溶劑洗濯에 관한 實態調査 : 大邱市內 드라이크리링業者와 消費者를 중심으로

徐英淑,蘇珠姬 慶北大學校 師範大學 1984 敎育硏究誌 Vol.26 No.-

The purpose of this paper is to find out the problems of dry-cleaning and to make some proposals for consumers, dry-cleaners, manufacturers of textile goods and administrative authorities. It is desired that the result of this resaerch will help; 1) protect consumer and dry-cleaner's interests 2) enforce the proper process in dry-cleaning 3) induce the improvement on textile-management upon the basis of investigation into the actual dry-cleaning condition in Daegu region.

신이식후 거부반응으로 적출된 이식신 혈관벽의 Dendritic cell에 대한 면역조직화학적 연구

김병주,박호철,고석환,주흥재 大韓移植學會 1993 Korean Journal of Transplantation Vol.7 No.1

생물막 유동층 반응기에서의 미생물 농도 예측

추석열,서정호,박태주,김동석,송승구 부산대학교 환경문제연구소 1991 環境硏究報 Vol.9 No.-

This experiment was carried out to predict biomass concentration of attacted biofilm and to investigate fluidized-bed biofilm reactor (FBBR) performance of treating high organic loading rate. A number of experiments were conducted by increasing organic loading rate from 10kgCOD/㎥·day to 80kgCOD/㎥·day with superficial upflow velocity, 0.47cm/sec, operationg temperature, 22±1℃ and pH, 7±0.1. Glucose was used as a synthetic substrate. COD removal efficiencies were remarked as 73 to 96%, and the biomass concentration was increased up to 37,000mg/1. Under this experimental conditions, the FBBR was most efficiently operated at the F/M ratio of 1.7 and the biofilm thickness of 420㎛.

工業敎育大學 敎育改善에 관한 硏究(Ⅲ)

宋周鎬,李昌岬,洪元杓,孟琦錫,任洪彬,李廷玟,李載元,李來烈,權五憲,金振淳,李文洙 충남대학교 공업교육연구소 1982 論文集 Vol.5 No.1

This paper aims at providing a concrete plan to improve technical and vocational teacher education in the College of Industrial Education of Chungnam National University. It is intended to propose a practical four-year regular and short-term course. Also, the estimated required facilities is included in this study as well as their management. The main conclusions and recommendations are summarized as follows; 1) The numbers of students enrollment should be reduced to 220 students which is the approximate number of future demand. 2) In order to offer to the students a broader education and to cope with the increase/decrease in demand of technical and vocational teacher within a specific field, the 8 department existing at the present (Department of Architecture Engineering Education, Civil Eng. Educ., Metallurgical Eng. Educ., Mechanical Eng. .Educ., Electrical Eng. Educ., Electronic Eng. Educ., Industrial Chemistry Educ. and Industrial Technology Educ.) would be combined into 5 (Department of Construction Engineering Education, Mechanical Eng. Educ., Electrical Eng. Educ., Industrial Chemistry Educ. and Industrial Technology Educ.). 3) The short-term course program is recommened to provide additional training and education to those candidates who already have experience in technical fields to meet an occasional demand. 4) It is necessary to add the Teaching Profession Section in the administrative organization of the College.

황해 동남 해역의 수괴지표성 요각류 및 모악류의 분포와 수괴특성

박주석,이삼석,강영실,이병돈,허성회 동의대학교 기초과학연구소 1993 基礎科學硏究論文集 Vol.3 No.1

Distribution of indicator species of copepods and chaetognaths were studied as an indicator species of water mass in the southeastern area of the Yellow Sea. Undinula darwini, Lucicutia flavicornis, Pleuromamma gracilis, Euchaeta resselli, Euchaeta plana and Sagitta enflata were found to be reliable indicator species for determining warm water mass. Of these species, E. plana and E. russelli have a weak tolerance on the low temperature. Sagitta crassa was indicator species of neritic waters: Sagitta bedoti was that of mixing waters. Centropages agdominalis represented neritic cold waters. In February U. darwini, L. flavicornis, P. gracilis, E. russelli, E. plana and S. enflata occurred in the western waters of Cheju-Do where warm waters over 14℃ occupied. Centropages abdominalis occurred in the northern area beyond Chindo with water temperature less than 10℃. E. plana, E. russelli and S. bedoti were found at the regions between Cheju-Do and Chindo where the water temperature was 12∼14℃ corresponding to the mixing waters. Based on cluster analysis and T-S diagram in February three different water masses were identified from the south to the north. In August, water masses were analyzed at two different layers, 0∼20m and 20m∼bottom layers, separated by thermocline depth. In 0∼20m layer, E plana and E. russelli were found from the western waters of Cheju-Do to Daehuksando. In 20m∼bottom layer, E. russelli and E. plana occurred at the northwestern waters of Cheju-Do with the water temperature warmer than 12℃. C. abdominalis was found at the northern area beyond Chindo. Based on the cluster analysis and T-S diagram in August three different water masses at 0∼20m and 20m∼bottom layers were identified from the coast to the offshore. C. abdominalis was found at the adjacent water of Chindo at 0∼20m layer and the northern area beyond Chindo at 20m∼bottom layer. This fact suggested that the cold water mass existed at the adjacent waters of Chindo in summer.

