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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.
Molecular Epidemiology of Viral Conjunctivitis in the Southern Region of South Korea, 2012-2016
Duck Woong Park,Min Ji Kim,Kwang gon Kim,Sun Ju Cho,Hye Jung Park,Ji Hyun Shin,Yi Deun Ha,Mi Hee Seo,Jang Hoon Kim,Yeon Lee,Myoung Doo Park,Hi-Mo Yoon,Eun Sun Kim,Young Jin Hong,Hyeyoung Kee,Jae Keun 대한미생물학회 2018 Journal of Bacteriology and Virology Vol.48 No.2
The Effectiveness Evaluation of Helicopter Ambulance Transport among Neurotrauma Patients in Korea
Park, Kyoung Duck,Seo, Sook Jin,Oh, Chang Hyun,Kim, Se Hyuk,Cho, Jin Mo The Korean Neurosurgical Society 2014 Journal of Korean neurosurgical society Vol.56 No.1
Objective : Helicopter ambulance transport (HAT) is a highly resource-intensive facility that is a well-established part of the trauma transport system in many developed countries. Here, we review the benefit of HAT for neurosurgical patients in Korea. Methods : This retrospective study followed neurotrauma patients who were transferred by HAT to a single emergency trauma center over a period of 2 years. The clinical benefits of HAT were measured according to the necessity of emergency surgical intervention and the differences in the time taken to transport patients by ground ambulance transport (GAT) and HAT. Results : Ninety-nine patients were transferred to a single university hospital using HAT, of whom 32 were taken to the neurosurgery department. Of these 32 patients, 10 (31.3%) needed neurosurgical intervention, 14 (43.8%) needed non-neurosurgical intervention, 3 (9.4%) required both, and 11 (34.4%) did not require any intervention. The transfer time was faster using HAT than the estimated time needed for GAT, although for a relatively close distance (<50 km) without ground obstacles (mountain or sea) HAT did not improve transfer time. The cost comparison showed that HAT was more expensive than GAT (3,292,000 vs. 84,000 KRW, p<0.001). Conclusion : In this Korean-based study, we found that HAT has a clinical benefit for neurotrauma cases involving a transfer from a distant site or an isolated area. A more precise triage for using HAT should be considered to prevent overuse of this expensive transport method.
박치모(CHI-MO PARK),장대오(DAE-OH JANG),한삼덕(SAM-DUCK HAN) 한국해양공학회 2007 韓國海洋工學會誌 Vol.21 No.5
Ship structures are subject to severe environmental loads causing appreciable hull girder deflection which in tum affects the piping system attached to the main hull in the form of displacement load. While this load may cause failure in the pipes, loops have been widely adopted as a measure of preventing this failure with the idea that they may lower the stress level in a pipe by absorbing some portion of the displacement load. But as the loops also have some negative effects such as causing extra manufacture cost, deteriorating the function of the pipe and occupying extra space, the number and the dimensions of the loops adopted need to be minimized. This research develops a design formula for pipe loops. The accuracy of the proposed design formula was verified by comparing two results respectively obtained by the proposed formula and MSC/NASTRAN. The paper ends with the sample example showing the efficiency of the proposed formula.
1회성 키네시오 밸런스 테이핑이 퇴행성 무릎관절염환자의 통증, ROM 그리고 근파워에 미치는 영향
조창모(Chang Mo Cho),이성노(Seong No Lee),박기덕(Gi Duck Park),김사엽(Sa Yup Kim),윤성덕(Sung Duk Yoon) 한국발육발달학회 2011 한국발육발달학회지 Vol.19 No.1
The purpose of this study was to provide basic Information of taping treatment for knee tendinitis. For that purpose, Kinesio taping was conducted with elderly female patients, over 65 of age, suffering from degenerative osteoarthritis to examine the effect of Kinesio taping on pains, ROM and muscle powers of the patients. For the experiment, 19 patients volunteered and 9 patients were put into the experimental group and the rest 10 were put into control group, and the former were given 1 session of Kinesio taping treatment, and difference of pain, ROM, knee muscle power before and after the treatment was measured. The data were analyzed with SPSS using 2-way repeated ANOVA. Paired simple t-test and Independent t-test were used when revealed a significant interaction. In terms of pain, the experimental group showed significant reduction after the treatment. In terms of ROM, the experimental group showed significant increase in their left knees after the treatment and both group showed significant increase in their right knees after the treatment. In terms of muscle strength, the experimental group showed significant increase in their right/left flexion and extension after treatment compared to the control group. These results suggest that one-time Kinesio balancing taping is effective for pain relief of degenerative osteoarthritis patients and can improve their ROM and muscle strength.