• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.594-596
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• 2012

Currently, demands for outdoor broadcasts and concerts are increasing. Due to severe circumstance of outdoor places like rain, wet-damage in moved loudspeaker may occur. Experimental approaches to improve waterproof-effect for movable loud speaker have been investigated in this studies. For performance test of loud speaker, enclosures were made by MDF(Medium Density Fiberboard). Three types of finishing material, general paint, sheet paper and FRP(Fiber Reinforced Plastics) are proposed for comparing waterproof-effects.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.35 no.3
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• pp.1-12
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• 2017

The purpose of this study is to interpret the landscape of Soyojeong, Taegeojeong, Chungeuijeong and Chwihanjeong in the Ongnyucheon region of the Changdeokgung Palace by analyzing the landscape elements using the pavilion's hanging couplets. Next, the landscape elements would be classified and interpreted by the Tang dynasty poet named Wang Changnyeong(王昌齡, 698-757) who put forward the range of aesthetics. According to the three kinds of classified boundaries, the results were as follows. First, the characteristics of the 'Wujing(物境)' described at spring dawn or in the moonlit night when the rain stopped, dew condensed, blooming flowers were in the quiet garden, fishes were drawn from the pond, and golden ogres sung in a dense pine forest. Second, the characteristics of 'Qingjing(情境)' described the emperor who held a grand ceremony: he sat in the jade throne, red curtains and gorgeous fans are propped up etc. All of these were used to praise the reign of a stable and peaceful nation. Third, the characteristics of 'Yijing(意境)' mainly described the Ongnyucheon region's scenery as an immortal world where people can experience and reach a high spiritual realm such as the 'integrated as one(物我一體)'.

• The Journal of Korean Medicine
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• v.28 no.3 s.71
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• pp.57-69
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• 2007

Objectives : Diabetes is a disease in which the body does not produce or properly use insulin. Etiological studies of diabetes and its complications have shown that oxidative stress might play a major role. Therefore, many methods have been tried to regulate free oxygen radicals for treating diabetes and its complications. Ojung-hwan, composed of five crude herbs, has been considered effective for treating symptoms of aging. In male ob/ob mouse of severe obesity, hyperinsulinemia and hyperlipidemia, which are features of NIDDM, the hyperglycemic activities and mechanisms of Ojung-hwan were examined. Methods : Mice were grouped and treated for 5 weeks as follows. Both the lean (C57/BL6J black mice) and diabetic (ob/ob mice) control groups received standard chow. The experimental groups were fed a diet of chow supplemented with 30 and 90 mg Ojung-hwan per 1 kg of body weight for 14 days. The effects of Ojung-hwan extract on the ob/ob mice were observed by measuring the serum levels of glucose, insulin, lipid components, and the kidney levels of superoxide anion radical (${\cdot}\;O{_2}{^-}$), MDA+HAE, GSH/GSSG ratio, and also the enzyme activities involved in polyol pathway. Results : Ojung-hwan lowered the levels of serum glucose and insulin in a dose-dependent manner. Total cholesterol, triglyceride and free fatty acid levels decreased, while the HDL-cholesterol level increased, in Ojung-hwan treated groups. Renal aldose reductase and sorbitol dehydrogenase activities increased in the ob/ob mice, whereas they were inhibited in the Ojung-hwan treated groups. Ojung-hwan inhibited the generation of ${\cdot}\;O{_2}{^-}$ in the kidney. Finally, MDA+HAE levels increased and GSH/GSSG ratio decreased in the ob/ob mice, whereas they improved in the Ojung-hwan treated groups. Conclusions : Ojung-hwan showed antidiabetic and antihyperlipidemic activities by regulating theactivities of polyol pathway enzymes, scavenging reactive oxygen species and reducing the MDA+HAE levels in the ob/ob mice.