• Proceedings of the KWS Conference
• /
• 2003.11a
• /
• pp.74-76
• /
• 2003

• Proceedings of the Materials Research Society of Korea Conference
• /
• 2005.05a
• /
• pp.197-197
• /
• 2005

• Proceedings of the Materials Research Society of Korea Conference
• /
• 2005.05a
• /
• pp.198-198
• /
• 2005

• Proceedings of the Materials Research Society of Korea Conference
• /
• 2005.05a
• /
• pp.196-196
• /
• 2005

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1996.11a
• /
• pp.24-25
• /
• 1996

• Proceedings of the KWS Conference
• /
• 2001.05a
• /
• pp.265-267
• /
• 2001

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1997.05a
• /
• pp.75-75
• /
• 1997

• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 2003.05a
• /
• pp.74-79
• /
• 2003

Many marine wastes such as seaweeds are casted aside at the seasides. So, the objective of this study is to apply the marine wastes to the concrete. To this end, mortar and concrete tests with the marine wastes have been conducted. The results of the present mortar and concrete tests indicate that the mortar and concrete with marine wastes admixtures exhibits very low permeability. The present study provides a firm base for the use of very low permeable concrete and the application of the marine structures and the submerged structures.

• Proceedings of the Korean Society of Fisheries Technology Conference
• /
• 2000.05a
• /
• pp.239-240
• /
• 2000

용존산소는 양식 시설 내 생산량을 결정짓는 중요한 수질 조건으로서, 시설 내 용존산소를 충분히 공급하기 위해 많은 연구자들이 여러 가지 형태의 에어레이터의 고안(Boyd and Tucker, 1979)및 순수산소의 이용에 관해 연구해왔다. 그러나 에어레이터 또는 순수 산소의 이용은 추가 에너지가 필요한데, 송어 양식장에는 전체비용의 13∼15%, 부화장의 경우에는 23%(Petit, 1990) 및 순환여과식 시설에서는 8.6%(Timmons and Aho, 1998)의 경비가 추가된다고 한다. (중략)

• Journal of Environmental Health Sciences
• /
• v.28 no.1
• /
• pp.93-97
• /
• 2002

The aim of this study was to evaluate on the removal effect of total nitrogen and phosphorus with municipal wastewater in ultrasonic nutrient removal (UNR) process using ultrasonic sludge carbon source. The removal efficiency for total nitrogen was 44.2% at biological nutrient removal (BNR) process, 50.8% at UNR process. The removal efficiency for total phosphorus was 45.6% at BNR process, 46.2% at UNR process. The removal of nitrogen was effectively influenced by ultrasonic sludge carbon source.