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양승민(Seung Min Yang),이현재(Hyun Jea Lee),남정빈(Jeong Bin Nam),오근혜(Geun Hye Oh),이석언(Seok Eon Lee),강석구(Seog Goo Kang) 한국펄프·종이공학회 2017 펄프.종이技術 Vol.49 No.6
This study was conducted to investigate the feasibility of using positively charged torrefied wood flour (TWF) from an damaged wood by pest for raw material of pellet and particle boards. The positively charged torrefied wood flour was evaluated for zeta potential to measure surface charge, removal efficiency of turbidity, optical density, chlorophyll-a, PO4-P as algal bloom remover. The zeta potential of the algal bloom was negatively charged. But The samples prepared through the surface modification treatment exhibited a positive zeta potential of -0.2 mV ~ 31.2 mV. The addition of positively charged torrefied wood flour reduced the turbidity from 83.8 ntu at the initial time to 10 ntu after 8 hours. Optical density results were similar to turbidity. The removal rate of chlorophyll-a was 92% after 8 hours. The removal rate of dissolved phosphorus, which is a cause of algal bloom, was 6.5% for activated carbon and 10% for TWF C-PAM 3 wt%. Therefore, the usefulness as algal bloom remover was confirmed through the results of the removal rate turbidity, optical density, chlorophyll-a, and PO₄-P.
김홍주(Hong Ju Kim),이현재(Hyun Jae Lee),유제훈(Jea Hoon Yoo),주범순(Bheom Soon Joo),이종현(Jong Hyun Lee) 대한전자공학회 2011 대한전자공학회 학술대회 Vol.2011 No.12
본 논문에서는 패킷-광 통합 전달망의 개념 및 그 망 적용에 관한 연구 내용으로, 향후 망 진화를 위한 차세대 전달망으로 패킷-광 통합 전달망을 고려하고, KOREN망 선제적 운용을 통한 망 적용의 검증을 수행하고, 사업자 망에서의 단계별 적용 방안을 제시한다.