• 제목/요약/키워드: (TKD)

검색결과 6건 처리시간 0.018초

태권도 수련이 초등학생 하지근력에 미치는 영향 (The Effects of Taekwondo Traing Causing Leg-muscular Strength for Elementary School Children)

  • 윤영조;정재민;김태호;배성수
    • 대한물리의학회지
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    • 제4권3호
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    • pp.175-182
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    • 2009
  • Purpose:The purpose of this study is to investigate the effects of Taekwondo training causing leg-muscular strength for elementary school children. Methods:The subjects were Taekwondo group (n=20) and non-Taekwondo group (n=20) from 5-6 graders of elementary school. The Tkd group exercised Taekwondo and the non-Taekwondo group exercised free gymnastics. The subjects were measured 3 times(pre, mid and after)during the 8weeks program. The leg muscular strength peak torque and average power were measured. And the extension-flection of angular speed 60 deg/sec and 180 deg/sec was measured. Results:The results of this study can be summarized as follows: 1. Compared with the Tkd group, the non-Tkd group showed no significant difference in tests statistically in case of right-left of pre-4weeks. The leg muscle's peak torque did not show significant difference in the extension angular 60 deg/sec(p>.05). 2. The score of flection angular speed 60deg/sec was not different in tests leg strength of right-left to pre-4weeks(p<.05), but the muscle was increased according to the amount of time spent in case of the 4-8weeks. 3. Compared with the Tkd group, the non-Tkd group showed no significant difference in tests statistically in case of right-left of pre-4weeks. The leg muscle's peak torque did not show significant difference in the extension angular 180deg/sec(p>.05). The right leg muscular strength was increased in case of the 4-8weeks. The left leg showed no difference. 4. Leg muscular strength was increased in the case of the pre-4weeks in the right of flection angular speed 180deg/sec. The left did not show difference. The right leg muscle in case of the 4-8weeks showed no difference. The left showed significant difference. Conclusion:Taekwondo training is effective for leg-muscular strengthing for elementary school children.

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몬테 카를로 기법을 이용한 결정립계 기포의 자유 공간으로의 연결 모사 (Simulation of Interlinkage of Grain Boundary Gas Bubbles to Free Surfaces by the Monte Carlo Technique)

  • Koo, Yang-Hyun;Park, Heui-Joo;Sohn, Dong-Seong;Yoon, Young-Ku
    • Nuclear Engineering and Technology
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    • 제26권3호
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    • pp.374-380
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    • 1994
  • 결정립계에 존재하는 핵분열기체의 기포가 소결체의 외부와 연결되는 정도를 모사할 수 있는 방법을 개발하였다. $UO_2$ 결정립의 형상을 TKD로 취급할 때, 결정립 Corner에서 자유 공간과 연결되는 핵분열 기체의 기포 비율을 결정립 Corner에 형성된 기포 반경의 함수로서 몬테 카를로 방법을 이용하여 계산하였다. 2차원적인 분석에도 불구하고, 본 방법은 모든 기포가 자유 공간과 완전히 연결된 순간에서 예측된 핵연료 팽윤과 측정된 핵연료 팽윤이 비교적 잘 일치함을 보였다. 그러나 핵분열기체 기포가 외부와 상호 연결된 정도를 좀 더 사실적으로 모사하려면 결정립 Corner의 기포를 3차원적으로 취급해야 한다.

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전자현미경을 이용한 마이크로에서 나노크기 구조의 결정방위 및 상분석 (Studies on orientation and phase analyses of macro to nano structure using EM)

  • 원종한;윤형중;송찬근
    • 한국표면공학회:학술대회논문집
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    • 한국표면공학회 2015년도 추계학술대회 논문집
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    • pp.146-146
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    • 2015
  • 한국기초과학지원연구원(KBSI)에 설치되어 있는 SEM-EBSD 및 TKD와 NanoMEGAS 사의 TEM-ASTAR를 이용하여 마이크로미터에서 나노미터까지의 결정립방위와 상분석에 대한 연구를 수행하고 분석함으로써 제조공정에서의 오류 및 최적화된 공정조건을 제공한다.

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Molecular Involvement and Prognostic Importance of Fms-like Tyrosine Kinase 3 in Acute Myeloid Leukemia

  • Shahab, Sadaf;Shamsi, Tahir S.;Ahmed, Nuzhat
    • Asian Pacific Journal of Cancer Prevention
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    • 제13권9호
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    • pp.4215-4220
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    • 2012
  • AML (Acute myeloid leukemia) is a form of blood cancer where growth of myeloid cells occurs in the bone marrow. The prognosis is poor in general for many reasons. One is the presence of leukaemia-specific recognition markers such as FLT3 (fms-like tyrosine kinase 3). Another name of FLT3 is stem cell tyrosine kinase-1 (STK1), which is known to take part in proliferation, differentiation and apoptosis of hematopoietic cells, usually being present on haemopoietic progenitor cells in the bone marrow. FLT3 act as an independent prognostic factor for AML. Although a vast literature is available about the association of FLT3 with AML there still is a need of a brief up to date overview which draw a clear picture about this association and their effect on overall survival.