• The Journal of the Korean dental association
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• v.13 no.6
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• pp.529-531
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• 1975

This observation was carried out to investigate the phosphatase activity and the calcium contents of periapical granuloma in patients of both sex and different age. The results were as follows : 1. Acid phosphatase activity was considerably increased with bone absorption. 2. Alkaline phosphatase activity was also remarkably increased in periapical granuloma. 3. In case of periapical granuloma, differences of phosphatase activity by age and sex were not observed. 4. Calcium contents in periapical granuloma was of very small quantity, showing remarkable decrease when compared with the normal bone tissue.

• Proceedings of the Korea Contents Association Conference
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• 2019.05a
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• pp.339-340
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• 2019

The society seeks creative talents. Expressive activities are educational activities that stimulate imagination, realize such through body, and enable communication with the society. In such perspective, it is quite meaningful to investigate educational objective that expressive activity shall possess as class to cultivate creativity. Therefore, this study aims to investigate creativity theory, analyze expressive activities as national curriculum at elementary schools, understand the position of expressive activities in Korea, and understand creative educational objective and value of expressive activities, in order to suggest idea for practical goal of expressive activities.

• Korean Journal of Oriental Medicine
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• v.16 no.3
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• pp.175-178
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• 2010

The aim of this study is to compare antioxidant activity and total polyphenol contents between before and after fermentation of Ssanghwa-tang according to solvent partition. Ssanghwa-tang was fermented with Lactobacilus fermentum. Ssanghwa-tang and the fermented Ssanghwa-tang were fractioned by solvent partition with ethyl acetate, butanol and water. The Ssanghwa-tangs and their solvent fractions were evaluated for total polyphenol contents and DPPH radical scavenging activity. The antioxidant activity as well as the total polyphenol contents were highest in each ethyl acetate fraction and significantly (p<0.05) increased after fermentation.

• Korean Journal of Health Education and Promotion
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• v.33 no.3
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• pp.109-119
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• 2016

Objectives: To review policy contents which can have a direct impact on health-enhancing physical activity(PA) prevalence in Korea. Methods: The web-search and a literature was undertaken to identify reports and documents related to policy contents of PA. The web-search mainly focused on the web site of the departments and organizations relevant to PA policy and was supplemented by the literature searching. Results: The results of this study are as follows: First, the goal of PA does not match the established number of the Health Plan(HP). Second, the recommended levels of PA is not the same as levels of the year of establishment of the HP. Third, the questions of monitoring tool were inconsistent across years. Conclusions: Therefore, policy contents of physical activity should be improved to ensure accurate PA prevalence in Korea.

• Preventive Nutrition and Food Science
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• v.20 no.3
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• pp.210-214
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• 2015

Grape pomace is an abundant source of underutilized winery by-products. Polyphenols were extracted from grape pomace using cellulase and gluco-amylase enzymes. 2,2-diphenyl-1-picrylhydrazyl (DPPH) and Folin-Ciocalteu's assays were used to measure antioxidant activity and total polyphenolic contents. Both cellulase, and gluco-amylase digested grape pomace showed efficient radical scavenging activity. In addition, the total polyphenolic contents of cellulase digested grape pomace showed lower concentrations were effective compared to higher concentrations, whereas glucoamylase enzyme did not show remarkable variations. The DPPH radical scavenging activity and total polyphenolic contents were significantly higher in the cellulase digested grape pomace compared to the gluco-amylase digested and the not digested grape pomace. It is notable that enzymatic digestions were efficient for extracting polyphenols from grape pomace. The underutilized grape pomace polyphenols can be further used for food safety as a natural antioxidant.

• Nutrition Research and Practice
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• v.9 no.6
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• pp.569-578
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• 2015

