체력단련이 숨참기동안 및 회복기의 혈압과 심박동수에 미치는 영향

이영만,윤봉영,윤성수,김준곤,이상렬,김성호,배계숙 최신의학사 1984 最新醫學 Vol.27 No.11

工業系 敎師의 再敎育을 위한 硏修 프로그램의 開發에 관한 硏究

李來然,劉承坤,羅聲雄,禹鎬吉 충남대학교 공업교육연구소 1983 論文集 Vol.6 No.2(A)

This study is intended to provide a more effective curriculum for the In- Service Training Program of industrial technical teachers. The curricula which have been used during last five years were carefully analyzed and the main conclusions are suggested as follows; 1) It must be given to the teachers to take optional subjects. 2) Experiments should be reinforced make up for the understanding of theory. 3) Practical studies and factory investigations have to be provided to the teachers during the In-Service Training Program. In case of needs, the expert engineer of industries become a instructor to the teachers for explaining the up-to-date industrial techniques and theories. 4) The teachers who attending the In- Service Training Program should take an active interest in the program for getting a remarkable results.

2000 세계 도자기 프레엑스포에 관한 연구

이승곤,공자원 경희대학교 관광산업정보연구원 2000 觀光産業情報論集 Vol.2 No.-

Local autonomous entities have tried to activate the economy by hosting various festivals taking advantage of their images to create their own identity, promoting the pride of the inhabitants, building the infrastructure, induce the productive effect and develop the tourist resources. The festivals are, however, not systematically organized without the active public participation. Most of them have not been used as a means of successful area development as they are make-shift events. But the 2000 world ceramics pre-expo, the subject of this study, has been regularly held for a relatively long period in Ichon, Yoju and Kwangju. The questionnaire found that the festival was successful with active public participation, effective creation of local images and great contributions to the local economy. In spite of the success of the festival, it has many urgent problems to solve; uniformity of the programs, lack of financial independence, shortage of experts and improper policies. Korea is rich in resources for local festivals with great potential of developing cultural products. The only problem is the lack of creative ideas translating the potential into reality. Local authorities have been recognizing the problem. They blindedly follow western examples without considering their own history and reality All they need is to develop idea and strategies to preserve uniqueness of their culture, contributing to the local economy at the same time. Finally, the citizens should have the initiative in all areas of the festival in order for the festival to be successful. The inhabitants actively change their own living space into more positive area with their own creative will and effort. If they produce diversity, identity and creativity, the festivals would become more meaningful.

Pentadecafluorroctyl Polyacrylate에 依한 Nylon 6 纖維의 撥水加工에 關한 硏究

李廷玟,任洪彬,劉承坤,裵基瑞 충남대학교 공업교육연구소 1978 論文集 Vol.1 No.2

This study has been investigated on the effects of fluorochemical repellent agent on the water repellent finishes of nylon 6 fibre with pentadecafluorooctyl polyacrylate. Contact angles of various liquids on the fluorochemical treated nylon 6 surface are measured. The critical surface tension of about 46 dynes per cm on the nylon 6 surface is resulted. The effect of fluorochemical repellent was most favourable at 1% concentration repellent agent and the critical surface tension is resulted the value of about 10.5 dynes per cm. The use of antistatic agent in the fluorochemical repellent was most favourable below 0.5% concentration. It was found that the repellent effects were improved by repeated treatments with the solution of lower concentration of repellent.

優秀工業系 實科敎員養成을 위한 工業敎育大學 敎育課程 改善에 關한 硏究 : 工業敎育學部를 中心으로

李廷玟,任洪彬,李載元,李來然,金澤基,劉承坤 충남대학교 공업교육연구소 1983 論文集 Vol.6 No.2(A)

This paper is studied to improve the curriculum of the College of Industrial Education of Chungnam National University, which is more helpful for the students to become a competent teacher of technical high school. The thesis includes the curriculum of general, professional, technical subjects and so on. The main conclusions are summarized as follows; 1) The current curriculum of the College of Industrial Education was formed on a wholesale manner following the basis of standard courses for some characterized engineering colleges. But the suggested is conformed to the curriculum system of CNU in credits and hours. 2) The current technical subjects are mainly based on the curriculum of college of engineering, but the newly suggested technical subjects are conformed to the curriculum of technical high school as following that some departments of engineering are founded in the College of Industrial Education. 3) In current curriculum, the ratio of reguired technical subjects to elective technical subjects is 85:15. In suggested curriculum, the ratio of it is largely changed to 45:55 for effective operation of minor cousres. And the lists of the subjects for minor courses are changed from subjects for College of Science to subjects for College of Engineering.

