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Development of Bubble Column for Foam Separation
Bando, Yoshiyuki,Kuze, Takahiro,Sugimoto, Tatsuya,Yasuda, Keiji,Nakamura, Masaaki 한국화학공학회 2000 Korean Journal of Chemical Engineering Vol.17 No.5
The foam separation of metal in model wastewater is performed by using two different bubble columns in a continuous operation mode. The equipment and operation conditions are changed, and the foam flow rate and metal concentration in foam flow are measured. The foam flow ratio (the ratio of foam flow rate to the inlet one) increases with increasing gas velocity, with decreasing liquid velocity, with decreasing foam layer height and with decreasing metal concentration in model wastewater. Metal enrichment (the ratio of metal concentration in foam flow to that in inlet flow) shows the reverse tendencies. When a draft tube is inserted in the bubbling layer, the foam flow rate decreases. The enrichment is strongly governed by the foam flow ratio. Since the foam flow ratio is adjusted by means of the equipment and operation conditions, the metal concentration in foam flow is controlled to be a desired value.
S. Bando,H. Asano,K. Sasajima,N. Odajima,M. Sei,T. Ogata 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
We present the optimal design of energy supply system of a urban microgrid by using a Mixed Integer Non Linear Programming model. We have conducted a feasibility study of energy supply system using waste steam from incinerator plants via a steam distribution network in the urban redevelopment project area in Tokyo as a case study. We compared the optimal configuration of both of a district heat and cooling (DHC) system and a microgrid system with sufficient self generation capacity as an energy supply system in the redevelopment area. We present the economic and environmental effectiveness of the microgrid with large scale cogeneration and steam supply from incinerator plants as unharnessed energy. Large scale cogeneration with high efficiency has capability to reduce 20% of primary energy consumption and 2% of the amount of CO₂ emissions compared with a new constructed DHC system. Steam supply from incinerator plants has capability to reduce about 3% of CO₂ emissions. Pay-back time of the microgrid for commercial and residential area is 4 to 6 years. The microgrid with large scale gas engine generators is economically viable.
坂東俊彦(Bando Toshihiko) 구결학회 2009 구결연구 Vol.23 No.-
奈良의 東大寺는 8세기 740년에 華嚴ㆍ律ㆍ三論ㆍ俱舍ㆍ法相ㆍ成實ㆍ眞言ㆍ天台를 연구하는 학문사원으로서 성립되었다. 한편, 현재의 東大寺 境內, 法華堂에서는 740년 審祥에 의해 일본에서 최초로 《華嚴經》 강설이 거행되었다. 불교 연구를 위해 수많은 經卷ㆍ聖數類가 전해졌던 것으로 보이며, 新羅經으로 보이는 聖敎類가 최근에 확인되었다. 그 후, 동아시아와의 교류가 활발해져 12, 13세기에는 「弘贊法華?」, 高麗(義天)版 「華嚴?隨疏演義?」 등의 수많은 經卷, 聖敎가 전해져 현재에 이르고 있다. 「華嚴?文義要決問答」은 17, 18세기(江戶時代 中期)의 寫本이 남아 있는데, 권1,2만이 있다. 이것들은 권1 부분과 권2 부분은 筆跡이 다르다. 권1,2는 각각 다른 계통의 底本을 사용해 작성한 것으로 생각된다. 나아가 권2에 대해서는 두 가지 형태의 字句 訂正이 있고, 서사할 때 다른 두 계통의 저본이 존재했으며, 이 두 저본을 사용해 교정 작업을 한 것으로 추측된다.
Shen, G. Z.,Bando, Y.,Liu, B. D.,Golberg, D.,Lee, C.-J. WILEY-VCH Verlag 2006 Advanced functional materials Vol.16 No.3
<P>Vertically aligned ZnO nanonails and nanopencils are synthesized on a silicon substrate using a modified thermal-evaporation process, without using a catalyst or predeposited buffer layers. An adiabatic layer is used to provide an abrupt temperature decrease and high gas concentration for the nanostructures growth. The structure and morphology of the as-synthesized ZnO nanonails and nanopencils are characterized using X-ray diffraction, and scanning and transmission electron microscopies. Raman and photoluminescence properties are also investigated at room temperature. Field-emission characterization shows that the turn-on fields for the vertically aligned ZnO nanonails and nanopencils are 7.9 and 7.2 V &mgr;m<SUP>–1</SUP>, respectively.</P> <B>Graphic Abstract</B> <P>Vertically aligned ZnO nanonails and nanopencils (see Figure) are synthesized on a silicon substrate using a modified thermal-evaporation process, without a catalyst or predeposited buffer layer. An adiabatic layer is used to provide an abrupt temperature decrease and high gas concentration for the nanostructures' growth. <img src='wiley_img/1616301X-2006-16-3-ADFM200500571-content.gif' alt='wiley_img/1616301X-2006-16-3-ADFM200500571-content'> </P>