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이행남,박길문,모양우,이덕구,설재림,김건일 朝鮮大學校 機械技術硏究所 2004 機械技術硏究 Vol.7 No.2
The ejector is used to get low pressure, and it has been applied to a lot of industry field like the heat engine, the fluid instrument power plant, the food industry, environment industry etc. because there are not any problem even it is mixed with kinds of liquid, gas, and solid. The flow characteristics in diffuser are investigated by PIV and CFD. The agreement between numerical analysis and experiment shows the validity of this study and the results of this study would be useful to the engineers who design for the flow systems for heating, ventilation, air conditioning and wastewater purification plants.
이행남,박길문,이덕구,정한별,김건일,설재림 朝鮮大學校 機械技術硏究所 2005 機械技術硏究 Vol.8 No.1
The sirocco fan is used to get low noise, and it has been applied to a lot of industry field like the heat engine, the fluid instrument power plant, the food industry, environment industry etc... because there are not problems even it is mixed with a any kind of liquid, gas, and solid. The flow characteristics in sirocco fan are investigated by PIV. The experiment using PIV measurement for Test section's flow characteristics acquired velocity distribution, Condition : when sirocco fan in automobile air controller maximum 1450RPM, and a revolution is a variation (l)950RPM, (2)l100RPM, (3) 1250RPM. The agreement a experiment shows the validity of this study and the results of this study would be useful to the engineers who design for the flow systems
김도태,이행남,박길문,이덕구,설재림 朝鮮大學校 機械技術硏究所 2004 機械技術硏究 Vol.7 No.1
The diffuser is used to get low pressure, and it has been applied to a lot of industry field like the heat engine, the fluid instrument power plant, the food industry, environment industry etc... because there are not any problem even it is mixed with kinds of liquid, gas, and solid. The flow characteristics in diffuser are investigated by prv and CFD. The experiment using PIV measurement for mixing pipe's flow characteristics acquired velocity distribution, .Condition : when mixing pipe's diameter ratio is 1:2.3, and the flux is Q₁ = 1.136 l/s, Q₂ = 1.706 l/s, Q₃ = 2.276 l/s . Based on the PIV and the CFD results, the flow characteristics in ejector are discussed, and it shows the validity of this study.
동결견(凍結肩) 환자의 동서협진 치료의 임상효과 비교연구 : 견관절 가동운동범위(ROM) 변화를 중심으로
남동우,김행범,양동훈,임사비나,김건식,이두익,이재동,최도영,이윤호 경희대학교 동서의학연구소 2006 東西醫學硏究所 論文集 Vol.2006 No.-
Objectives : To establish an effective collaborate medicine treatment of acupuncture and western medicine for treating frozen shoulder patients. Methods : 59 voluntary patients were randomly assigned to Eastern treatment group(E group, n=22), Western treatment group(W group, n=17) and East-West treatment group(EW group, n=20). The E group received acupuncture treatment on LI15, TE14, GB21 and Master Dong's acupuncture points, Shin-gwan and Gyun-joong, twice a week for 4 weeks. The W group received suprascapular nerve block, subacromial injection and trigger point injection, twice a week for 4 weeks. The EW group received acupuncture and injection treatment including nerve block. All groups were instructed to practice self exercise during their daily lives. Evaluations were made before treatment and after treatment based on the change in shoulder Range of Motion(ROM) and the patient's satisfaction concerning the treatment was measured by Visual Analogue Scale(VAS). The obtained data were analyzed and compared. Results : The patient's satisfaction scores were E group 5.67, W group 7.73 and EW group 7.67. The E group and the EW group showed significant improvement in abbduction, adduction and flexion(p<0.05). The W group showed significant improvement in adduction(p<0.05). Abduction significantly improved(p<0.05) in the EW group compared to E group and W group. Flexion also showed improvement in the EW group, but the difference among the 3 groups was statistically insignificant. The three group's difference of change in extension and adduction was insignificant(p>0.05). Conclusion : Acupuncture and nerve block alone significantly improved ROM in frozen shoulder patients. Also collaborate treatment of acupuncture and nerve block significantly improved ROM in frozen shoulder patients. But the difference of the three treatments were significant only for improving abduction(p<0.05).
이대희,이동호,송인성,정현채,정운태,최규완,김우호,이준행,김정룡,윤정환,임영석,이국래,김병관,황진혁,정준오 대한소화기내시경학회 1996 Clinical Endoscopy Vol.16 No.6
The endoscopic mucosal resection(EMR) is proposed by some Japanese investigators as a curative therapy of early gastric cancer(EGC) because of its minimal invasiveness and excellent results. To evaluate the possible role of EMR as a curative treatment modality of EGC, we retrospectively analyzed l9 casea with EGC initially treated by EMR in Seoul National University Hospital from December 1993 and January 1996. 1) The histologic diagnosis prior to EMR was adenocarcinoma in 12 cases(63%) and adenomatous polyp in 7 cases(38%), which were confirmed as adenocarcinoma after EMR. 2) The histologic curative resection was done in 7 cases(37%). Two cases of them showed recurrence of the gastric cancer and were treated by radical surgery. The other five cases have been closely observed by regular endoscopic examination without recurrence for the maximal period of 1~3 months. 3) Histoiogically inadequate resection(positive cancer cell in resection margin, submucosal cancer infiltration, or no cancer tissue in resected specimen) was done in 12 cases(73%). But two surgically resected cimens of them have no residual cancer cells, and there was no cancer cells in the follow-up biopsy of the other two patients. There 4 cases were seemed to he examples of buring effect of EMR. 4) After excluding five depressed lesions greater than 1 cm is long diameter, nine lesions were curatively treated by EMR. So successful EMR rate for strictly indicated lesions wsa 64%. 5) There was no signifieant complication related to the procedure. We thnnk that endoscopic mucosal resection has a potential role as a curative treatment modality in a highly selected patient with darly gastric cancer.
이종철,김영호,이미숙,이순진,손희정,강태욱,이준행,박동일,김재준,최규완,백승운,이풍렬,임윤정,장재권 대한소화기내시경학회 2000 Clinical Endoscopy Vol.21 No.6
Background/Aims: Menetrier's disease is a poorly defined condition that is f unknown origin, characterized by giant folds in the stomach. The histoiogic fentures are foveolar hyperplasia and cystic dilatation of the gland. We presented the characteristic findings of Menetirer's disease in Korea with a review of literatures to understand the Menetirer's disease more precisely, Methods: The sixteen cases of Menetrier's disease was reported in Korea. We analyzed their age, sex, symptoms, signs, laboratory findings and treatments, retrospectively, Results: The average age was 46 years. There were 11 men and 4 women. The most common symptom was epigastric pain (94%). The most common sign were epigastric tenderness (69%) and pretibial pitting edema (63%). Patients were often associated with the hypoalbuminemia (73%). All patients showed hypertrophic folds on either gastrofiberscopy or upper gastrointestinal series, All patients showed foveolar hyperplasia histologically. Three patients were operated to control a massive upper gastrointesinal bleeding. Two patients were operated to control the intractable edema. Two patients were operated to exclude gastrie malignancy, Conclusions: Menetrier's disease showed broad clinical features such as epigastric pain, hypoalbuminemia, massive hematemesis and mimicking gastric malignancy. The giant gastric folds and foveolar hyperplasia were the most commom and important findings in the Menetrier's disease.