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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.
이재숙,조윤정,손정원,이갑노 고려대학교 의과대학 1994 고려대 의대 잡지 Vol.31 No.3
To evaluate the relationship between c-myc amplification and leukemic transformation. The Southern hybridization was performed in 23 clinical leukemic samples(4 cases of ALL, 17 cases of ANLL, 1 case of CML, 1 case of CMMoL), 6 ATCC leukemic cell lines(ATCC CCL 213 Daudi;Burkitt lymphoma, ATCC CCL 243 K-562;chronic myelogenous leukemia, ATCC CRL 2582 Molt-4;T-cell acute lymphoblastic leukemia, ATCC CCL 240 HL-60; promyelocytic leukemia, ATCC CCL 246 KG-1;acute myeloblastic leukemia, ATCC CCL 246.1 KG-1a;acute myeloblastic leukemia), and 6 cases of nonleukemic bone marrow aspirates. The results were summarized as follows. 1. In leukemic cell lines, HL-60 showed marked c-myc amplification(6x) compared to negative control and KG1 showed mild amplification(2x). However, there was no c-myc amplification in K-562, KGla, and molt-4. 2. In leukemic samples, mild c-myc amplification(2x) was observed in 3 cases of 17 AML, but no amplification was observed in 4 ALLs, 1 CML, and 1 CMMoL. 3. In nonleukemic samples, one case of reactive marrow hyperplasia showed mild c-myc amplification (2x). From the above findings, it was concluded that the c-myc amplification was more common in acute nonlymphocytic leukemia than other types of leukemias, c-myc amplification appeared not only enough to transform hematopoietic cells but expression of other complicated oncogenes together with it cotributed the development of leukemia.
이인현,장원,백영,도갑수,최재규 한국환경과학회 1997 한국환경과학회지 Vol.6 No.6
In order to analyze the water quality variation of surface water around the Sudokwon landfill site, seasonal variations of water temperature, pH, DO, BOD, COD, SS, NH_3-N. NO_2-N, and NO_3-N were examined at 10 sites from January to December, 1996. It was found that the estimates of COD, DO, SS, and NH_3-N were increased compared with the results of environmental impact assessment carried out in 1988. Higher estimates of COD, DO, and SS were due to industrial and agricultural wastewater, and the increase of NH_3-N at Jangdo reservoir site was due to the leachate from the landfill. In particular, the estimate of SS was found to be increased by the soil wash from the landfill during the heavy rainy days.
반묘추출물이 생쥐 신장조직의 alkaline phosphatase 활성에 미치는 영향에 관한 실험적 연구
배기원,이흥식,한갑수 中央醫學社 1973 中央醫學 Vol.24 No.5
The effect of cantharides extracts on the alkaline phosphatase activity was examined in mice kidney. The experimental animals were injected with cantharides extracts by intraperitoneal injection with single dose of 0.04 mg. per Gm. bo4y weight. Alkaline phosphatase activity with histochemical stain by modified Gomori method were examined from 1 hr. to 32 days after injection. The following results were obtained; 1. Alkaline phosphatase activity seemed to have the tendency to be decreased from Mr. after injection and presented the lowest activity at 24 hrs. after injection. 2. The renal alkaline phosphatase activity has recovered from 48 hrs. and observed the same as control group at 8 days after injection. 3. The concentration of renal alkaline phosphatase was marked at the proximal convoluted tubules, especially brush border.
유갑종,강창수,이충원,엄용균 경북대학교 산업기술연구소 1989 産業技術硏究誌 Vol.17 No.-
In the recent development of internal combustion engine, considerable increase in speed and power has been accomplished. This achievement, however, brought up various problems due to the excessive piston temperature which becomes a crucial factor in engine durability. In this research, temperature distribution in a piston was investigated experimentally and theoretically with varied operation speed in unloaded condition. The method of temperature measuring is L-link system. The theoretical study was carried out by using the finite-element method. A three-dimensional model which simulates a half of piston has been utilized and the surface temperature measured by L-link. System has been used for the theoretical boundary conditions. The results obtained form the analysis of a piston of four-cycle gasoline engine are as follows; The piston temperature increases directly propotional to the engine speed on the thrust plane of piston crown, the temperature in the region closer to inlet valve is found to be higher than that closer to the exhaust valve, and the heating effect by exhaustion and the cooling effect by suction are shown on the iso-thermal line of crown surface. As the thickness of the crown section increased, the degree of symmetry of iso-thermal line about the center-line also increases. The internal and external temperatures of skirt are almost identical, and the temperature decreases away from fro pin-bos. In the case of pin-bos, the temperature of internal is higher than that of external at the lower part, and the temperature decreases along to the pin-perimeter.
신원철,윤주천,김갑수,최승락,이근억,유주현 江原大學校 産業科學硏究所 1981 産業技術硏究 Vol.1 No.-
In order to use as a starter after drying, optimum growth conditions of Str. thermophilus and L. bulgaricus were investigated. The results were as follows. The growth of Str. thermophilus was reached at stationary phase after 12 hours incubation and L. bulgaricus was after 6 hours. Str. thermophilus was grown well, in the medium containing 10% of skim milk, 2%5 of sucrose, 0.1% of KCl and 0.015%(v./v.) of soy-sauce. In the case of L. bulgaricus, 10% of skim milk, 2% of glucose, 0.5% of bacto-peptone, 0.1% of K₂HPO₄ and 0.02% of pyridoxine was suitable for the maximum growth.
일산화탄소 중독이 흰쥐 간조직에 미치는 영향에 관한 조직화학적 연구 : RNA 및 DNA 변화에 대하여 Changes of RNA and DNA content
한갑수,이흥식,배기원 최신의학사 1975 最新醫學 Vol.18 No.6
The present investigation was undertaken with the aim of studying the effect of carbon monoxide on the cytoplasmic RNA and nuclear DNA content of hepatic cells in rat. For this purpose, rat was poisoned to 0. 1%, 0.25 % and 0.5 % carbon monoxide for 15 minutes to 24 hours. The RNA and DNA content was determined by the histochemical method. The following results were obtained: 1. The decrement of RNA content was began at 8 hours after 0. 1 % carbon monoxide poisoning and was continued until 24 hours but DNA content changed at 24 hours. 2. In 0.25% carbon monoxide poisoning group, the decrease of RNA and DNA content was began at 2 hours after poisoning and was continued until 4 hours. 3. In 0.5% carbon monoxide poisoning group, the RNA content decreased at 30 minutes after poisoning but was continued 60 minutes. The decrement of DNA content was at 60 minutes.
부하 및 점화시기가 내연기관의 피스톤 온도분포에 미치는 영향
유갑종,이충원,엄용균 경북대학교 산업기술연구소 1989 産業技術硏究誌 Vol.17 No.-
An experimental study was carried out concerning the effect of load and spark timming on the temperature distribution of pistion of I.C engine. The temperature distribution of piston was measured by L-link system method as following conditions; The revolution of engine operated from 1500 R.P.M to 3500 R.P.M with increasing the load, making a knocking each revolution and varied ignition time. The result of experiment was as follows; The piston temperature increase directly proportional to the engine speed and the load on the surface and the inner of piston crown, the temperature in the region of inlet valve is higher than that of exhaust valve. The temperature distribution at the surface of piston crown is not symmetrical type, but is the higher at the location of spark plug. The temperature of piston skirt decreases along to the downward.