• Proceedings of the KSME Conference
• /
• 2005.11a
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• pp.196.1-196.1
• /
• 2005

• Magazine of the Korea Concrete Institute
• /
• v.20 no.5
• /
• pp.43-52
• /
• 2008

• Proceedings of the Korean Environmental Sciences Society Conference
• /
• 2017.10a
• /
• pp.129-129
• /
• 2017

• Proceedings of the Korean Environmental Sciences Society Conference
• /
• 2017.10a
• /
• pp.135-135
• /
• 2017

• Proceedings of the Korean Environmental Sciences Society Conference
• /
• 2017.10a
• /
• pp.99-99
• /
• 2017

• Magazine of the Korea Concrete Institute
• /
• v.23 no.2
• /
• pp.47-51
• /
• 2011

• Proceedings of the Korea Concrete Institute Conference
• /
• 1996.10a
• /
• pp.271-275
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• 1996

This study was performed to analyze flowing properties with kinds of the super-plasticizer and flowing effects with agitation method of the mixer truck. After that, this study presents the reference data about better flowing method and quality control when flowing concrete is applied in practice.

• Proceedings of the Korea Concrete Institute Conference
• /
• 1990.10a
• /
• pp.113-116
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• 1990

This study is designed to analyze the variation of grading and shape of aggregate with the number of rotations of Los-Angeles abrasion machine, and is aimed to analyze the effect of slump and compressive strength of strength of concrete with the shape of coarse aggregate by the abrasion act.

• Magazine of RCR
• /
• v.16 no.3
• /
• pp.59-65
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• 2021

• 한국생물공학회:학술대회논문집
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• 2005.10a
• /
• pp.340-342
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• 2005

An agar degrading bacterium, This strain was isolated from sea water in Jeju. The strain is Gram-negative, rod and strictly aerobe for growth. The identification bases on the 16S rRNA gene sequencing showed that the strain was closely related to the genus Agariovarans sp. and named Agariovorans sp. JA1. The strain grew on agar as a sole carbon and energy source and produced an extra cellular agarase. For the increase of agarase productivity, 0.5% agar, yeast extract and $NaNO_3$ were used as carbon, organic and inorganic nitrogen source, respectively. For effective production of agarase and growth, the pH, temperature and NaCl concentration were was pH 7, $25^{\circ}C$ $^{\sim}$ $30^{\circ}C$ and 2%, respectively.