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이원경(Lee Won Gyeong),성덕룡(Sung Deok Yong),김만철(Kim Man Cheol),박용걸(Park Yong Gul) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
The use of the CWR track has increased consistently in the worldwide. Because the use of CWR track not only reduces the track maintenance cost, noise and vibration, but increases the life cycle of track components. Therefore, to increase train speed, improve riding condition and secure running stability, the necessity of study on making CWR is increasing. This study includes the development of a thermal buckling theory in the evaluation of curved track stability. The lateral stability of curved CWR is studied for track buckling prevention through the parameter studies. It studied the lateral buckling of the curved CWR track on the 3-D nonlinear analysis. The parameters include rail size, cant, track curvature.
육류 및 새싹채소에 오염된 Escherichia coli O157:H7의 신속검출을 위한 면역크로마토그래피법의 개발
이원경(Won-Gyeong Lee),류희정(Hee-Jeong Ryu),송정언(Jeong-Un Song),김경열(Kyeong-Yeol Kim),정도영(Do-yeong Chung),김정숙(Jeong-Sook Kim),심원보(Won-Bo Shim),정덕화(Duck-Hwa Chung) 한국식품과학회 2011 한국식품과학회지 Vol.43 No.5
E. coli O157:H7은 요독증후군, 출혈성 대장염 및 설사 등을 유발하는 원인균으로, 전세계적으로 이들의 오염에 따른 식중독 발생이 증가하고 있어, 본 연구에서는 E. coli O157:H7을 신속ㆍ정확하게 분석할 수 있는 면역크로마토그래피법을 개발하였고, 보다 신속한 검출을 위하여 육류와 새싹시료를 대상으로 최소 증균시간을 확인하였다. 먼저, 면역크로마토그래피법의 개발을 위해 colloidal gold와 EC MAb를 합성하여 EC MAb-gold conjugate를 제작한 다음, 접합여부를 확인한 결과, test line과 control line에 각각 처리되는 EC MAb와 anti-mouse IgG에 특이적으로 반응하였다. 제작된 EC MAb-gold conjugate를 이용하여 개발된 면역크로마토그래피법의 검출한계는 1×10<sup>5</sup> CFU/mL 수준까지 검출이 가능한 것으로 확인되었고, 다른 대장균속 및 주요 식중독균과의 교차반응성은 나타나지 않았다. 개발된 면역크로마토그래피법을 이용하여 임의로 E. coli O157:H7을 오염시킨 돼지고기, 소고기, 닭고기 및 새싹채소를 증균하는 동안 분석한 결과, 돼지고기와 닭고기는 6시간, 소고기는 10시간, 특히 새싹채소는 2시간 후부터 1×10 CFU/100 μL 수준까지 검출이 가능한 것으로 나타났다. 따라서 본 연구에서 개발된 면역크로마토그래피법을 이용하여 육류와 채소 등에 오염된 E. coli O157:H7을 최대 10시간 이내로 신속히 분석할 수 있을 것으로 판단된다. Escherichia coli O157:H7 has been considered as a significant food-borne pathogen since its role in causing hemorrhagic colitis and hemolytic uremic syndrome in humans was recognized. In this study, we developed an immunochromatography (ICG) assay for the detection of E. coli O157:H7. E. coli O157:H7 monoclonal antibody (EC MAb) and colloidal gold were conjugated and its specificity was determined by the ICG treated with EC MAb and anti-mouse IgG at test and control lines, respectively. The detection limit of the ICG was 1×10<sup>5</sup> CFU/mL, and no cross-reactivity was observed to other E. coli strains and major food-borne pathogens. To determine the minimum enrichment time for the ICG, meats and sprouts were inoculated with 1×10 CFU/100 μL of E. coli O157:H7. After enrichment time of 10 and 2 h for meats and sprouts, respectively, up to 1×10 CFU/100 μL of E. coli O157:H7 could be detected by ICG.
농촌지역 여성고령자의 현미덤벨체조가 체조성, 체력 및 식습관에 미치는 영향
이기철 ( Lee Gi Cheol ),정창주 ( Jeong Chang Ju ),손기수 ( Son Gi Su ),우임수 ( U Im Su ),이원경 ( Lee Won Gyeong ),공무현 ( Gong Mu Hyeon ),이수천 ( Lee Su Cheon ) 한국운동영양학회 2003 Physical Activity and Nutrition (Phys Act Nutr) Vol.7 No.2
The present study evaluated the possibility of dumbbell exercise as to improve the physical fitness and the health starus of old people in rural area. Although eighty seven volunteers of old women (over 64) living in Seonsan, Gumi city were subjected, twenty of them were attended the whole program for 6 months and the data from the twenty was analysed in this study. The results were drawn out from comparison of the body constitutuion, the physical strength, the medical aspectrs, and the questionaires of before and after this program. They showed increased physical fithess tested by grip strength (left), bar gripping reaction time, standing trunk flexibility, on foot standing test through dumbbell exercise for 6 months. Questionaire revealed the betterment of dietary pattem during this program. In the light of in these results, it is possible to conclude that dumbbell exercise had improved the basic physical condition and the health status through the increasement of physical fitness and dietary pattem change. Therefore, dumbbell exercise would be a useful program for the old people in reual area to improved their health status.
덤벨체조가 농촌지역 여성 고령자의 신체조성, 생활체력 및 인지기능에 미치는 영향
이기철 ( Ki Chul Lee ),정창주 ( Chang Joo Jeong ),손기수 ( Ki Su Son ),권은진 ( Eun Jin Kwon ),신재후 ( Jae Hoo Shin ),전수경 ( Soo Kyoung Jeon ),우임수 ( Im Soo Woo ),이원경 ( Won Gyeong Yi ) 한국운동영양학회 2004 Physical Activity and Nutrition (Phys Act Nutr) Vol.8 No.2
The present study evaluated the possibility of dumbbell exercise as to improve the health status of elderly women in rural area. Although approximatly 300 volunteers of elderly women living in rural area of Gumi city were subjected, 32 of them were attended the whole training program for 6 months. All examine were operated before training. 3 months and 6 months after starting point of training respectively. The items of measurement and their results were as the following, 1. The blood pressure slightly increased after 3 months, and blood sugar level significantly decreased after 3 months and then slightly increased. 2. The self living ability not significant changes but slightly increased, that means positive effect of dumbbell exercise on self living ability in their old age. 3. The cognitive ability, Mini-Mental State Examination (MMSE) Korean version questionnaire were used, slightly increased. 4. All items of the physical fitness except masticate strength were increased, that means positive effect of dumbbell exercise on physical activity level in elderly people. Therefore all items level was better than before dumbbell exercise, including blood sugar level, cognitive ability, physical fitness. That assumed dumbbell exercise help elderly people` both physical and mental ability.