• 동아시아식생활학회지
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• 제6권3호
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• pp.435-444
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• 1996

This study was designed to observe the degree of dietary llife, nutritional knowledge and health condition in the elementary student. The subject of this study is 5th grade students of elementary school that provided meals and not. The results of this \ulcorner요 are summarized as follows. \circled1 The dietary life of subjects is relatively regulat and they took Korean style as meals. \circled2 The nutritional knowledge of subjects was not significantly different between providing school meal and non-providing school meal. \circled3 The phsical condition of students with non providing school meal was significantly better than providing school meal. \circled4 In the mental condition of subjects they were not significant difference between providing school meal and non-providing school meal. It is necessary to develop the nutrition education program to recognize the importance of nutrition and health.

• 가정과삶의질연구
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• 제16권3호
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• pp.95-110
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• 1998

The purpose of this study was to analyze contributing factors to the perception of elderly's residential problems and satisfaction. The sample in this study consisted of 556 elderly husband and wives over 55 years old living in Seoul Daejeon Jeonju and Daegu. Statistics employed for the analysis were frequencies means one-way anova and umltiple regression analysis. The results could be summarized as follows. Deficiency of privacy was the worst status and then noise and air-pollution and the level of facilties in residential space. And the perception of residential problems could be affected by age health the type of family the number of family the ownership of house the type of house location and the economic status The significant variable positively related to the residential satisfaction were the healthy conditon of eldely ownership of house living in multihousing the perception of privacy and high level of facilities in the house.

• 대한치과기공학회지
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• 제19권1호
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• pp.37-42
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• 1997

The interfacial bond strengh and microstructural analysis of pre-heat treated porcelain-fusedmetal(PFM) were investigated using a mechanical three-point bending tester and scanning electron microscope(SEM). Four kinds of heat treated samples were prepared as follows ; A: Heating $1200^{\circ}F{\to}1600^{\circ}F$, holding 1min, reheating ${\to}1850^{\circ}F$, hold 3min under vacuum, B: heating $1200^{\circ}F{\to}1600^{\circ}F$, holding 1min, reheating${\to}1850^{\circ}F$ under vacuum conditon, C: heating $1200^{\circ}F{\to}1600^{\circ}F$, holding 1min, reheating${\to}1850^{\circ}F$, holding 3min in the air, repeat same heat treatment process under vacuum condition, D: heating $1200^{\circ}F{\to}1600^{\circ}F$, holding 1min, reheating${\to}1850^{\circ}F$, holding 1min in the air. The three-point bening test result shows that the interfacial bond strength of specimen B and C were higher than that of A and D. The SEM study indicate that Specimen C shows the highest surface density.