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Polyistotic Fibrous Dysplasia 1例 : Report of a Case
이승기,김덕정,김영조,김학현 최신의학사 1971 最新醫學 Vol.14 No.3
A case of the polyostotic polymeric fibrous dysplasia was reported with review of literatures which involved the both maxillary sinusese, mandibls, and left femur, humerus, ulna and all the metacarpals. Homogenous intramedullary bone graft was done for the treatment of the intertrochanteric fracture of the femur in this case.
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시각센서를 이용한 벨로우즈 외부 모서리 레이저 용접 시스템의 개발에 관한 연구
이승기,유중돈,나석주 대한용접접합학회 1999 대한용접·접합학회지 Vol.17 No.3
The welded metal bellows is commonly manufactured by welding pairs of washer-shaped discs of thin sheet metal stamped from strip stock in thickness from 0.025 to 0.254 mm. The discs, or diaphragms, are formed with mating circumferential corrugations. In this study, the diaphragms were welded by using a CW Nd: YAG laser to form metal bellows. The bellows was fixed on a jig and compressed axially, while Cu-rings were installed between belows edges for intimate contact of edges. The difference between the inner diameter of bellows and jig shaft causes an eccentricity, while the tolerance between motor shaft and jig shaft causes a wobble type motion. A vision sensor which is based on the optical triangulation was used for seam tracking. An image processing algorithm which can distinguish the image by bellows edge from that by Cu-ring was developed. The geometric relationship which describes the eccentricity and wobble type motion was modeled. The seam tracking using the image processing algorithm and the geometric modeling was performed successfully.
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이승기,강형원,Lee, Seung-Gi,Kang, Hyung-Won 대한한방신경정신과학회 2013 동의신경정신과학회지 Vol.24 No.suppl1
Objectives : The Hwabyung Research Center of The Korean Society Of Oriental Neuropsychiatry has attempted to develop the 'Clinical Guidelines for Hwabyung'. Methods : The Hwabyung Research Center constructed a committee of experts and advisory group. Relevant literature was collected and evaluated in order to discover effective oriental psychotherapy as well as the management of Hwabyung. Results : We found some evidences that proved the effectiveness of oriental psychotherapy in the treatment of Hwabyung. The principles of management were also reviewed. Conclusions : Psychotherapy and management for Hwabyung were studies. We hope that the 'Clinical Guidelines for the Treatment of Hwabyung' is helpful for both oriental medical doctors and patients.
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Characterization of Genes Related to Cirsimaritin Biosynthesis From Cirsium pendulum Fisch
이승기,최익영,박남일,박예리,박경철,최범순,김남수 강원대학교 농업생명과학연구원 2023 강원 농업생명환경연구 Vol.35 No.4
Cirsium setidens Nakai and C. pendulum Fisch are Korean endemic thistle plants. Cirsimaritin is a major biocompound present in the genus Cirsium. We quantified cirsimaritin from the leaves of C. setidens Nakai and the stems and flowers of C. pendulum Fisch. Genes encoding the biosynthesis of cirsimaritin were identified from the transcriptomes of C. setidens Nakai. Gene Ontology analysis of the transcriptomes revealed that 5,000 transcripts were classified in the molecular function categories of cyclic compound binding proteins, transferase activity proteins, and heterocyclic compound binding proteins. More than 10,000 transcripts were identified in the biological process categories of organic metabolic process, primary metabolic process, cellular metabolic process, and biosynthetic process. Because chalcone synthase (CHS) and chalcone isomerase (CHI) are key enzymes in flavonoid biosynthesis, detailed phylogenetic and sequence analyses were carried out for these two enzymes. The phylogenetic analysis revealed that the CHS and CHI proteins of C. setidens were closely related to the CHS and CHI proteins of the artichoke thistle, Cynara carducunlus.
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이승기,박지은,전용필,김종민 한국발생생물학회 2023 발생과 생식 Vol.27 No.4
Exposure to environmental chemicals, including endocrine-disrupting chemicals, during the gestational period can have profound adverse effects on several organs in offspring. Bisphenol A (BPA) can infiltrate the human body through food and drinks, and its metabolites can cross both the placental and the blood-brain barriers. In this study, we investigate the effect of gestational exposure to BPA on epigenetic, biochemical, and histological modifications in the uterine tissues of F1 adult offspring rats. Pregnant rats were exposed to BPA from gestational day 8–15, and changes in global DNA methylation in uterine tissues obtained from adult offspring born to the exposed mothers were analyzed. Global DNA methylation analysis revealed that gestational exposure to BPA resulted in DNA hypomethylation in the uterus. Progesterone receptor (PR) protein expression in uterine tissues was monitored using western blot analysis, which revealed that the PR protein content was considerably higher in all BPA-exposed groups than in the control. Immunohistochemical examination for the PR revealed that intense PR-positive cells were more frequently observed in the BPA-exposed group than in the control group. To date, the evidence that the upregulation of PRs observed in the present study was caused by the nonmethylation of specific PR promoter regions is lacking. Conclusively, these results indicate that exposure to BPA during gestation induces epigenetic alterations in the uteri of adult female offspring. We speculate that the global DNA hypomethylation and upregulation of the PR observed simultaneously in this study might be associated with the uterus
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