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운동형태의 차이가 Alloxan유발 당뇨쥐의 혈당 및 인슐린 농도에 미치는 영향
윤진환,정일규,김종오,이희혁,지용석,오봉석,채정룡 대한스포츠의학회 2003 대한스포츠의학회지 Vol.21 No.1
The Purpose of this study was to investigate the effect of exercise intensity on blood glucose and insulin levels in diabetic rats with alloxan. Twenty sprague-dawley male rats were assigned to power training groups(n=10) and endurance training groups(n=10). Diabetes was induced by single injection of alloxan(50 mg/kg B.W) Blood glucose and insulin were determined every week for 4-weeks. The conclusion of this study follows as below: 1) There was significantly different on blood glucose levels in two groups. 2) There was significantly different on insulin levels in two groups These results suggest that proper exercise intensity in diabetic rats can significantly decrease blood glucose and insulin level and make good glycemic control. In conclusion, it has been found that regular prolonged endurance training with diabetic rats, improves insulin and blood glucose.
호기성 SBR공정에 의한 비이온성 계면활성제 NPEO 의 제거
범진영,이석헌 대한상하수도학회 2002 상하수도학회지 Vol.16 No.5
Removal of non-ionic surfactant, nonylphenol ethoxylate (NPEO), by aerobic sequencing batch reactor was investigated using lab scale experimental apparatus. Bio-degradation of NPEO resulted in ethoxylate chain shortening and nonylphenol (NP) production. About 5mg/L of NPEO was introduced and only < 0.09mg/L of NPEO and NP was detected in treated effluent. During the aeration, NPEO and NP in mixed liquor were also reduced. Most of NP and short-chained NPEO were detected in solid phase. Anaerobic condition provided during settling of sludge and decanting of treated effluent caused increase of NP in sludge.
이석열,이숭진,박형주,이철세,이길노,김윤정,나주옥 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2
A 33-year-old female was admitted to our hospital due to removal of lung mass which indicentally detected Chest radiography. Chest computerized tomography revealed lung parenchymal cystic lesion. Open thoracotomy was done for diagnosis and therapy. Cystic lesion was communicated to bronchus and wedge resection including cystic lesion was done. Bronchogenic cyst is congenital disease and mainly locate in mediastinum. It is rare in lung parenchyme. Herein we report a case of intrapulmonary bronchogenic cyst.
Supine Bicycle Ergometer 운동이 뇌파와 기분상태에 미치는 영향
윤진환,정일규,김영표,김종오,이희혁,오봉석,김창주 대한스포츠의학회 2003 대한스포츠의학회지 Vol.21 No.1
In this study we investigated the effects of supine ergometer exercise on physiological and psychological relaxation. Seven healthy young men(aged 24.4±2.00years) volunteered for the experiment. The experiment consisted of the following three successive segments" A pre-exercise period of 10 min, during which the subjects rested in a supine posture with their eyes closed for the final 5 min; an supine ergometer exercise period of approximately 10 min, during which the subjects performed intensity of 50%HRmax exercises; A post-exercise recovery of 5 min, and a recovery of 10 min, which was similar to the pre-exercise rest period. The electroencephalo-graphic(EEG) activity of the central cortex of the brain were measured pre-exercise, post-exercise 5 min, and recovery phase 10min. Fast Fourier Transformation of the EEG was used to obtain power spectrum areas in the delta(0.5~4 Hz), theta(4~8 Hz), alpha(8~13 Hz) and beta(13~30 Hz) frequencies. We compared the relative power values(power %) of the electroencephalogram alpha bands(8~13 Hz) and korean edition of the profile of mood states(K-POMS) before and after the supine ergometer exercise. We also estimated the percentage of maximal heart rate(%HRmax) throughout the experiment to ascertain the intensity of the supine bicycle ergometer exercise. The results of %HRmax indicated that the intensity of supine exercises practised in the experiments ranged from low to moderate. The power % of EEG alpha bands had increased significantly after the supine ergometer exercise compared with the pre-exercise rest(p<0.05). From the POMS results, we observed that positive mood(vigour) increased and negative mood(tension, depression, and total mood)decreased significantly after the supine ergometer exercise(p<0.05). This study found that the subjects showed increased physiological and psychological indices of relaxation after supine bicycle ergometer exercise.
이승진,이석열,박형주,이철세 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2
Rupture of the main bronchus followed by blunt chest trauma is relatively rare but, with increasing traffic accidents, the incidence has been increasing recently. Early diagnosis and management for the traumatic bronchial rupture is essential to reduce morbidity, mortality and late complication but often, it is comcealed in cases of blunt chest trauma and particularly it is associated with multiple other organ injuires. Especially, bronchial pseudoaneurysm which maintains airway patency after complete transection of the bronchus by blunt chest trauma is very unusual case. We report a case of a 15 year old male who had complete bronchial transection with bronchial pseudoaneurysm.The bronchial rupture was comfirmed by spiral chest CT and 3D reconstruction. In the operation, right main bronchus was completely transected and separated but the airway was patent to the right lung by pseudoaneurysm of the bronchus. Resection of the pseudoaneurysm and end to end anastomosis of the bronchus was performed successfully.
김석현,이진우 江原大學校 産業技術硏究所 2002 産業技術硏究 Vol.22 No.A
Acoustic modes of a vehicle compartment dominate the noise characteristics of the vehicle system in the low frequency range. Vehicle compartments have head liner and air gap of proper thickness to mount a interior lamp, as well as to have a good sound insulation and absorption performance. This study estimates the acoustic modal property of the medium size passenger car by experiment and by finite element analysis and also, investigates the effect of the head liner on the acoustic mode of the passenger compartment to obtain useful information for low noise compartment design.
Common Logistics Center adoption in Korea's small and medium companies
Seock-Jin Hong,Kwang-Seog Kim,Choon-Woo Leem 인하대학교 정석물류통상연구원 2010 JOURNAL OF INTERNATIONAL LOGISTICS AND TRADE Vol.8 No.1
This article reports on the current state of Common Logistics Center(CLC)adoption in Korea’s industrial complex, identifies the benefits of and barriers of adopting Common Logistics Centers, and provides recommendations for the adoption/expansion of Common Logistics Centers. The author surveyed a cross-sectional of 175 firms in the industry, followed by interviews in an industrial complex in Incheon, Korea. THe author founded the benefits and barriers of Common Logistics Centers and the major factors that encourage companies’ participation.