great emphasis on the ultrasonographic features. The first case was 2 week old male and the second case was 18 month old female who were admitted with the same complaint of nonsymptomatic abdominal mass. IVP findings were unilateral non-visualized kidney suggestive of renal origin mass, but in the second case due to faint rim sign, erroneous diagnosis of the hydronephrosis were given. By the ultrasonography, preoperative corrective diagnosis of multicysitc dysplastic kidney was possible in both cases. Characteristic findings and differential points with other mass lesions were as follows. 1. Multiple round cysts, separated each other with distinct interface. 2. Absence of renal parenchymal and sinus echo. 3. no distinct outer cortical margin. Nephrectomy was performed in both cases and the specimen showed findings of multicystic kidney including the ureteral atresia.
정혜임,Junwei Liang,정유나,임동빈 한국미생물학회 2015 The journal of microbiology Vol.53 No.12
Exonuclease VII (ExoVII) of Escherichia coli is a single strandspecific DNA nuclease composed of two different subunits: the large subunit, XseA, and the small subunit, XseB. In this study, we found that multicopy single-stranded DNAs (msDNAs), Ec83 and Ec78, are the in vivo substrates of ExoVII; the enzyme cuts the phosphodiester bond between the fourth and fifth nucleotides from the 5 end. We used this msDNA cleavage to assess ExoVII activity in vivo. Both subunits were required for enzyme activity. Expression of XseA without XseB caused cell death, even though no ExoVII activity was detected. The lethality caused by XseA was rescued by surplus XseB. In XseA-induced death, cells were elongated and multinucleated, and their chromosomes were fragmented and condensed; these are the morphological hallmarks of apoptotic cell death in bacteria. A putative caspase recognition sequence (FVAD) was found in XseA, and its hypothetical caspase product with 257 amino acids was as active as the intact protein in inducing cell death. We propose that under ordinary conditions, XseA protects chromosome as a component of the ExoVII enzyme, but in some conditions, the protein causes cell death; the destruction of cell is probably carried out by the amino terminal fragment derived from the cleavage of XseA by caspase-like enzyme.
정혜(?慧) 길림성민족사무위원회 2014 중국조선어문 Vol.194 No.-
문법기술은 한국어문법교육을 위한 기반이 되는 작업이다. 본고에서는 문법기술에 보편적으로 적용될만한 원리로 “학습자를 중심으로 해야 한다는 점, 학습자들로 하여금 종합적이고 체계적인 학습이 이루어질수 있도록 의미기능을 중심으로 몇개의 단원으로 나누어 기술해야 한다는 점, 각 문법항목의 형태, 통사, 의미, 화용 등 정보를 제공해주어야 한다는 점, 류의관계를 갖는 문법항목은 차이점에 초점을 두고 기술해야 한다는 점, 모국어와의 대조분석의 결과를 잘 반영하여 기술해야 한다는 점, 문법기술에 제시된 례문은 학습자의 숙달정도에 맞아야 하고 제시된 의미기능과 일치해야 한다는 점” 등 6가지를 제시해보았다. 이에 근거하여 한국어교재의 문제점을 지적하고 개선방안을 마련해보았다.