機械工學敎育科 敎科課程 改善에 關한 硏究

金基曾,宋周鎬,朴鍾鎬,李盛魯,洪錫雨 충남대학교 공업교육연구소 1981 論文集 Vol.4 No.1

Change of the society owing to the national economic progress requires the reform of the education to produce qualified technical high school teachers in the university. In response to this need, the study on the curriculum for the mechanical engineering education in the university is inevitable. Currently, the curriculum requires 160 credits for graduation which are composed of 32 credits for the general subjects, 26 credits for the engineering basic subjects, 22 credits for the pedagogic subjects, and 80 credits or the major subjects. The study is limited only to the organization of the major subjects. As a result of this study, the new curricuiculum is presented and following conclusions are obtained; 1) Basic subjects is the major consolidated. 2) Separated courses for elective subjects are unified into one. 3) 80 credits for she major convist of 40 credits of required subjects and 40 credits of electives. 4) Theory and practice in the major subjects have proportions of 60 and 40 in classhour respectively. 5) To supplement the practice, field practice is systemtized and intensified its duration up to 2 months, but no credits are necessarily assigned to it.

방사선 조사를 받은 두경부 병소의 재건을 위한 유리피판술

채수욱,고경석,김주봉,박상훈,한상훈,이택종,남순열,김상윤 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3

Radiation therapy is an effective cancer treatment modality as a primary treatment in early cancer and as an adjuvant treatment in advanced cancer, especially in head and neck lesions, but it also causes irreversible chronic damages to overlying normal tissues that may lead to wound complications. As well, at the microscopic level, radiation injury causes both stasis and occlusion of small vessels. Therefore, surgical reconstruction of previously-irradiated lesions in the head and neck poses a great problem. Fifth-six patients with head and neck lesions underwent 57 microsurgical reconstructions between 1990-1998. Thirteen patients were irradiated before surgery. The previous radiation dose was 30∼75.6 Gy. The free tissue transfer was successful in 52 of the 57 microsurgical reconstructions(91.2%). The success rate was 92.3%(12/13) in previously-irradiated patients and 90.9%(40/44) in nonirradiated patients. Postoperative complications, such as flap loss, fistula, and infection, developed in 4 irradiated patients and 8 nonirradiated patients. Overall complication rate was 30.8%(4/13) in previously-irradiated patients and 18.2%(8/44) in nonirradiated patients. Although the failure rate of previously-irradiated patients was higher than that of nonirradiated patients, there was no statistically significant difference between them. Thus, free tissue transfers in patients with previously-irradiated head and neck lesions are suitable for one-stage reconstruction.

단일 band 모델에서의 Wannier-Stark Localization?

손기수,김영주,김석환 경북대학교 교육대학원 1988 논문집 Vol.20 No.-

From recent paper by Emin and Hart and comment by Kleinman we solved the error in their paper, and proved the existence of Wannier-Stark localization for one band model, using the determinant of coefficients. This Wannier-Stark localization is affected by different wave vector.

수도용 강관의 용접성에 관한 연구(제2보) : 용접부의 잔류응력 해석 Analysis for residual stress of the weldments

이영호,이규천,나석주 충남대학교 공업교육연구소 1995 論文集 Vol.18 No.1

In this study, the analysis of residual stresses of the weldments were carried out to evaluate the safety of the steel welded pipes using a finite element method for the butt-weld joint and the lap-weld joint. On the other hand, to compare the analytic results with actual ones, the residual stresses were measured experimentally. The main conclusions can be summarized as follows ; 1. It was appeared that the tensile residual stresses were distributed in the weldment and the maximum tensile strength was about 50 ㎏f/㎟ which was the same level of the yielding strength in base metal. 2. In case of the butt-welded joint, the value of tensile strength decreased with increasing the distance from the weld metal or fusion line. On the othe hand, it was appeared that the compressive strength exsisted in the weld-bead. 3. The measurement value of maximum residual stress in the welding direction was 9.2㎏f/㎟ and was much lower than that of the theoretical analysis.

천이금속 표면에서의 수소의 동력학 : 수소의 화학 흡착, 방출, 확산에 관하여

손기수,박동수,최상돈,김석환,김영주 慶北大學校 物理化學硏究所 1986 硏究論文集 Vol.7 No.-

S.M. Ko, L.D. Schmidt 등에 의하여 제시된 표면의 bulk내의 원자, 진공 근처 표면에서의 분자의 존재, 그리고 T. Engel, U. Kuipers 등에 의해서 제시된 진공과 bulk 사이에서의 분자와 원자간의 상호 변환 가설을 합쳐 진공과 접한 표면의 단 원자층에 화학흡수층을 설정하여 새로운 model을 만들었고, 이 model에 의하여 표면과 bulk 및 진공 사이에 일어나는 모든 과정 즉 표면과 bulk 사이의 difussion과 adsorption, 화학 흡수층에서 분자가 dissociation 과정을 거쳐 표면에 adsorption 되거나, recombination 과정을 거쳐 분자로 desorption 하는 과정등을 모두 설명할 수 있는 결과를 얻었다. 나아가서 평형 상태하의 표면 fraction과 화학 흡수층내의 분자의 시간분포, desorption하는 분자들의 시간 분포함수를 얻었다. 온도에 대해 peak amplitude와 log(θ/1-θ)의 값을 얻어서 실험치와 비교했으며, 수소원자의 desorption fraction을 얻었다. Proposing a new model which includes two states model and chemisorption layer right above the surface atomic layer which interrelates the atoms in bulk and the molecules in vacuum, the diffusion from the surface to bulk, adsorption on surface from chemisorption layer and desorption from chemisorption layer are explained. We also get the distribution of molecules versus time at the chemisorption layer, log(θ/1-θ), and atomic peak amplitude on surface versus the reciprocal temperature on equilibrium condition. These results are turned out to be good results. Furthermore by the use of above results, we derive the desorbing fraction as a linear function of inverse temperature.