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트레드밀 운동이 척수손상 백서의 운동기능 회복에 미치는 효과
천진성,김태열,남기원,김용억,오명화,김경윤,김은정,이재춘,장미경,최현석,허명,김계엽,Chun, Jin-Sung,Kim, Tae-Youl,Nam, Ki-Won,Kim, Young-Eok,Oh, Myung-Hwa,Kim, Kyoung-Yoon,Kim, Eun-Jung,Lee, Jae-Choon,Jang, Mee-Kyung,Choi, Hyun-Seok,Heo, 대한물리치료학회 2007 대한물리치료학회지 Vol.19 No.4
Purpose: This study was designed to investigate the effects of treadmill exercise on functional recovery after rat with experimental SCI. Methods: SCI was induced by the NYU-spinal cord impactor(NYU, USA) dropped a weight of 10 gm after laminectomy. Experimental groups were divided into the Group I (normal), Group II (control) and Group III(treadmill exercise). After 2 days of the operation, 24 rats(group II, III) were trained to walk on treadmill for 21 days twice/day, 15 min/session. After operation, rats were tested at modified Tarlov scale at 1, 2, 3, 4 days with divided into 2 groups, and Motor behavior test(BBB locomotor rating scale, Grid walking test, Narrow beam crossing test, Modified inclined plane test) was examined at 1, 3, 7, 14 and 21 days. Histopathological study were performed at 1. 3, 7, 14 and 21 days by H&E, Luxol Fast Blue staining were same times. Results: After SCI an improvement of motor behavior was shown group II, III. The motor behavior test of group Ill showed considerable improvement until 14 days. Conclusion: These results suggest that treadmill exercise treatment can playa role in facilitating recovery of locomotion following spinal cord injury.
당뇨병증 골절렛트의 골치유 과정에서 맥동성 초음파가 미치는 영향
민순규,천진성,용준환,유영대,Min, Soon-Gyu,Chun, Jin-Sung,Yong, Jun-Hwan,Yoo, Young-Dae 대한물리치료학회 2006 대한물리치료학회지 Vol.18 No.2
Purpose: The study to pulsed ultrasound effects of diabetes mellitus fracture model in rat. Methods: We used 36 Sprague-Dawely rats which were divided into 3 groups; the animals were divided into group of 4 rats each 4th, 14th and 28th days. All animal was induced diabetes mellitus model to used streptozotocin with 45 mg/kg. Pulsed wave were divided into $50\;mW/cm^2$ and $100\;mW/cm^2$. Results: T-ALP value was significantly change from group II, III on 14th, 28th days (p<0.05). Especially T-ALP value to between groups was significantly change from group II on 14th days (p<0.05). Osteocalcin value was significantly change from group II on 28th days(p<0.05). At fracture site, osteoblast, osteoclast expression was observed from 4th days after treatment and it reached its maximum intensity at 28th days. At fracture site, $TGF-{\beta}_1$ expression was observed from 4th days after treatment and it reached maximum intensity at 14th days. Conclusion: According to this study, diabetes mellitus fracture model to the more effective is divided into $50m\;W/cm^2$ pulsed ultrasound.
Development of CFRP Tubes for the Light-Weight Propeller Shaft of 4WD SUV Vehicles
Hae-Jung Na(나혜중),Jin-Sung Chun(천진성),Kyu-Sang Cho(조규상) 한국기계가공학회 2018 한국기계가공학회지 Vol.17 No.4
In this study, the one-piece propeller shaft composed of carbon/epoxy was designed and manufactured for 4 wheel drive automobiles that can bear the target torsional torque performance of 3.5kN.m. For the CFRP tube, braiding machine was used to weaving carbon fiber and it was formed the braided yarns with the braid angle ± 45° and axial yarns to improve strength of the lengthwise direction. The final CFRP tube of propeller shaft was evaluated through the torsional torque test. The CFRP propeller shaft satisfied requirement of the target torsional maximum torque of 3.5kN.m. Also, it was found that the one-piece composite propeller shaft with CFRP tube had 30% weight saving effect compared with a two-piece steel propeller shaft.