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( Ai Nakamura ),( Ayako Tachifuji ),( Yasushi Matsufuji ),( Mitsuhiro Nakamura ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 3RINCs초록집 Vol.2015 No.-
The recycling activity of wastes has been promoting recently in Japan, however the recycling rate of food wastes is 20.4% in 2012, which is lower than those of other wastes. This was attributed to the shortage of demands of recycling due to the unstable quality and supply of recycled product. To solve these problems, Tanimura et.al1) suggested the new back-up method that the composts made from food waste were used as the cover soil in landfill, to promote the stabilization of incineration ashes by microbial activities1), 2). In this study, the effect of the easily degradable organic matter (EDOM) content in composts for the stabilization of incineration ashes was compared by using test columns simulated landfill within the different composts of the EDOM content. This was due to the incineration ashes contained little nutrient for the growth of microorganisms as well as microorganisms. The results suggested that the compost containing rich EDOM content was more effective on the neutralization and enrichment of microorganisms which were part of the promotion processes for rehabilitation of landfill with incineration ashes mainly.
Class Material Presentation Aimed at Communication between Student and Teacher
Mitsuhiro Takasaki,Kiyoshi Yonemitsu,Takaaki Koga,Toshiko Fujii,Masami Tashiro,Kouji Nagatani,Takatoshi Nakamura,Kazuhiro Sumi,Shigeru Hoyashita 한국콘텐츠학회 2012 ICCC International Digital Design Invitation Exhib Vol.2012 No.12
OVERVIEW OF RECENT EFFORTS THROUGH ROSA/LSTF EXPERIMENTS
Nakamura, Hideo,Watanabe, Tadashi,Takeda, Takeshi,Maruyama, Yu,Suzuki, Mitsuhiro Korean Nuclear Society 2009 Nuclear Engineering and Technology Vol.41 No.6
JAEA started the LSTF experiments in 1985 for the fourth stage of the ROSA Program (ROSA-IV) for the LWR thermal-hydraulic safety research to identify and investigate the thermal-hydraulic phenomena and to confirm the effectiveness of ECCS during small-break LOCAs and operational transients. The LSTF experiments are underway for the ROSA-V Program and the OECD/NEA ROSA Project that intends to resolve issues in thermal-hydraulic analyses relevant to LWR safety. Six types of the LSTF experiments have been done for both the system integral and separate-effect experiments among international members from 14 countries. Results of four experiments for the ROSA Project are briefly presented with analysis by a best-estimate (BE) code and a computational fluid dynamics (CFD) code to illustrate the capability of the LSTF and codes to simulate the thermal-hydraulic phenomena that may appear during SBLOCAs and transients. The thermal-hydraulic phenomena dealt with are coolant mixing and temperature stratification, water hammer up to high system pressure, natural circulation under high core power condition, and non-condensable gas effect during asymmetric SG depressurization as an AM action.
OVERVIEW OF RECENT EFFORTS THROUGH ROSA/LSTF EXPERIMENTS
HIDEO NAKAMURA,TADASHI WATANABE,TAKESHI TAKEDA,YU MARUYAMA,MITSUHIRO SUZUKI 한국원자력학회 2009 Nuclear Engineering and Technology Vol.41 No.6
JAEA started the LSTF experiments in 1985 for the fourth stage of the ROSA Program (ROSA-IV) for the LWR thermal-hydraulic safety research to identify and investigate the thermal-hydraulic phenomena and to confirm the effectiveness of ECCS during small-break LOCAs and operational transients. The LSTF experiments are underway for the ROSA-V Program and the OECD/NEA ROSA Project that intends to resolve issues in thermal-hydraulic analyses relevant to LWR safety. Six types of the LSTF experiments have been done for both the system integral and separate-effect experiments among international members from 14 countries. Results of four experiments for the ROSA Project are briefly presented with analysis by a best-estimate (BE) code and a computational fluid dynamics (CFD) code to illustrate the capability of the LSTF and codes to simulate the thermal-hydraulic phenomena that may appear during SBLOCAs and transients. The thermal-hydraulic phenomena dealt with are coolant mixing and temperature stratification, water hammer up to high system pressure, natural circulation under high core power condition, and non-condensable gas effect during asymmetric SG depressurization as an AM action.
Coal Type Selection for Thermal Power Plants through Combustion State Estimation
Satoru GOTO,Shinji KATAFUCHI,Mitsuhiro SUEYOSHI,Toshihiko FURUE,Yoshitaka UCHIDA,Hironori HATAZAKI,Masatoshi NAKAMURA 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this paper, a coal type selection method for a coal fired boiler in a thermal power station is proposed. Combustion of coal and fusibility of fly ash are evaluated by using coal and fly ash properties. Combustion state in a coalfired boiler is estimated by the evaluated combustibility of coal and fusibility of fly ash. Applicable coal type is selected by the estimated combustion state. The proposed coal type selection method is evaluated by the data collected in an actual thermal power plant.
Demulsification of O/W Emulsion and Subsequent Water Treatment Using Powder Adsorbent
Yasushi Takeuchi,Lee, Sung Sik,Mitsuhiro Nakamura 한국화학공학회 1989 NICE Vol.7 No.2
Demulsification of stable oil-in-water emulsion was studied using powder adsorbent. Among various adsorbents tested, activated carbon was found to be the most efficient regardless of the type of surfactants used. The more dose of activated carbon for the demulsification was required, the higher concentration of the surfactant as well as the larger amount of oil and the bigger size of the lipophilic and hydrophilic groups. Empirical equations were obtained to correlate the dose of activated carbon to the residual concentration of oil as a function of the initial concentration of surfactant.