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김성택,서성원,정소연,양영순 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.11
선박 의장시스템은 선박에 필요한 다양한 기능을 제공하기 위해 선박 전체에 배치되어 사용된다. 선박 의장시스템이 고장으로 인해 이러한 기능을 할 수 없게 되는 경우 선박 전체의 운항에 영향을 끼쳐 인명이나 환경에 피해를 입힐 수 있는 사고가 발생하는데 원인을 제공할 수 있다. 따라서 선박의 수명주기 중에서도 설계 단계에서의 의장시스템의 위험도 평가를 수행하는 업무에 대한 필요성이 대두되고 있다. 본 논문에서는 설계 관점에서 선박 의장시스템의 위험도 평가가 언제, 어떠한 방법으로 이루어져야 하는지에 대해 소개한다.
가토에서 Tretinoin 진피 내 주사가 진피 비후에 미치는 영향
백무현,이익준,김승홍,김성택 大韓成形外科學會誌 2000 Archives of Plastic Surgery Vol.27 No.1
Tretinoin(all-trans retinoic acid) is a metabolite of vitamin A and it is useful in the treatment of photoaging skin. Photoaging skin is characterized by wrinkles, mottled pigmentation, dry and rough skin, and loss of skin tone. Current use of topical tretinoin mainly acts on the epidermis, requires a long period to obtain the desired results and may cause skin hyperpigmentation. A combination of topical and injectable tretinoin has been used to reduce the treatment period as a result of its potentialized effect on the dermis when compared to graditional topical cream use. in this study, we observed histologic alterations in 5 white rabbits after using 0.05% topical tretinoin cream and 0.1% injectable tretinoin. Tretinoin was treated on the rabbits ears-group 1 and 2 on the right ear for study 1, and group A and B on the left ear for study 2. Study 1 was done to differentiate whether the dermal thickening is due to the simple physical stretching of dermis by intradermal injection, or whether it is duer to the histologic change by tretinoin. In group 1, saline was injected intradermally and in group 2, tretinoin was injected intradermally. Study 2 was done to compare the dermal thickening between the topical tretinoin cream treatment group (group A) and the combined topical and injectable tretinoin group (group B). Injection was done once a week immediately followed by 340nm blue light skin exposure. These treatment were done for 12 weeks. We harvested skin stripe from all group, group 1 and 2, and group A and B respectively, after 2, 6, and 12 weeks after treatment. Histologic differences were observed and measured. Dermal thickening was observed in group 2 and in group B(p<0.05). The results showed that intradermal injection of tretinoin mainly acts on the dermis and potentialtes the effect on photo- aging skin and fine wrinkles.
腎部分切除術에 있어서 腎實質切除에 使用한 結紮絲에 關한 比較硏究
金成澤,金世景 고려대학교 의과대학 1973 고려대 의대 잡지 Vol.10 No.1
The suture material has always played important rolls in surgical operation ever since its inception. The use of nonabsorbable suture has given way to the absorbable suture and again the use of nonabsorbable material is becoming popular. Suture material is mainly used in approximating tissues and keep them in the desired position or in ligating vessels without introduction of infection of irritation in the tissues. Recently we have given another role to the suture material that is cutting kidney parenchyma when the intrarenal mass ligation is performed. This study was undertaken to compare the tissue reaction induced by biologic properties from different kind of suture materials in the dog kidneys, when partial nephrectomy was performed through the technique mentioned above. 12 adult mongrel dogs were divided into 4 groups, each consisting of 3 dogs. 2, 4, 6 and 8 weeks after partial resection with intrarenal mass ligations using catgut (0), silk (No.3) and nylon monofilament (No.3), tissue reactions in renal parenchyma were compared histologically and are summarized as follows: 1. Tissue reaction induced from catgut revealed to be those of rather marked foreign body granuloma which is noted in 2 weeks and persisted up to 6 weeks. This foreign body type granuloma delayed early surgical wound healing and seems to be related with its absorption. 2. Tissue reaction induced by silk revealed to be those of mild to moderate foreign body granuloma which is noted in 2 weeks and 4 weeks group. 3. Nylon monofilament suture induced no foreign body granuloma in dog renal parenchyma and showed early minimal soar formation with minimal mononuclear cell infiltration. 4. Among the catgut, silk and nylon as a suture material in partial nephrectomy, nylon caused early fibrosis and the least tissue reaction in dog renal parenchyma.
Rowe cell 시험을 이용한 재성형 점토의 비선형 압밀 특성에 관한 실험적 연구
李松,全濟晟,金成澤 서울市立大學校 1998 論文集 Vol.32 No.1
Terzaghi's consolidation theory has been applied in many ways, and until now is the stock in trade of geotechnical engineering practice. But this is based upon infinitesimal strain and linearity assumptions. Real soils experience change of compressibility and permeability during consolidation. As noted foregoing, the conventional theory of consolidation is lacking in credibility in that does not express nonlinearity of stress-strain and void ratio-permeability. This is especially so where soft soils are involved. In this paper, experimental studies about characteristics of nonlinear consolidation are carried out by Rowe cell consolidation & permeability tests. There are two significant parts of this study. First, comparisons with resulst of oedometer tests show that soil-nonlinearity is main features during consolidation proess. Second, in highly compressible soil the finite strain consolidation theory, which the limitation of small strain has been removed and the changes in soil compressibility and permeability have been taken into account, must be applied. And evaluations of finite strain consolidation parameters g (e) and λ(e) is carried out for void ratio and effective stress.
문화지형체계 읽기를 위한 '토포스'의 새로운 정의와 방법론적 가능성
김성택 한국프랑스학회 2013 한국프랑스학논집 Vol.81 No.-
Cet article se propose d'exposer pour la lecture du topographisme socio-culturel une nouvelle définition des topoï et ses possibilités méthodologiques. La notion de topos, dont le nom nous vient d'Aristote, se redéfinit depuis un certain temps selon la Théorie de l'argumentation dans la langue, formulée par Anscombre et Ducrot. Ils supposent préalablement que la base topique de la langue fonctionne d'après la règle inférentielle à caractère graduel : “Plus un objet O a la propriété P, plus un objet O' a la propriété P'”. Cette forme d'opérateur argumentatif nous permet de comprendre que les concepts socio-culturels sont actualisés à l'aide de principes généraux, des lieux communs que l'on appelle des topoï. Il s'ensuit que toute langue possède des topoi à caractère de “non-nécessité argumentative”. D'ailleurs, les valeurs sociales et idéologiques nous s'imposent pour remplir cette forme argumentative des topoï̈. C'est un consensus social, un point de vue, une position, une idéologie etc. qui règnent dans le domaine de valeurs se référant aux 5 types principaux de lieux communs: lieux de quantité, lieux de la qualité, lieux de l'ordre, lieux de l'existant, lieux de l'essence. Avant de développer les possibilités méthodologiques des topoï̈, il faut mettre en revue leurs deux caractéristiques essentiels: la convergence sémantique comme thématique qui a le pouvoir de structurer et mythifier des motifs, des sujets, des thèmes et des idées contiguë̈es, et l'intertextualité qui permet aux topoï̈ une continuité et une pratique de l'“habitus”. On n'oublie pas aussi d'ajouter la possibilité d'un comparatisme entre genres, nations, civilisations et générations, ce qui nous fera enjamber une distance spatio-temporelle.