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      • KCI등재

        척추체의 골파괴를 일으키는 병소 : 염증성질환 및 악성종양의 전산화단층촬영 소견 과 감별진단

        최석진 대한영상의학회 1993 대한영상의학회지 Vol.29 No.5

        The CT findings and their differential points were evaluated by reviewing the CT scans of 47 patients with destructive lesions of vertebral bodies which included tuberculous spondylitis (23), pyogenic infection(9), syphilitic spondylitis (1) and malignant lesions(14). Twenty-one (91.3%) of 23 patients with tuberculous spondylitis showed mixed osteolytic and osteosclerotic patterns of bony destruction. Six(66.7%) of 9 patients with pyogenic infection and 10(71.4%) of 14 malignant lesions showed osteolytic pattern of bony destruction. Thirty (90.9%) of 33 infectious lesions including pyogenic infection and tuberculous spondylitis involved intervertebral disc, while the involvement of intervertebral disc was not found in malignant lesions. The Swiss-cheese appearance of bony destruction was commonly seen in tuberculous spondylitis, but pyogenic infections and malignant lesions more commonly revealed geographic or moth-eaten appearance. The sequestral pattern and sclerotic rims in and around bony destruction were mainly seen in tuberculous spondylitis, and they were thought to be specific findings in tuberculous spondylitis. CT of the spine appears to offer the detailed the detailed findings of vertebral body destruction and may be a useful adjunct in differentiation between tuberculous spondylitis, pyogenic infections and malignant lesions of the spine.

      • 商業地理學硏究序說

        崔錫珍 동국지리학회 1985 東國地理 Vol.- No.6

        Marketing geography is a specific field of economic georgraphy and it actually helps the geographers to solve problems related with marketing. Furthermore, it is given much weight, in to day's urban geography research, in terms of its usefulness for the explanation of the hierarchy, the functions and the patterns of an urban community. Marketing geography started to be researched and developed because of the earlier modern times' growing interest in the international trade, the wholesale and/or retail trade, and the marketing areas. Among them, marketing areas became the subject of a fullfledged research for the first time in 1930's. and further researches on that subject have been carried out, with much emphasis placed on the spatial system analysis through "Central Place Theory", especially since B.J.L Berry's research in the late 1950's. In case of Korea, the marketing geography was introduced first, in the late 1960's arousing some interest and has been researched since the late 1970's. But as a matter of fact, comprehensive researches on its specific fields are not sufficient yet. The research fields of the marketing geography are different according to the geographers. However, its specific fields of research can be roughly classified such as the marketing areas, the measurement of a trading area, the shopping street and the wholesale and/or retail trade, etc. In other worlds, the chief and important subject of research of the marketing geography is to examine closely the characteristic features of the commercial districts. To be more specific, to explain how the commercial activities such as a wholesale and a retail are done in the commercial districts. Nowaday's research trends on each field of the marketing geography are roughly as follows; 1. Trading areas are examined closely: The scope of the trading areas and their changes are closely measured and studied. Beside, the structures of the trading areas are characteristically explained in terms of point, line, surface and flow. 2. The characteristics and the functions of the markets, concerete as well as abstract, are explained in connection with the location features of the markets, and also the changes of the markets according to the times are searched. 3. Researches on the wholesale trade are not sufficient, compared with those on the retail trade. That is because the circulation volume of the wholesale trade is very large and its trading area is very broad and complicated. But in today's geographical research, many efforts are being made to explain the pecularities and the differences in from the initiation and the location of the wholesale trade to its changes. 4. The retail trade, an especially much interest-arousing field of the marketing geography, is a good subject to be researched fullfledgedly. The research on the retail trade needs placing an emphasis on its conditions of location, the specialization and development according to its patterns, the formation of its hierarchy and its distribution. Recently researches on the consumers' behavioural patterns are increasingly carried out. 5. shopping street is a place in which the wholesale and/or retail activities are collectively done, and it is thought very important as a symbol of an urban community. In economic geography, this shopping street is considered, in an economic and commercial aspect, to be an element of economic activities. The distributions and the commercial functions of this shopping street are regarded as very important as a spatial area of an urban community. Therefore, the shopping street has become the subject of research in various points of view. By the way, in the urban geography, the shopping street is closely studied, as a constitute of an urban community, centering around the aspect of its commercial functions. To conclude, the chief and important task the marketing geography should carry out is to research on the commercial activity districts and the shopping street which is a spatial base for the wholesale and/or retail trade. Researches on the marketing geography should actively be done. For this purpose, the materials and data which have been collected through the previous researches should be utilized very positively.

