• Journal of the Mineralogical Society of Korea
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• v.32 no.2
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• pp.103-111
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• 2019

In this study, characteristics of sediments and suspended solids flowing into Andong and Imha Dam was analyzed by color, X-ray diffraction and ICP/MS analysis. The minerals of sediments and suspended solid consist mainly of quartz, albite, chlorite, illite and small amounts of montmorillonite and kaolinite. Unlike the Andong Dam, the Imha Dam sediments contain large amounts of calcite. Color of sediments and suspended solids varies from grayish brown to dark orange. The concentrations of major heavy metals of sediments and suspended solids in the Andong and the Imha Dam are higher than the US National Oceanic and Atmospheric Administration standard values. The concentration of heavy metals in sediments of Andong is higher than that of Imha Dam because concentration of heavy metals in the suspended solid flowing into Andong is higher than that of Imha Dam.

• Journal of Environmental Impact Assessment
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• v.19 no.5
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• pp.465-473
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• 2010

This study was carried out to investigate the effect of EFDC hydrodynamic result on the WASP7.3 water quality modeling result in accordance with the change of number of grid for the dam reservoir to be constructed. The simulated flow and BOD, T-N and T-P loads by the HSPF watershed model was used for boundary conditions and the hydrodynamic modeling results was linked with WASP model to predict future water quality after dam construction. The scenarios for EFDC modeling were composed of Scenario 1(141 grid cells) and Scenario 2(568 grid cells). The results of Scenario 2 showed that BOD, T-N, T-P and Chl-a concentrations were decreased 0.073mg/L(8.5%), 0.032mg/L(2.6%), 0.003mg/L(6.8%), 0.644mg/L(4.2%) compared with those of Scenario 1, respectively. As number of grid cell increased, water quality concentrations were decreased and also it caused the longer running time. Therefore, this study suggests that the consideration of the geometry of water body is more important than the number of grid cells for the prediction of water quality of a dam reservoir in EIA.

• The Journal of Internal Korean Medicine
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• v.41 no.5
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• pp.800-805
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• 2020

Objectives: The aim of this study was to report the effect of Korean medicine treatment on a cerebellar infarction patient suffering from vertigo, ataxia, and nausea. Methods: We treated the patient with herbal medicine (Cheonghunhwadam-tang), acupuncture, and physical therapy. Clinical symptoms were assessed with a numeral rating scale (NRS), the Dizziness Handicap Inventory (DHI), and Study Short Form-36 (SF-36). Results: After 24 days of treatment, the vertigo, ataxia, and nausea symptoms were all improved, and the NRS, DHI, and SF-36 scores showed improvement. Conclusion: This case shows that Korean medicine treatments were effective in alleviating the symptoms of cerebellar infarction.

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2018.11a
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• pp.85-88
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• 2018

• Computational Structural Engineering
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• v.22 no.4
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• pp.19-26
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• 2009

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.1344-1345
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• 2011

경북 군위군 고로면에 위치한 저수용량 48,000천톤의 군위 다목적댐에 설치된 소수력발전기에 대한 설치공사 중 수차 설계도면 해석오류에 의한 Guide Vane(이하 G/V로 함.) 과다개방으로 인한 설비고장 및 개선사례, 년 중 댐 수위 변동을 감안한 정격수위와 저수위 시의 수차효율 시험을 통한 댐 수위별 최적의 발전설비 운영방안을 검토하여 저탄소 녹색에너지원인 군위다목적댐 소수력의 발전수익 증대를 도모하였다.

• Journal of the Mineralogical Society of Korea
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• v.20 no.3
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• pp.213-222
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• 2007

Changes of turbidity and suspended solid concentration of inflow tend to be very similar in Andong and Imha dam, and show significant effect on the amount of rainfall. Concentrations of suspended solid and turbidity in Imha are higher than these of Andogn dam, and Banbyon have higher values than that of Yongjeon stream in Imha dam. There is no difference in size distribution and mineral composition of the suspended particles in Andong and Imha dam. The turbidity-causing materials are composed of vermiculite. illite, kaolinite, quartz and albite. X-ray diffraction analysis shows that turbidity-causing materials are have similar mineralogy between Andong and Imha Dam, but they have different abundance.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.21 no.2
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• pp.110-119
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• 1999

The principle of guided tissue regeneration (GTR), as applied to bone healing, is based on the prevention of connective tissue from entering the bony defect during the healing phase. This allows the slower bone producing cells to migrate into and reproduce bone within the defect. The principle of guided tissue regeneration has demonstrated a level of success in regenerating bone defect. Several types of membrane barrier, each one with distinct properties, have been utilized to apply this principle in bone regeneration. The purpose of this study is to introduce and discuss the attributes of rubber dam as a barrier membrane and evaluate whether improved bone regeneration can be achieved by GTR using rubber dam. In the 15 New Zealand white rabbits, full-thickness bone defects on three sites of each rabbit calvaria were made. Non membrane group served as a control and experimental group 1 was covered with rubber dam and group 2 covered with Gore-Tex$^{TM}$ membrane. Macroscopic, radiographic, microscopic examinations were made serially on 1, 2, 3, 6, 12 weeks after operation. The results were as follows: 1. Macroscopically, the control site was collapsed and filled with connective tissue throughout the experimental period. But the defects of experimental groups 1 and 2 were filled with bone-like mass and showed the hard consistency on palpation. 2. Radiographically, the early new bone formation appeared similarly from the host bone in groups 1 and 2. 3. Microscopically, there were much connective tissue at the central part of control site but the defect of group 1 and 2 was filled with the mature bony trabeculae on the 12th week. This results suggest that rubber dam can be effectively used as a barrier membrane for guided bone regeneration.

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2008.10a
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• pp.99-102
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• 2008

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2010.04a
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• pp.108-111
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• 2010