• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.2 no.1
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• pp.50-56
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• 1973

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.934-937
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• 2011

As part of our screening of anticariogenic agents from medicinal plants, the ethanol extracts of 10 herbs widely used in the fork medicine were tested for the antimicrobial activity against a cariogenic bacterium Streptococcus sobrinus. The ethanol extracts of Dryopteris crassirhizoma showed antimicrobial activities against S. sobrinus. These results suggested that the extracts of Dryopteris crassirhizoma could be the potential source of antimicrobial agent against S. sobrinus.

• Korean Journal of Plant Taxonomy
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• v.35 no.1
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• pp.1-6
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• 2005

Polystichum chunii Ching is reported as a new record for the fern flora of Hainan Island. Taxonomy and nomenclature of the polystichum species from Hainan island, China are discussed.

• Aerospace Industry
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• v.57
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• pp.34-37
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• 1997

지난 6월의 파리 에어쇼에서 여러가지 최신형 항공기 실물이나 모형이 전시된 가운데 한쪽에서 특이한 대형 항공기가 전시되고 있었다. 그리고 이 항공기 앞에는 내부에 들어가 보려고 순서를 기다리는 관중들의 행렬이 길게 줄서 있어 눈길을 끌었다.

• Computational Structural Engineering
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• v.19 no.2 s.72
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• pp.28-35
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• 2006

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2005.10a
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• pp.20-26
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• 2005

• The Journal of the Acoustical Society of Korea
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• v.9 no.3
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• pp.75-82
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• 1990

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.25 no.12
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• pp.7-18
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• 2007

• Journal of the Korean Geosynthetics Society
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• v.14 no.1
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• pp.33-41
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• 2015

In this study, laboratory tests (flow, unit weight, unconfined compressive strength and bleeding tests) were performed to evaluate engineering properties of treated soil to improve pipe mixing method. As result, flow and bleeding properties are proportional to the water contents. The unit weight and unconfined compressive strength is decreased as the water contents increased. Comparing equipments contact pressure with bearing capacity of the mixed soil for dozer, backhoe and belt conveyor are immediately appliable. The applicable water content range is estimated from 80% to 200% by pipe mixing method using cement. Also, The design chart is developed from the results.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.35 no.5
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• pp.1083-1096
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• 2015

This study utilised Computational Fluid Dynamics(CFD) for preliminary assessment of mixing efficiencies of 2-phase fluids in a pipe at which a slurry flow and an injected solidifier join, for the purposes of reducing trial-and-error-based instances of physical experiments and conducting the overall research in an economical way. Using OpenFOAM$^{(R)}$, we simulated behavior of 3-phase fluids under 18 different settings generated by changing diameters of a dredged soil transportation pipe, a quality improving material injection pipe and the confluence angle. While difference in mixing efficiencies amongst the instances was insignificant, discernible boundary layers amongst the materials were observed in all of the instances. In order to break the boundary layers, we designed a substructure inside a pipe and found out that it could remarkably improve mixing efficiencies particularly for short distance applications.