患者로부터 分離同定한 病原性 大腸菌의 性狀에 관한 硏究

염곤,劉承兆,李善煥 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.1

Strains of Pathogenic Escherichia coli isolated from the diarrheal patients in the Seoul were 9 serotypes that were documented previously in the international literature as associated with Pathogenic E. coli. Of 13 strains, there are 9 serotypes and 3 strains are Enterotoxigenic E. coli. The serotypes of Enterotoxigenic E. coli were 06 : K15, 0148 : K, 025 : Kl. In order to detect the heat-stable enterotoxin of Enterotoxigenic E. coli, supernants of CA-YE culture were administered into the intestines of suckling mice and fluid accumulation in the intestine were measured after 4 hrs., by weighing. In the results of suckling mice test, it have proved that 2 strains (06 : K15, 00148 : K) had produced positive tests. In the results of the antibiotics susceptibility test, Nitrofurantion and Nalidixic acid about the urinary tract infection have susceptibility but Tetracyclines such as Doxycycline, Oxytetracycline have high resistance. Although Neomycin had been treated skin or wounds, generally it had resistance because we suggest that it have cross-resistance with kanamycin which is similar activity and widely treated the disease in the pathogenic E. coli.

파이온 비임 요법의 물리에 관한 연구

金承坤,姜正求,李延玉 全北大學校 1994 論文集 Vol.38 No.-

Monte Carlo calculations were performed for the transport of the photon, electron, and pion in the water phantom in an effort to quantify the effects of the three ionizing radiations for cancer therapy. Comparison of energy deposited by the three particles as a function of penetration shows that in the case of the negative pion, the normal Bragg peak is greatly enhanced by the energy deposited due to nuclear capture of the pion by a nucleus and the subsequent nuclear reaction. The results clearly indicate that a preferred method of radiation therapy is to use energetic negative pions which has a number of advantages over the other two particles.

시멘트 사일로의 적분생성억제

양승혁,이병곤 한국안전학회 2003 한국안전학회지 Vol.18 No.2

The object of this research is to prevent the industrial accidents which frequently occurred in breaking the coating in cement silo. Research was conducted to identify the cause of the coating formation, and the model experiment of aeration system was done to investigate the effect of moisture air on the coating formation. The results show that dehumidification of supply air in aeration system is the most important factor to suppress the coating formation, and the refrigerated low pressure air dryer applicable to the aeration system of cement silo was newly designed and developed. When this air dryer is applied to the cement silo, 88% of the moisture component of supply air can be reduced. Therefore the cleaning cycle extends over twice, and it contributes to the decrease of industrial accidents and cleaning cost.

毒素生産大腸菌의 生化學的性狀에 관한 硏究

염곤,劉承兆,李長勳 成均館大學校 科學技術硏究所 1985 論文集 Vol.36 No.1

The pathogenesis of gastrointestinal infections caused by E. coli has been attributed to the ablility of some strains to produce enterotoxins or to invade the intestinal mucosa directly. Enterotoxigenic strains may produce either a heat-labile toxin(LT), a heat-stable toxin(ST) or both LT and ST. The heat-labile enterotoxin of E. coli causes a diarrhea with a delayed onset and similalar to cholera toxin in its mode of action and immunogenicity. In contrast to LT, ST is of low molecular weight, nonimmunogenic, and not neutralized by cholera or LT antitoxin. The infant mouse test was used for the detection of ST and EnzymeL-inked Immunosorbent Assay was used to dettect LT, and serological test was used to detect Enteropathogenic E. coli and Enteroinva sive E. coli. And biochemical examinations were done. 1. Strains of pathogenic E. coli isolated from the diarrheal patients in Seoul were identifided in 68 (21.3%) of 319 cases. 2. Stranis of enterotoxigenic E. coli was detcetected in 56 cases; 49 were positive for heat-labile enterotoxin and 1 was positive for only the heat-stable enterotoxin. 3. Strains of enteropathogenic E. coli was detected in 10 cases. 4. The serotypes of enteropathogenic E. coli were 026 : K60, 055 : K59, 0111 : K58, 0119 : K69, 0126 K71, 0128 : K67, 01 : K51. 5. D-mannitol, lactose, maltose were used for growth in toxigenic E. coli. Malonate utilization, urease activity, gelatin liquefaction were negetive in enteropathogenic E. coli, enterotoxigenic E. coli and enteroinvasive E. coli.

UO_2 핵연료봉에 대한 감마선의 투과율 측정

金承坤,姜正求,李延玉 全北大學校 1993 論文集 Vol.36 No.-

A depleted uranium dioxide pellet(φ=12.1nun, l=4.4mm) irradiated in KAERI TRIGA Mark-Ⅲ Reactor was measured with a HPGe detector to determine the product of transmission factor of gamma rays within the source itself and the detector efficiency as a function of energy using gamma rays emitted by fission products ^140L_a, and ^144P_r. The results appear markedly different from the detector efficiency, and the reasons for the deviation were contemplated by extracting a transmission curve as a function of gamma ray energy.