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兪炳世 우석대학교 의과대학 1971 우석의대잡지 Vol.8 No.1
To investigate the pattern of the cell renewal of the liver after birth by means of autoradiography, 68 mice, both male and female, were divided into 6 groups according to the age. The mice were treated with a single dose of H³-thymidine, 0.8 micrecuric per gram of body weight, intraperitoneally. The parenchymal cells, sinusoid littoral cells, Glisson's capsule and interlobular connective tissue were examined microscopically and the labeling indices were calculated. 1. The highest R. I.(13.6) was seen in the 4-day group. Gradual decrease in R. I. was observed in the 1-week group and then in the 2-week group. In the 3-week group, however, sudden decrease in labeling was noted and this was even lower figure than those of matured(R. I. 2.5) and old (R. I. 5.0) groups. 2. In all the cell elements, after maturation, sex difference was marked and always the female group showed a higher index. 3. In the female adult group, the influence of ovarian cycle was clearcut and except a few occasions, the labeling counts were almost always high during diestrus period. 4. The most sensitive cells, as far as the aging effect on the cell renewal system of the liver is concerned, seemed to be the parenchymal cells, whereas, sinusoidal and connective tissue cells seemed least sensitive and did not show much difference in R. I. throughout young and old ages.
유병인(Yoo Byung-In),서병세(Seo Byung-Se) 한국체육과학회 2002 한국체육과학회지 Vol.11 No.1
Sports activities have been considered as consumptive behaviors. Research in sports participation has mainly conducted through descriptive statistical analyses. However, It is our contention that those phenomenon need to be analyzed by multi-dimensional perspectives instead of a simple description. It is important to examine consumers' investment and consumption which can be contributed to the nation's policy and financial development. This can be further pursued through panels in the national level. Identifying resources and the present status of physical education and sports may be able to facilitate planning and developing policies which can help effective management of resources. Interdisciplinary approaches with related academic disciplines such as economics would be beneficial in consolidating sports and physical education by adopting economic theories and analyses of econometrics. Ultimately, these efforts may contribute to the active sports participation of the public, resulting in increased quality of life. Future research should be directed toward determining socio-economic variables in explaining individuals' sports activities and in formulating bases in research.