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고양이 흉수에서 Substance P 면역반응 신경원의 분포와 연접연구
이승균(Sung Kyun Lee),박수석(Soo Seog Park) 대한통증학회 1996 The Korean Journal of Pain Vol.9 No.2
N/A Background: Though a nurnber of studies have described the distribution of substance P (SP)-like immunoreactivity in the spinal cord, they have been focused on lamina I and II of the dorsal horn and there are little morphological studies on the topographic distribu- tion and ultrastructure of the SP immunoreactive neurons especially in the ventral horn of the spinal cord. This study was conducted to identify distribution pattern of SP immunoreactive neurons and to difine the synaptic organization of their processes in ven- tral horn of the thoracic cord of the cat by preembbeding immunocytochemical method using SP antiserum. Methods: Five adults cats of either sex were used and deeply anesthetized by intramus- cular injection of ketamine. After removal of the spinal cord, samples of thoracic cord were taken and placed in fresh fixative at 4 ℃ for 2 hours. Transverse sections 50pm thick were processed using the preembbeding immunocytochemical method and incubated consecutively in the specific primary antibody and the 10% normal goat serum, the rabbit anti-substance P antiserum, the biotin-labelled goat anti-rabbit IgG and finally the avidin- biotin-peroxidase complex. The processed tissue sections were throughly washed and stained in the black with 1% uranyl acetate. Section were examined on a electron micro-scope. Results: l) SP immunoreactive neurons were observed in the gray matter around central canal. 2) In lamina I and II SP immunoreactivity was observed in both myelinated and unmy- elinated nerve fibers, but in ventral horn only in the unmyelinated nerve fibers. 3) SP immunoreactive axon terminals with small round and large dense core vesicles made chemical synapses onto the dendrites of motor neurons in the ventral horn. Conclusion: SP immunoreactive neurons might play an important role in modulation of motor neurons in the ventral horn of the thoracic cord of the cat.
지역거주 및 시설입소 노인 여성의 이동능력 관련 체력 비교
이승균(Seung-Kyun Lee),성순창(Soon-Chang Sung),김현수(Hyun-Soo Kim) 한국생활환경학회 2012 한국생활환경학회지 Vol.19 No.6
Age-related loss of strength contributes to impaired mobility and increases the risk of fall. The purpose of this study was to compare the mobility-related fitness (MF) of elderly women among wellbeing community center, Kyungro-dang (senior community center), and nursing home. The number of subjects were 513 (n = 145 wellbeing community center, n = 217 Kyungro-dang, and n = 151 nursing home). The performance test items related to MF were composed by the grip strength, chair sit-to-stand, and 244 cm up and go test. Patients suffering severe musculoskeletal and cardiopulmonary disease were excluded from this study. The grip strength, chair sit-to-stand, and 244cm up and go measures were decreased significantly across the three groups (p < .01). The result suggest that effective interventions for enhancing mobility should be developed for the Kyoungro-dang and nursing home elderly women. Further investigation is needed involving larger sample sizes and direct comparisons with other forms of mobility-related fitness.
[I.T.S.부문] 주행 부하 추정기법을 이용한 정지/서행 주행 제어 시스템
이승균(Seungkyun Lee),이경수(Kyoungsu Yi) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_1
This papers describes a vehicle control law with driving load adaptation for application to a stop and go cruise control. Gravitation force due to road slope is a large unknown disturbance in vehicle dynamic model. Throttle switching line is tuned to flat land. It is not proper to slop land. Throttle, brake switching line has been adapted using a driving load estimation method. Driving Load is estimated from engine speed, turbine speed, brake pressure and vehicle acceleration using simplified vehicle dynamic model and a least square method. The performance of the control law is investigated via simulation and experiment test. The simulation and experiment test show that the proposed control law can reduce distance error and speed error.
저항운동 방법에 따른 환기량, 에너지소비량 그리고 산소섭취량의 비교
이용수(Lee Young-Soo),이승균(Lee Seung-Kyun),이상호(Lee Sang-Ho) 한국체육과학회 2002 한국체육과학회지 Vol.11 No.1
The purpose of this study was to compare ventilation, energy consumption and oxygen consumption of three resistance exercise methods(1RM-60%, gradual increase and gradual decrease) using flat bench press and to serve resistance exercise program. The subjects were 7 men who were experienced resistance exercise and college students. A repeated measure one-way ANOV A were used to evaluate test results. The results were following like this : 1. Ventilations during resistance exercise according to 3 ways(1RM 60%, gradual increase and - decrease) were not significant meaning of statistic. However, value according to gradual decrease way was high than others. It has a significant difference of .05. 2. Energy consumptions during resistance exercise according to 3 ways(1RM 60%, gradual increase and - decrease) were not significant meaning of statistic. However, value according to gradual decrease way was high than others. 3. Oxygen consumptions during resistance exercise according to 3 ways(1RM 60%, gradual increase and - decrease) were not significant meaning of statistic. However, value according to gradual decrease way was high than others.