• Archives of Pharmacal Research
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• v.8 no.1
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• pp.31-38
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• 1985

Polysaccharide fractions were prepared from Forsythia Corea by several different extraction schedules. The fractions obtained were designated as ForCo A, ForCo B and ForCo C respectively. ForCo C was further purified through Sephadex G 200 column chromatography and obtianed two subfractions (Coreana A, Coreana B). ForCo showed marked antitumor activity against sarooma 180 and its activity was dose-dependent. Coreana A, purified from ForCo C, showed somewhat higher antitumor activity. ForCo C increased the number of circulating leucocytes and peritoneal exudate cells, but didn't show any significant effects on the phagocytic activity and total serum protein level. Chemical analysis showed that ForCo C was composed of glucose, galactose, xylose and arabinose. A close relationship between antitumor activities and polysaccharide contents waw observed. These results indicate strongly that antitumor active principle of Forsythia Corea is polysaccharide.

• International journal of advanced smart convergence
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• v.12 no.3
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• pp.192-199
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• 2023

The purpose of this study was to investigate the structural relationship between eating habits, physical activity, and subjective health perception, which can affect the mental health status of adolescents, and to examine whether subjective health perception has a mediating effect in these relationships. In this study, raw data from the "17th 2021 Youth Health Behavior Online Survey" were used, and a total of 1,998 people were used for the analysis of Gangwon-do adolescents, except for data with missing values. For analysis, SPSS 25.0 and AMOS 25.0 programs were used to analyze descriptive statistics, t-test, and structural equation models(SEM). Physical activity was found to have a positive and significant effect on mental health status, and subjective health cognition showed the effect of physical activity mediating mental health status.

• School Mathematics
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• v.16 no.3
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• pp.613-631
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• 2014

The aim of this study was to investigate how the small group activity system influences individual to form concepts of prime number and composite number through activity theory on learning process of mathematically gifted 5th-grade students. Student's worksheets, recorded video, and interview were gathered and transcribed for analyzing data. Process of concept formation and using symbol behavior were used to derive the stage of mathematical concept from students, and the activity system and stage of concept formation process were schematized through analysis of whole class activity system and small group activity system based on activity theory. According to the results of this study, two students who were in different activity groups separated into the state of semi-concept and the stage of complex thinking respectively, and therefore, social context and the activity system had effects on process of concept formation among the students.

• Journal of Korean Academy of Nursing
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• v.41 no.4
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• pp.500-509
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• 2011

Purpose: Time-driven activity-based costing was applied to analyze the nursing activity cost and efficiency of a medical unit. Methods: Data were collected at a medical unit of a general hospital. Nursing activities were measured using a nursing activities inventory and classified as 6 domains using Easley-Storfjell Instrument. Descriptive statistics were used to identify general characteristics of the unit, nursing activities and activity time, and stochastic frontier model was adopted to estimate true activity time. Results: The average efficiency of the medical unit using theoretical resource capacity was 77%, however the efficiency using practical resource capacity was 96%. According to these results, the portion of non-added value time was estimated 23% and 4% each. The sums of total nursing activity costs were estimated 109,860,977 won in traditional activity-based costing and 84,427,126 won in time-driven activity-based costing. The difference in the two cost calculating methods was 25,433,851 won. Conclusion: These results indicate that the time-driven activity-based costing provides useful and more realistic information about the efficiency of unit operation compared to traditional activity-based costing. So time-driven activity-based costing is recommended as a performance evaluation framework for nursing departments based on cost management.

• English Language & Literature Teaching
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• v.11 no.3
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• pp.139-164
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• 2005

The purpose of this study is to analyze the writing activity materials presented in the thirteen middle school textbooks and determine if the writing activity materials are appropriate for the goals and contents of the 7th national curriculum. The writing activity materials are analyzed based on three criteria. First, the writing activity materials are analyzed based on Rivers'(1981) five writing guidances, which are specified with detailed writing activity materials. The first criterion was suggested by Young-Ran Lee(2004). Second, the writing activity materials in the textbooks are analyzed according to the criterion prescribed by the 7th national curriculum, which are specified with writing activities presented by Rivers(1981), Raimes(1983), Hedge(1988), and Beverly and Carol(1988). Third, the writing activity materials related to other skills, such as listening, speaking, and reading, in the textbooks are selected and analyzed according to the proportion of the integration of skills. The results are as follows: First, writing activity materials in the textbooks belong to the type of 'reproduction', ie. the second stage of Rivers' writing guidance, 'recombination, which is the third stage of Rivers' writing guidance, and the type of 'guided writing', noted on the fourth stage of the guidance. Second, the writing activity materials satisfy the criterion in the 7th national curriculum, as for the proportions, but they are not balanced. Third, most of the writing activity materials contain writing activities that involve non-writing skills such as listening, speaking and reading, but they are not balanced. Particularly, writing activity materials related to reading activities are common.

