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대도시의 주거/도로변 지역 및 배경 지역의 대기 중 입자상 다환 방향족 탄화수소의 특성
장종대 ( Jong Dae Jang ),신승호 ( Seung Ho Shin ),조완근 ( Wan Kuen Jo ) 한국환경과학회 2010 한국환경과학회지 Vol.19 No.7
The present study aims to evaluate the characteristics of atmospheric polycyclic aromatic hydrocarbons (PAHs) pollution in roadside and residential areas of two Korean metropolitan cities (Seoul and Incheon) and a background area (Seokmolee). This purpose was established by analyzing temporal and spacial concentration distribution of total and 7 individual PAHs, which were extracted from ambient particulate matters, and by utilizing a multivariate statistical method (principal component analysis, PCA) for the qualitative determination of potential PAH sources. Target PAHs included benzo(a)anthracene (BaA), benzo(a)pyrene (BaP), benzo(b)fluoranthene (BbF), benzo(k)fluoranthene (BkF), chrysene (Chr), dibenzo(a,h)anthracene (DahA), and indeno(1,2,3-cd)pyrene (IcdP). For all surveyed sites, the concentrations of total PAHs were higher in winter season than in other seasons. However, the concentrations of individual PAHs varied with surveyed sites. In both residential and roadside sites of Seoul and Incheon, BbF revealed the highest atmospheric levels. For all 7 target PAHs, the ambient concentrations were higher in Seoul and Incheon than in a background area (Seokmolee). In both residential and roadside areas, the concentrations of 4 target PAHs (BaA, BbF, BkF, DahA) were higher in Incheon than in Seoul. However, both the residential and roadside Chr concentrations were comparable in Seoul and Incheon. In addition, the residential IcdP concentrations were higher in Incheon than in Seoul, whereas the roadside concentrations were higher in Seoul. The roadside and residential BaP concentrations exhibited the reverse result to the IcdP concentrations. An PCA analysis suggested that atmospheric PAHs in both residential and roadside areas would be due to combined effects of several potential sources such as gasoline- and diesel-fueled vehicles, coal/oil combustion, and waste incineration.
5개 생물학적 특성에 의한 Mycobacteria 제Ⅳ군의 균집합체 분류 및 M. fortuitum-chelonei Complex의 동정
최철순,장종대,양용태 중앙대학교 의과대학 의과학연구소 1985 中央醫大誌 Vol.10 No.3
Mycobacteria GroupⅣ or rapid growers were classified into 12 clusters by the combined use of the five test characters, i.e., pigmentation on Lo¨wenstein-Jensen medium containing soluble extracts (crocin) of Gardenia jasminoides(referred to L-J crocin medium), arylsulfatase, nitrate reductase, iron-uptake and 5% NaCl tolerance, and the differential identification of Mycobacterium fortuitum and M. chelonei by the 5-test characters was evaluated with reference strains and isolates from sputa of patients with pulmonary tuberculosis-like diseases. In addition, the 5-day crocin reaction with different species or clusters of mycobacteria Group Ⅳ on L-J crocin medium assessed. Of 12 strains of M. fortuitum 9 strains() 75.0% belonged to cluster 5a, 2(16.7%) 5b and one(8.3%)7a, respectively, and of two strains of M. chelonei one strain belonged to 8a and the other 8b. The 5-day crocin test also proved to be valuable in the rapid presumptive differentiation of M. fortuitum complex from other rapid growers.
김계윤,장종대 대한골절학회 1993 대한골절학회지 Vol.6 No.2
Involving articular surface and surrounding soft tissues, fractures of the tibial condyle were recommended anatomical reduction, rigid fixation and early joint motion by most authors. We annalyzed 25 cases to which 1 year follow up was available, treated with open reduction and internal fixation at the department of orthopaedics, Dong Kwang Hospital from Apr. 1989 to Mar. 1992. The results were as follows; 1. The incidence was more common in male, and the highest incidence of age was in the fifth decade. 2. Traffic accident was the most common cause of injuries. 3. According to Schatzker classification, type II and IV were common. 4. 7 cases of fibular head fracture and 12 cases of soft tissue injuries were associated. 5. According to Hohl and Luck's criteria, 18 cases out of total 25 cases could be classified into acceptable criteria.