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초임계 이산화탄소를 이용하는 친환경 공정에 의한 다공성 고분자의 제조
강세란,홍성수,이민규,이석희,천재기,주창식 한국환경과학회 2004 한국환경과학회지 Vol.13 No.3
An experimental study on the preparation of monolithic porous polymers by environmentally friend process in supercritical carbon dioxide has been carried out. Polymerization mixture composed of a cross-linking monomer, initiator and functional co-polymer was charged in the reactor with sapphire window. After the system was purged with a flow of CO₂ for 15 min, the reactor was pressurized with liquid CO₂ up to 100 bars. The reactor was isolated from and placed back to the system via quick connector for shaking until the mixture had become fully homogeneous. The reactor was then heated and pressurized to the required reaction conditions and left overnight. After cooling and CO₂ evacuation, the polymer was removed from the reactor as dry, white, continuous monoliths. The effect of experimental conditions on the physical properties of porous polymer was systematically examined, and it was found that monomer content had a major effect on the physical properties of the polymers.
중소기업에서의 품질/환경 통합경영시스템 구축 사례 연구
강민석,장원철,박병춘 한국품질경영학회 2003 품질경영학회지 Vol.31 No.1
This study deals with a case analysis on the implementation of ISO 9000/14000 Integrated Management System. The intention is to provide some general guidelines, in particluar, to small-to-medium-sized companies that are planning to introduce the Integrated Management System. First we briefly review each of the ISO 9000 series, ISO 14000 series and Integrated Management System. We then investigate the case of a small-sized company that have built and is successfully operating the Integrated Management System. We start with introducing the company, and then examine the background and the procedure for implementing the Integrated Management System. We investigate effects of the Integrated Management System, which are the main focus of this paper. This study is meaningful in that, to our best knowledge, it is the first field report appearing in the literature in regard to the actual implementation of ISO 9000/14000 Integrated Management System in Korea.
建築物에 있어 太陽電池의 태양광 추적기법 適用 가능성에 관한 實驗的 硏究
강성범,오민석,김회서 대한건축학회 2003 대한건축학회논문집 Vol.19 No.9
The amount of electric power produced by Photovoltaic(PV) depends on the density of daylight incident. In addition to the development of high efficient PV, a study on the methods for maximizing the density of daylight incident to PV surface is essential to increase the production of electric power. In this respect, many studies on light tracking and gathering device have been conducted in the advanced countries such as U.S. and Japan. However, those studies in Korea are still in an early stage. Therefore this study aims to present the optimal tracking system for the application of PV to buildings considering domestic weather condition. In this study, the tracking type, the interval of tracking offset and optimum integration of tracking system were investigated.
강민수,김형석,박승조 동아대학교 환경문제연구소 1995 硏究報告 Vol.18 No.1
This study was on the removal of phosphorus compounds in domestic and synthetic wastewater using iron-anode electrolytic reactor. The experiments were performed at different current, reaction time and flow rate. The results are as follows ; 1. For the synthetic wastewater with the flow rate of 1.5 ℓ/min and 0.75 ℓ /min, the removal efficiencies were 97% and 98%, respectively. The order conditions of this continuous experiments are current density 2.54 A/dm² and reaction time 20 minutes. 2. The optimal conditions of the batch experiment for synthetic wastewater were current density 0.95 A/dm² and reaction time 3.0 minutes with no addition of electrolyte. With electrolyte, the optimal conditions were current density 2.54 A/dm² and reaction time 1.0 minutes. For the both experiments, the removal efficiencies were far over 97%.
다리뇌 경색의 단독증상으로 발생한 핵간 눈근육 마비 1예
박강민,배종석,김상진,김응규 인제대학교 2008 仁濟醫學 Vol.29 No.-
Internuclear ophthalmoplegia (INO) is caused by a lesion involving the medial longitudinal fasciculus (MLF) that interconnects the ocular motor nuclei. A 65-year-old woman with diabetes for twenty years developed diplopia, nausea, and vomiting one day before the presentation to the emergency room. Examination revealed adduction impairment of the right eye, combined with dissociated abducting nystagmus in the left eye. Other findings of the neuro-logical examination were normal. T2-weighted brain magnetic resonance imaging showed a hyperintensity lesion in right medial pons where the MLF locates. INO may be an isolated manifestation of pontine infarction.
崔民淳,金鍾冕,趙正坤,蔡孝錫,姜明大,宋熹鍾 全北大學校 附設 畜産開發硏究所 1987 畜産開發硏究報告 Vol.1 No.-
A total of 189 strains (Streptococcus agalactiae and non-Streptococcus agalactiae 110, Staphylococcus aureus 63, and E. coli 16) isolated from bovine mastitie milk samples by "The Connecticut Mastitis Control Program" in dairy herds were examined for drug susceptibility to 8 drugs and analysed the rate of multiple resistant patterns. 1. All of the isolates were resistant to antimicrobial agents such as penicillin (PC), streptomycin (SM), kanamycin(KM), carbenicillin (CA), lincomycin (LM), gentamicin (GM), and tetracycline (TC), singly or multiply. The isolates were more susceptible to CA (84.1%),PC (78.9%), and SM (78.4%) than the the other drugs such as GM (51.8%), KM (48.7%), TC (19.6%) and LM (19.0%) in order. 2. The multiple resistant isolates (96.3%) were more than those of singly resistant isolates (3.7%) and 58 different drug resistant patterns were observed. Among 7 singly resistant isolates, CP was the commonest. While among 182 multiple resistant isolates, CP-KM-LM-TC-GM, CP-LM-TC, CP-LM-TC-GM, PC-CP-SM-LM-TC-GM, CP-KM-LM-TC, and CP-LM patterns were frequently encounted. 3. The strains of streptococcus spp. were more susceptible to CA (90.1%) and SM (82.9%) than the other drugs such as KM (43.2%), GM (38.7%), LM (13.5%), CP (10.8%) and TC (10.8%). Among them CP-KM-LM-TC-CM pattern was frequently encounted. 4. The strains of Sta. aureus were more susceptible to PC (74.6%),CA (69.8%), SM (65.1%) and GM (63.5%) than the other drugs such as KM (46.0%), CP (22.2%), TC (15.9%) and LM (9.5%). Among them CP-LM-TC pattern was commonly encounted. 5. The strains of E. coli were more susceptible to CA (100%) and KM (75.0%) tnan TC (9.5%). But the other drugs such as PC, SM, GM, CP and LM were not. Among them PC-CP-SM-LM-TC-GM pattern was commonly encounted.