http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
자연과학편 : 주관절각도와 수축강도에 따른 주관절 굴곡의 운동생리역학적 분석
이만기(M.K.Lee),이기태(K.T.Lee),장성록(S.R.Chang) 한국체육학회 1994 한국체육학회지 Vol.33 No.1
Muscular strength is assessed by measuring the force exerted on an external object by muscle group. Since there are four flexor muscles at elbow, elbow flexion depends on muscle`s coactivation. The objective of this study is to investigate the changes of the role assigned to each muscle for three elbow angles and four exertion level.It should be noted that an EMG multiplexor is developed and bioelectric signals of four elbow flexors have been simultaneously measured. The results showed that the recruitment of biceps brachii is relatively constant but those of other muscles are varied depending on elbow angles and exertion levels.
함영복(Y. B. Ham),박인섭(I. S. Park),박중호(J. H. Park),윤소남(S. N. Youn),신경철(K. C. Shin),이기태(G. T. Lee) 유공압건설기계학회 2013 유공압건설기계학회 학술대회논문집 Vol.2013 No.10
This study proposes a new mechanism for needle-free drug injection into the skin of agricultural animals that can be simple, lightweight and high response characteristic, for the delivery of proteins or vaccines. Jet injectors, which deliver drugs into the skin using compressed springs or compressed gas, provide a needle-free method of conventional transdermal drug delivery. However, the compressed spring or gas type injector has the drawbacks of high weightand impact noise. On the other hand, the high pressure injection device using a high pressure pump and an on-off valve has the advantage that it is smaller than the noise of spring or gas injectors. For this reason, we propose a mechanism that consists of a high pressure pump, an accumulator, an on-off valve and an injection nozzle. We tested a commercial injector- a compressed gas injector - and the impact gun type injector - a compressed spring injector - and used them to verify new specifications. The accuracy of injection was measured with an electronic weight balancer. Finally, the proposed mechanism was evaluated their suitability for needle-free drug injection based on results of the analysis and comparison of all the injectors.