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수술칼, $CO_2$ 및 Nd:YAG 레이저에 의한 절개 창상의 치유에 관한 비교 연구
최재선,유선열,Choi, Jae-Sun,Ryu, Sun-Youl 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.1
The purpose of this study was to compare the wound healing process after skin incision using scalpel, $CO_2$ laser and pulsed Nd:YAG laser in rats. After skin on the back was incised 3 cm long, rats were sacrificed at 1, 3, 7, 14, 21 and 28 days. Macroscopic, histologic and immunohistochemical examinations using the collagen type IV and the CD34 antibodies which are necessary to the forming process of new capillary were performed. Results obtained were as follows ; Macroscopically the initial wound healing of the laser group was about $1{\sim}2$ weeks slower than that of the scalpel group. There weren't however any remarkable differences in all groups in 4 weeks after incision. By histologic finding, acute inflammatory cells were more prominent during the initial wound healing in the scalpel group than in the other groups. Epithelialization started in the order of scalpel, $CO_2$ and Nd:YAG laser group after skin incision. By the Masson's trichrome stain, collagen synthesis in the Nd:YAG laser group was more slowly initiated than in the other groups. But it was completed at the $3{\sim}4$ weeks in all groups. Immunohistochemically, collagen type IV and CD34 expression were markedly increased at 2 weeks in the scalpel and $CO_2$ laser group. Meanwhile, in the Nd:YAG laser group, these reactions were observed later tan the other groups. Collagen type IV and CD34 expression were decreased in all groups after 4 weeks. These results suggest that $CO_2$ and Nd:YAG laser showed similar healing process compared with scalpel and a potential substitute for scalpel in skin incision.
최재선(Jae Sun Choi) 한국지역학회 1994 지역연구 Vol.10 No.1
This paper primarily aims to analyze the growth rate differentials of the economic activities in Chung-Nam area. The research has been undertaken to find out the potentials of the economic activities and economic bases in the area. To analyze the economic potentials of the industries, the study employed the economic Growth Rate Differential Analysis by Henderson which is revised form of Shift-Share Analysis Methods. The research employed the employment data according to the standardized two-digit-classification--system during the period of 10 years from 1981 through 1991. The Growth Rate Differential Analysis calculates Total Growth Differentials which are dicomposed into two parts : Weight Part and Rate Part. Total Growth Differential can be calculated as the difference between national growth rate and regional growth rate by industry. The foundings are as follows : First, the economic bases of Chung-Nam area were found to be very weak, largely depending on primary industries such as agriculture and fisheries. Second, there was a great decline in urban industries in Tae Joeon, (,been An and other cities over period of 1971-1981. It. is strongly recommended that the planned items and products of each industrial complex must be reorgnized in a fashion to match those with high competitve power found in this research.
논문 : 현대소설에 나타난 종말론 소고 -정 찬의 「종이날개」, 조성기의 「거대한 망상」, 이승우의 「그의 광야」를 중심으로
최재선 ( Jae Sun Choi ) 한국문학과종교학회 2010 문학과종교 Vol.15 No.3
Novels reflect the times and social circumstances and various lives of the men who live life with many problems and conflicts. This paper showed how much relation between religion and society have and how it effects on human life. The three novels as「Paper Wing」,「Great Delusion」and「His Wilderness」deal with eschatology as a subject matter, especially the great event of October 28 in the year of 1992 in Korea. Generally speaking, christians have an apocalyptic view of history. Some pseudo christians, however, insisted that the end of the era come on a special day. Time-limited eschatology insisted by pseudo christians made many social problems in our society. Finally their conviction was exposed as a false belief. Nevertheless, the harmful effects continue, and some people still indulge in pseudo group. The reason why time-limited eschatology prevailed throughout Korean society is that we have special religious background. Above all, we Koreans have strong syncretism unconsciously in our religious life. In addition, the social, political, and cultural circumstances of modern society brought out various events such as human alienation, war, and big accidents in the world wide nations. So many people felt sense of loss, deprivation, which made them find a certain refuge. But pre-established churches didn`t give sufficient concerns, hope and love for them. For this reason, they came to show antisocial behaviour and pursued another mystic group which has strong solidarity like a group who had strong conviction of time-limited eschatology on the 28th day of October, 1992. The main characters of the novels became a member of pseudo christian group of eschatology, for they have suffered from severe agony in real life. They had no hope and relationship to help them live in the world. Without helping hands of the fellows of the pseudo christian group, they would have fell into despair. But when their anticipation of the Second Coming of Jesus Christ on October, 28 was proved as a false belief, they were disappointed and some people committed suicide. Through this event, the authors want to describe the harmful effects of false belief of the men who believe in the time-limited eschatology in modern society. The spatial backgrounds of the novels such as the subway of New York, Donghaesa (small temple of Buddhism), the wilderness of Israel are the places that both sacred human nature and earthly desire coexist in different formations. Ultimately, the three novels raise questions on the human existence and behavior. And show the things that pseudo- group insisting on time limited eschatology had systemic and religious contradiction in itself. Religion is not the method of escaping reality but a something to bring hope in the future in spite of real agony and sufferings.