BACKGROUND/OBJECTIVES: Fermentation can increase functional compounds in fermented soybean products, thereby improving antioxidant and/or anti-inflammatory activities. We investigated the changes in the contents of phenolics and isoflavones, antioxidant activity and anti-inflammatory activity of Doenjang during fermentation and aging. MATERIALS/METHODS: Doenjang was made by inoculating Aspergillus oryzae and Bacillus licheniformis in soybeans, fermenting and aging for 1, 3, 6, 8, and 12 months (D1, D3, D6, D8, and D12). Doenjang was extracted using ethanol, and sequentially fractioned by hexane, dichloromethane (DM), ethylacetate (EA), n-butanol, and water. The contents of total phenolics, flavonoids and isoflavones, 2,2-diphenyl-1 picryl hydrazyl (DPPH) radical scavenging activity, and ferric reducing antioxidant power (FRAP) were measured. Anti-inflammatory effects in terms of nitric oxide (NO), prostaglandin (PG) E2 and pro-inflammatory cytokine production and inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 expressions were also measured using LPS-treated RAW 264.7 macrophages. RESULTS: Total phenolic and flavonoid contents showed a gradual increase during fermentation and 6 months of aging and were sustained thereafter. DPPH radical scavenging activity and FRAP were increased by fermentation. FRAP was further increased by aging, but DPPH radical scavenging activity was not. Total isoflavone and glycoside contents decreased during fermentation and the aging process, while aglycone content and its proportion increased up to 3 or 6 months of aging and then showed a slow decrease. DM and EA fractions of Doenjang showed much higher total phenolic and flavonoid contents, and DPPH radical scavenging activity than the others. At $100{\mu}g/mL$, DM and EA fractions of D12 showed strongly suppressed NO production to 55.6% and 52.5% of control, respectively, and PGE2 production to 25.0% and 28.3% of control with inhibition of iNOS or COX-2 protein expression in macrophages. CONCLUSIONS: Twelve month-aged Doenjang has potent antioxidant and anti-inflammatory activities with high levels of phenolics and isoflavone aglycones, and can be used as a beneficial food for human health.

• School Mathematics
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• v.14 no.4
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• pp.553-564
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• 2012

Story corners in elementary school mathematics practice activity books are newly given for students not only to have interests in mathematics, but to solve story problems related to already learned mathematical contents. In this study, we investigate the story corners in third grade mathematics practice activity books to analyze the contents according to their utilizations. We also suggest their implications. Based on our analysis, we have the following results. First, there are cases where the contents of the story are not related to the corresponding learning contents. Second, there are cases where some the contents or the posed problems related to the story are hard to be understood by students. Third, there are cases where the posed problems are not related to the corresponding learning contents.

• Korean Journal of Soil Science and Fertilizer
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• v.46 no.1
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• pp.32-39
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• 2013

The relationship between relative water contents of lettuce leaves and biochemical activities in lettuce was examined in this study to explore an adaptation response of lettuce to water stress from soils. Soil water contents and relative water contents of leaves were positively related to show $R^2$=0.8728. Hydrogen peroxide contents of leaves rapidly increased with reduction of soil water content, whereas soluble protein contents and dry matters rapidly decreased. And chlorophyll a and b contents of leaves decreased with increase in carotenoid content. Furthermore, the activities of ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), and dehydroascorbate reductase (DHAR) increased dramatically, and mRNA transcript levels of APX, MDHAR and DHAR also increased. Relationship of relative water content of lettuce leaves to hydrogen peroxide, to ascorbate peroxidase activity, to dehydroascorbate reductase activity, and to monodehydroascorbate reductase activity was shown to be positively correlated. It is highly plausible from this study that these enzyme activities could be developed as an indicator of water states in soils.

• Philosophy of Education
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• no.52
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• pp.81-108
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• 2014

The purpose of this study was to investigate critically the existing educational contents and methods on knowledge uncombined with our lives and to explore directions for the integration of educational contents and methods on practical knowledge. For this, firstly, this study selected and analyzed Traditionalism and Progressivism as exclusively opposite approach to education, in particular, the aspect of contents and methods. Next, it explored to define Dewey's activity-based inquiry process. Finally, it showed that the educational contents and methods could not be separated in Dewey's activity-based inquiry process. As a result, educational contents and methods in educational practice were experiences as things integrated. Therefore, knowledge for education has been emphasized as meaningful results that learners have experienced. Once the learners recognize the value and meaning of knowledge, they will be able to internalize the genuine knowledge, moreover they will be self-directed learners. In other words, if learners could discovered their own meaning and value of knowledge in the inquiry process, they have sustainable needs, trying to be involved in the new process based on the knowledge they earned.

• Food Science and Biotechnology
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• v.17 no.2
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• pp.251-256
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• 2008

Changes in antioxidant activity of Rubus coreanus fruit of 3 clones (S13, S114, and S16), which were selected from different sites, were studied at different ripening stages. Antioxidant activities (tree radical scavenging activity and reducing power) were determined and their relationships to total phenolic contents and ascorbic acid were analyzed. The highest tree radical scavenging activities of 3 clones (S13, S14, and S16) were 79.39, 75.80, and 81.16% at $125\;{\mu}g/mL$, respectively. In general, the antioxidant activity and the related parameters, including total phenolic content and vitamin C content decreased during fruit ripening. Total phenolic contents of the R. coreanus fruits (S13, S14, and S16) were correlated with tree radical scavenging activity ($R^2=0.8114$, 0.9186, and 0.9714). These results improve knowledge of the effect of ripening on the antioxidant activity and related compounds contents that could help to establish the optimum R. coreanus fruit harvest data for various usages.