• Korean Journal of Human Ecology
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• v.18 no.4
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• pp.971-984
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• 2009

The purpose of this study was to analyse the relations among the residents' characteristics, the policy of the facility, and the physical characteristics of activity areas, and to understand the elements for the lively use of activity areas in the elderly nursing facilities. The results of the study are as follows: First, there was a relationship between the characteristics of semi-public activity areas and the residents' management-control policy. The facilities having semi-public areas of living room type showed more flexibility in time and place and more respects for the residents. Second, the activity areas of connection type were much more used than the compartment type, especially in the facilities having more residents incapable of walking. On the other hand, the facilities having high control for the residents showed high using rate in public activity areas, and all those did not have semi-public areas or showed low using rate in there. Third, in the analysis of the relationship between the physical characteristics and the using rate of activity areas, the public activity areas having compartment type in the spatial composition and hall as a form were likely to have multiple usages. On the whole, the various form of activity areas, the area per residents, openness, accessibility and centrality were having interactions each other for high using rate in activity areas. Especially, many stimulations and the furniture arrangements that were good for the residents' interactions had a function of compensation for the poor physical characteristics of activity areas. This study investigated only the using rates to understand the lively use of the space. For the future study, it is suggested that the detail using behavior of the residents should be examined to understand the influential elements.

• Nutrition Research and Practice
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• v.5 no.4
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• pp.281-287
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• 2011

In this study, we evaluated the antioxidant activity of pine needle extracts prepared with hot water, ethanol, hexane, hot water-hexane (HWH), and hot water-ethanol (HWE), using the DPPH (1,1-diphenyl-2-picrylhydrazyl) radical method. The hot water extract possessed superior antioxidant activity than the other extracts. We also compared the antioxidant activity of pine needle extracts through ROS inhibition activity in a cellular system using MC3T3 E-1 cells. The hot water extract exhibited the lowest ROS production. The pattern of HPLC analysis of each extract indicated that the hot water extract contained the highest proanthocyanidin level. The pine needle hot-water extract was then isolated and fractionated with Sephadex LH-20 column chromatography to determine the major contributor to its antioxidant activity. The No.7 and 12 fractions had high antioxidant activities, that is, the highest contents of proanthocyanidins and catechins, respectively. These results indicate that the antioxidant activity of procyanidins from the hot water extract of pine needles is positively related to not only polymeric proanthocyanidins but also to monomeric catechins. Moreover, the antioxidant activity of the pine needle hot water extract was similar to well-known antioxidants, such as vitamin C. This suggests that pine needle proanthocyanidins and catechins might be of interest for use as alternative antioxidants.

• School Mathematics
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• v.13 no.2
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• pp.287-305
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• 2011

The goal of this study is to investigate reform directions of mathematics activity book which was introduced according to 2007 revised curriculum through literature analysis of introducing process. Futhermore, this study is to suggest the meaningful developing direction of new activity book according to the mathematics curriculum which is being developed now. To do this, first, the background of introducing activity book, developing direction, construction systems and the way to use it was analyzed. Second, teachers' response to the activity book on the basis of literature analysis was researched. Third, measures to improve activity book were investigated. In conclusion, reform direction of mathematics activity book was proposed in terms of developing research, goal, way to go, construction systems and questions arrangement.

• Journal of dental hygiene science
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• v.5 no.4
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• pp.185-189
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• 2005

This research is about influence on academic motivation and satisfaction of college life by Dong-A-Ry activity in students on department of dental hygiene. The results of the study were as follows: 1. The relationship between academic motivation and Dong-A-Ry activity was found to a positive relationship with ${\alpha}$ <0.05 in analysis of variance, which shows that correlation between variables are significantly high. 2. The relationship between satisfaction of college life and Dong-A-Ry activity was found to a positive relationship with ${\alpha}$ < 0.05 in analysis of variance, which shows that correlation between variables are significantly high. 3. This research suggests that students obtain the experience of group activity which is difficult to approach by regular curricular activity. As a result, to improve the highly motivated study and the better satisfaction in college life, Dong-A-Ry activities are needed. And Dong-A-Ry activity can be efficiently facilitated by active participants, efficient program development, facilitator's leadership and so on.

• Journal of Korean society of Dental Hygiene
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• v.21 no.5
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• pp.629-637
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• 2021

Objectives: The purpose of this study was to investigate the degree of activity restriction and the number of remaining teeth of the elderly and to analyze the correlation. Methods: Statistical analysis of the collected data was analyzed using the SPSS window program 25.0 version (IBM) using a composite sample for the analysis of the 7th National Health and Nutrition Survey data, and a composite sample multiple logistic regression analysis was performed to confirm the effect of activity restrictions on the number of remaining teeth. Results: As a result of analyzing the effect of activity restriction on the number of remaining teeth, in the model that analyzed only activity restriction variables, the risk ratio of less than 20 remaining teeth was 1.61 times higher and the age-adjusted model, the risk ratio of less than 20 remaining teeth was 1.46 times higher (p<0.001). In the model that corrected all variables, the results were not statistically significant. Conclusions: In this study, the relationship between activity restriction and the number of remaining teeth could be confirmed, and in subsequent studies, more in-depth studies are considered to be needed using sub-variables that specifically reflect the reasons for activity restriction.