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永久前齒의 齒根發育段階에 따른 Electric Pulp Stimulation에 對한 齒髓反應
崔在弘 大韓小兒齒科學會 1979 大韓小兒齒科學會誌 Vol.6 No.1
The author studied the response to the stimulation of an electric pulp stimulator of healthy 854 permanent anterior teeth in 122 children aged from six to eleven years old, during different stages of tooth development. The results were as followings: 1) In completely open apices, 13.1% (18 teeth) showed positive responses, and 86.9% (120 teeth) showed negative responses. In two-thirds open apices 33.1% (75 teeth) showed positive responses, and 66.9% (152 teeth) showed negative responses. In one-third open apices 57.8% (118 teeth) showed positive responses, and 42.2% (86 teeth) showed negative responses. In closed apices 80.0% (228 teeth) showed positive responses, and 20.0% (57 teeth) showed negative responses. 2) The number of positive responses increased in each upper and lower central incisors during the stages of root development, but not in upper lateral incisors. 3) There were no significant differences statistically in responses between the teeth of the right and left sides and the upper and the lower jaw, in the same stages of root development.
최재홍,구태용,김철,이건우,오영진,류창완 商志大學校 生産技術硏究所 2002 生産技術論叢 Vol.11 No.-
The electronic money and electronic payment system is the corporation of all information technology and social infrastructures. This consists of harmony between information, security, verification, laws and organizations. It came from the unit electronic cash at the beginning, and has been evolved to the electronic payment system. At the point of view of producing money, it could carry the maximized benefit. Therefore, the competition and cooperation (between region, nation and company) occurred at the same time. We will discuss the direction of new electronic money evolution with examination of various ways.
최재홍,오재섭,김문환 KEMA학회 2019 근골격계과학기술학회 Vol.3 No.1
ABSTRACT Background Pelvic compression belt passively stabilized the sacroiliac joint via application of a compression force, thereby having a possibility to affect hip muscle strength. Purpose We investigated the effects of pelvic compression belts on the strength of hip extensor and the electromyographic (EMG) activities of latissimus dorsi and erector spinae during isometric prone hip extension with knee extension and prone hip extension with knee flexion. Study design Comparative, repeated measures design. Methods We recruited 15 patients with sacroiliac joint pain. All performed isometric prone hip extension with knee extension with and without a pelvic compression belts at a hip extension of 10°. Strength of hip extensor were measured using a load cell, and the muscle activities of the contralateral latissimus dorsi and erector spinae muscles measured using surface EMG. Results Strength of hip extensor with a pelvic compression belts increased significantly compared to without a pelvic compression belts (p<0.001) as did the EMG activity of the contralateral latissimus dorsi (p<0.05). However, the EMG activity of the contralateral erector spinae did not change significantly (p>0.05). Conclusions We recommend using of a pelvic compression belts by sacroiliac joint pain patients increased the strength of hip extensor and muscle activity of contralateral latissimus dorsi. ABSTRACT Background Pelvic compression belt passively stabilized the sacroiliac joint via application of a compression force, thereby having a possibility to affect hip muscle strength. Purpose We investigated the effects of pelvic compression belts on the strength of hip extensor and the electromyographic (EMG) activities of latissimus dorsi and erector spinae during isometric prone hip extension with knee extension and prone hip extension with knee flexion. Study design Comparative, repeated measures design. Methods We recruited 15 patients with sacroiliac joint pain. All performed isometric prone hip extension with knee extension with and without a pelvic compression belts at a hip extension of 10°. Strength of hip extensor were measured using a load cell, and the muscle activities of the contralateral latissimus dorsi and erector spinae muscles measured using surface EMG. Results Strength of hip extensor with a pelvic compression belts increased significantly compared to without a pelvic compression belts (p<0.001) as did the EMG activity of the contralateral latissimus dorsi (p<0.05). However, the EMG activity of the contralateral erector spinae did not change significantly (p>0.05). Conclusions We recommend using of a pelvic compression belts by sacroiliac joint pain patients increased the strength of hip extensor and muscle activity of contralateral latissimus dorsi.