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양현관,임형원 대한물리치료학회 2019 대한물리치료학회지 Vol.31 No.2
Purpose: This study examined the effects of trunk control rehabilitation robot training (TCRRT) on the dynamic balance, lower extremity strength, gait ability and pain for bipolar hemiarthroplasty. Methods: Hemiarthroplasty (n=28) patients participated in this study. The subjects were randomized into two groups: trunk control rehabilitation robot training group and control group. Results: The TCRRT group showed significantly more improvement in the MFRT, MMT, 10MWT, TUG, and VAS compared to that before intervention (p<0.05). In addition, all tests were significantly greater in the experimental group than in the control group. Conclusion: These results suggest that TCRRT is feasible and effective for improving the dynamic balance, lower extremity strength, gait ability, and pain efficacy after bipolar hemiarthroplasty.
π-중심을 가진 유기 색소 분자의 비선형 흡수 과정 연구
최혜영,차명식,양현관,이광섭,이광희 한국물리학회 2004 새물리 Vol.48 No.1
We investigated nonlinear absorption processes in organic chromophores with thiophene and uorene À-centers. Laser pulses with durations of 7 ns and 35 ps were used to measure and compare the nonlinear absorption processes. Based on a ve level model for the molecules, we observed a much larger nonlinear absorption for the 7 ns pulse, which could be interpreted as being due to a two-photon absorption followed by an excited state absorption, We verifed that the strength of the nonlinear absorption increased not only with the two-photon absorption coecient but also with the lifetime of the excited state.