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大單位 住居團地의 規模計劃的 特性에 관한 硏究 : 釜山市 宅地開發事業地를 中心으로 Focus on the Housing Lot Development Projects in Pusan
姜大旭 釜山大學校 都市問題硏究所 1997 都市硏究報 Vol.5 No.-
The purpose of this paper is to find out the characteristics of pattern in large scale residential districts. For the above purpose, literature and field survey was carried out with the large scale residential district projects which were executed in Pusan. The main results obtained from the study were as follows. 1. The pattern of development project is affected by the conditions of location and easiness of execution. 2. The developing circumstance of peripheral district is good prepared, the ratio of housing lot is shown upward tendency. 3. The density of residential district is increased by the change of times.
Reunion of the Rabbit Superior Oblique Tendon After Weakening Procedures
강대욱,오지혜,전보영,권정윤 대한안과학회 2009 Korean Journal of Ophthalmology Vol.23 No.3
Purpose: To investigate the degree of reunion in rabbit eyes of the superior oblique tendon after several surgical weakening procedures. Methods: A total of 32 rabbits (64 eyes) were used in this study. The rabbits were randomly assigned to four groups, eight rabbits (16 eyes) in the tenotomy group, eight rabbits (16 eyes) in the tenectomy group, eight rabbits (16 eyes) in the disinsertion group and eight rabbits (16 eyes) in the recession group. The degree of reunion or reattachment of the superior oblique tendon on the globe were examined on four eyes in each group at postoperative weeks two, four, six and eight. Results: At eight weeks, the newly created insertion site remained at the same site in all eyes in the recession group, and the distal end of the superior oblique tendon was reattached at the medial border of the superior rectus muscle in all four eyes in the tenotomy and disinsertion groups, and in three of four eyes in the tenectomy group. Conclusions: From this experimental study, it was speculated that superior oblique recession is more effective than other superior oblique weakening procedures. This result could be helpful in the prediction of time of recurrence for superior oblique overaction after superior oblique weakening procedures.
효모에서 활성형의 곤충유래 항균펩티드 defensin의 발현
강대욱,안순철,김민수,안종석 한국생명과학회 2002 생명과학회지 Vol.12 No.4
효모 glucoamylase의 promoter와 분비신호서열 그리고 MF$\alpha$1의 prosequence를 이용하여 곤충 defensin을 S. cerevisiae 2805에서 항균활성을 보유한 형태로 발현 및 분비하는데 성공하였다. 발현된 defensin의 대부분이 세포 외로 분비되어 거의 모든 항균활성이 배양 상등액에 존재하였다. 이것은 S. cerevisiae에서 발현된 defensin이 glucoamylase의 분비신호서열과 MF$\alpha$1의 prosequenre에 의해 효율적으로 processing되어 분비됨을 시사한다. Defensin의 다른 미생물에 대한 항균활성을 조사한 결과 병원균인 St. aureus와 L. monocytogenes에 대해서도 항균활성이 존재하였다. As a biological model system for the production of an active antibacterial peptide, we have attempted the expression and secretion of insect defensin in Saccharomyces cerevisiae. Nucleotide sequences encoding mature defensin composed of 40 amino acids were fused in frame with promoter and signal sequence of Saccharomyces diastaticus glucoamylase, and mating factor $\alpha$ l[MF $\alpha$1] prosequence. The host strain, S. cerevisiae 2805 was transformed with the resulting plasmid, pSMFll The secretion of functional defensin was confirmed by growth inhibition zone assay using Micrococcus luteus as a test organism. Insect defensin was secreted to the culture supernatant in biologically active form by glucoamylase signal sequence and mating factor $\alpha$1 prosequence. Most of antibacterial activity was detected in the culture supernatant. Defensin was also active against Staphylococcus aureus and Listeria monocytogenes.
강대욱 전력전자학회 2024 전력전자학회 논문지 Vol.29 No.3
전 세계적인 친환경 탄소중립 정책 등에 따라 신재생에너지의 수용률 증대를 위해 다양한 목적과 기능을 갖는 전력변환기기가 새롭게 개발되거나 실적용을 위한 테스트 베드가 구축되고 있으며 개발된 변환장치들에 대한 실증 연구들이 진행되고 있다. 이러한 기기 중에 하나인 고압 직렬형 모듈라 멀티레벨 컨버터(MMC) 에너지저장장치(ESS) 기술에 대해 소개한다.