http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Vincristine 투여가 백서 전치부 상아질 형성에 미치는 영향에 관한 주사 전자현미경적 연구
김용래,신제원,최부병 慶熙大學校 齒科大學 1989 慶熙齒大論文集 Vol.11 No.-
It is known that vincristine sulfate, the anticariogenic drug of vinca-alkaloid family, inhibits the mitosis and injuries the cellular functions. This study was to investigate the inner dentinal surfaces of apical portion in white rat incisors after vincristine sulfate injection. For this study, 30 Sprague-Dawley were used as the experimental animals, and divided into two experimental groups as follows: Control group. Six animals which intravenously recieved physiological salt solution (0.5mgJKg) one time. Experimental group. Twenty-four animals which intravenously recieved vincristine (0.5mg/Kg) one time. The experimental groups were sacrificed at 3 hours, 6 hours, 12 hours, 1 day, 4 days and 7 days after the beginning of the experiment, by means of vascular perfusion with 2.5% glutaraldehyde. The maxillary incisors including periapical tissues were removed and defatted 20% KOH solution at 60°C for 24 hours, and dehydrated with acetone. Each tooth specimen was attached on the stab for scanning electron microscopic study. Gold was coated on the each specimen in the thickness of 300A at D.C. 1400V, 6mA for 6 minutes with coating machine (Elea Ill 3). Inner dentinal surfaces of the, specimens were observed with SEM (Hitachi S-450). The results were as follows; 1. From 3 hours group after experiment, calcospherites were decreased in number comparable to control group, begun to be irregularly in shape and it's degree was severe with time. 2. In 1 day group after experiment, calcospherites were nearly disappeared and ability to form dentin of odontoblasts was probably stopped. 3. In 4 days group after experiment, calcospherites were begun to be reappeared, and thereafter gradually incressed in number. 4. In 1 weeks group of after experiment, A number of calcospherites were repaired to be close to normal group, but dentinal tubules were more or less narrowed comparable to control group, and decreased in number. 5. In each experimental group, the more a number of calcospherites were abundantly increased, the more peritubular and intertubular dentin also were fine.
김용래,유효현 弘益大學校 人文科學硏究所 2002 人文科學 Vol.10 No.-
The purpose of this examination was to find out the relationship among secondary school learners' self-efficacy, instructional motivation and school life-related coping. And in order to achieve the purpose of this examination sampled middle/high school learners in Seoul and other areas. The instruments used for the data collection were 「Self-efficacy Scale」 (Kim, A-Young, 1997), 「School Learning Motivation」 (Kim, Yong-Rae, 2000) and 「School Adjustment Scale」 (Kim, Yong-Rae, 2000). The collected data analysis were performed using SPSS/WIN(11.0V) program, and analysis Mean score(M), Standard Deviation(SD), Zero Order Correlation(r) and Multi-Regression Analysis All statistic values were tested by t-test and F-test in the significant level of p<05. And as for the major findings of this examination, 'self-efficacy', 'instructional motivation' and 'school life-related coping' were significantly positive correlation. And 'self-efficacy' and 'instructional motivation' were significantly positive influences on Korea secondary school learners' 'school life-related coping' respectively.