      • 서울 新村地域의 商街硏究

        崔錫珍 동국지리학회 1986 東國地理 Vol.- No.7

        Shopping street of an urban community are partly responsible for the economy of the community, and represent the regional characteristics of the urban community. The present study is aimed at examining and explaining the distribution and spatial location of shops and stores located in Shinchon area and their functions. Since there are so many universities located in Shinchon, one of sub-centers of Seoul, university students related functions were focused when examining the functions of the shopping streets. The first consideration, when deciding the regional limit for surveying, is given to the land value distribution(fig. 1). And the shopping streets are divided into sight route for convenience of the analysis. The street 1, the main street of Shinchon area, is characteristic in representing every kind of functions. The street 2, a road leaing to Ewha woman's University, shows a predominance in the business of dress, sundries, foreign goods and leatherware, representing an overall characteristics feature of shinchon shopping area. The street 4, a street leading to Yonsei University, and the street 5, an entry road to Sogang University, are distinctively lined with shops and stores providing entertainment and various kinds of services for university students. And the other street are characterized by various kinds of restaurants and every kind of service shops. In terms of function, the majority of business includes on the whole various kinds of restaurant and daily goods. To be distinctive enough, furniture stores are flourishing along the street 1. In spite of the cultural function as university town, there are rare book stores. In terms of vertical function of the street, among the total 1472 stores surveyed, 939 stores (accounting for 63.8%) are located on the first floor, 116 stores (7.9%) on the second floor, 350 stores (23.8%) on the third floor or higher and 67 stores (4.6%) on the basement, these numerical data show that the vertical development of the store buildings are not satisfactory enough. On the first floor, sundaries stores are heavily distribued, and on the second floor or higher, restaurant, clinics, and entertainment shops are chiefly located. This vertical tendency of function is the similar as that of the downtown area of Seoul. To conclude, shopping street of Shinchon area are characterized by flourishing shops and stores of dress, sundries, foreign goods and restaurant among the streets 2 and 4. How-ever, specialization of business by street is not still differentiated on the whole. This problem must be preferentially taken into account when setting up plans for the redevelopment of this area.

      • 유리의 低溫合成(Ⅰ)

        崔錫珍 조선대학교 기초과학연구소 1983 自然科學硏究 Vol.6 No.1

        일반용융법으로 제조 불가능한 조성의 유리를 저온합성법으로 제조하기 위하여 우선 단일성분인 석영유리의 제조조건을 검토하였다. 원료로서의 실리콘 알콕시드의 종류, 가수분해에 필요한 첨수량, pH, 겔의 숙성온도에 따른 고화속도 및 열처리 조건을 조사하였다. 실리콘 알콕시드의 알킬기가 커질수록 물의량이 적어질수록 또 숙성온도가 낮아질수록 고화시간은 길어진다. 건조겔을 열처리할때 250℃이하에서 흡착수 및 미반응 유기물질이 대부분 제거되며 Si-OH 탈수반응은 750℃~800℃에서 거의 완료되지만 그 이상의 온도까지도 수축이 계속 일어나고 있다. Silica glasses were prepared by hydrolysis of alkoxide to form gels, followed by heating the gels at low temperature, below the glass transformation. Gelling time and heating condition was investigated. The higher alkyl radical of alkoxide, the larger amount and the lower pH of water used and the lower aging temperature, we have the longer gelling time, we need. Large portion of water and organic materials were removed below 250℃. -OH of Si-OH was removed below 800℃, but shrinkage of glass took place above it.

      • KCI등재
      • KCI등재

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