A Ohashi

Summary

Affiliation: Nagaoka University of Technology
Country: Japan

Publications

  1. ncbi request reprint Phylogenetic diversity of mesophilic and thermophilic granular sludges determined by 16S rRNA gene analysis
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Niigata, Japan
    Microbiology 144:2655-65. 1998
  2. pmc Fluorescence in situ hybridization using 16S rRNA-targeted oligonucleotides reveals localization of methanogens and selected uncultured bacteria in mesophilic and thermophilic sludge granules
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940 2188, Japan
    Appl Environ Microbiol 65:1280-8. 1999
  3. ncbi request reprint Syntrophothermus lipocalidus gen. nov., sp. nov., a novel thermophilic, syntrophic, fatty-acid-oxidizing anaerobe which utilizes isobutyrate
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Niigata, Japan
    Int J Syst Evol Microbiol 50:771-9. 2000
  4. ncbi request reprint Recent advances in methane fermentation technology
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, 1603 1 Kamitomioka, Nagaoka, 940 2188, Niigata, Japan
    Curr Opin Biotechnol 12:277-82. 2001
  5. pmc In situ detection, isolation, and physiological properties of a thin filamentous microorganism abundant in methanogenic granular sludges: a novel isolate affiliated with a clone cluster, the green non-sulfur bacteria, subdivision I
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940 2188, Japan
    Appl Environ Microbiol 67:5740-9. 2001
  6. ncbi request reprint Hydrolytic activity of alpha-amylase in anaerobic digested sludge
    Y Higuchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, 1603 1 Kamitomioka machi, Nagaoka, Niigata 940 2188, Japan
    Water Sci Technol 52:259-66. 2005
  7. doi request reprint Influence of effluent-recirculation condition on the process performance of expanded granular sludge bed reactor for treating low strength wastewater
    W Yoochatchaval
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Niigata, Japan
    Water Sci Technol 57:869-73. 2008
  8. ncbi request reprint Pilot-plant study on anaerobic treatment of a lipid- and protein-rich food industrial wastewater by a thermophilic multi-staged UASB reactor
    T Tagawa
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Kamitomioka, Niigata, Japan
    Water Sci Technol 45:225-30. 2002
  9. ncbi request reprint Molecular and conventional analyses of microbial diversity in mesophilic and thermophilic upflow anaerobic sludge blanket granular sludges
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Niigata, Japan
    Water Sci Technol 45:19-25. 2002
  10. doi request reprint Closed DHS system to prevent dissolved methane emissions as greenhouse gas in anaerobic wastewater treatment by its recovery and biological oxidation
    N Matsuura
    Department of Environmental System Engineering, Nagaoka University of Technology, 1603 1 Kamitomioka, Nagaoka, Niigata 940 2188, Japan
    Water Sci Technol 61:2407-15. 2010

Collaborators

Detail Information

Publications13

  1. ncbi request reprint Phylogenetic diversity of mesophilic and thermophilic granular sludges determined by 16S rRNA gene analysis
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Niigata, Japan
    Microbiology 144:2655-65. 1998
    ..Thirty-six and 24 different sequences were found in the mesophilic and thermophilic clones, respectively, suggesting that the microbial diversity of the thermophilic granule was lower than that of the mesophilic granule...
  2. pmc Fluorescence in situ hybridization using 16S rRNA-targeted oligonucleotides reveals localization of methanogens and selected uncultured bacteria in mesophilic and thermophilic sludge granules
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940 2188, Japan
    Appl Environ Microbiol 65:1280-8. 1999
    ..These results revealed the spatial organizations of methanogens and uncultivated bacteria and their in situ morphologies and metabolic functions in both mesophilic and thermophilic granular sludges...
  3. ncbi request reprint Syntrophothermus lipocalidus gen. nov., sp. nov., a novel thermophilic, syntrophic, fatty-acid-oxidizing anaerobe which utilizes isobutyrate
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Niigata, Japan
    Int J Syst Evol Microbiol 50:771-9. 2000
    ..Hence, the name Syntrophothermus lipocalidus is proposed for TGB-C1T as a new species of a new genus...
  4. ncbi request reprint Recent advances in methane fermentation technology
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, 1603 1 Kamitomioka, Nagaoka, 940 2188, Niigata, Japan
    Curr Opin Biotechnol 12:277-82. 2001
    ....
  5. pmc In situ detection, isolation, and physiological properties of a thin filamentous microorganism abundant in methanogenic granular sludges: a novel isolate affiliated with a clone cluster, the green non-sulfur bacteria, subdivision I
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940 2188, Japan
    Appl Environ Microbiol 67:5740-9. 2001
    ....
  6. ncbi request reprint Hydrolytic activity of alpha-amylase in anaerobic digested sludge
    Y Higuchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, 1603 1 Kamitomioka machi, Nagaoka, Niigata 940 2188, Japan
    Water Sci Technol 52:259-66. 2005
    ..Several-fold higher activity was obtained for starch or maltose as compared to glucose only...
  7. doi request reprint Influence of effluent-recirculation condition on the process performance of expanded granular sludge bed reactor for treating low strength wastewater
    W Yoochatchaval
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Niigata, Japan
    Water Sci Technol 57:869-73. 2008
    ..4 g VSS/L and SVI: 25 mL/g VSS). Furthermore, retained sludge possessed sufficient level of methanogenic activity at 20 degrees C...
  8. ncbi request reprint Pilot-plant study on anaerobic treatment of a lipid- and protein-rich food industrial wastewater by a thermophilic multi-staged UASB reactor
    T Tagawa
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Kamitomioka, Niigata, Japan
    Water Sci Technol 45:225-30. 2002
    ..The replacement of active microbial granules in the sludge bed with the insolubilized protein and lipid brought about deterioration of sludge methanogenic activity...
  9. ncbi request reprint Molecular and conventional analyses of microbial diversity in mesophilic and thermophilic upflow anaerobic sludge blanket granular sludges
    Y Sekiguchi
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Niigata, Japan
    Water Sci Technol 45:19-25. 2002
    ....
  10. doi request reprint Closed DHS system to prevent dissolved methane emissions as greenhouse gas in anaerobic wastewater treatment by its recovery and biological oxidation
    N Matsuura
    Department of Environmental System Engineering, Nagaoka University of Technology, 1603 1 Kamitomioka, Nagaoka, Niigata 940 2188, Japan
    Water Sci Technol 61:2407-15. 2010
    ..01 mgCOD L(-1). The dissolved methane from the UASB reactor was completely eliminated--by more than 99%--by the post-treatment after the two-stage closed DHS system...
  11. ncbi request reprint A low-cost municipal sewage treatment system with a combination of UASB and the "fourth-generation" downflow hanging sponge reactors
    M Tandukar
    Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka 940 2188, Japan
    Water Sci Technol 52:323-9. 2005
    ..Likewise, F. coli were removed by 3.45 log with the final count of 10(3) to 10(4) MPN/100 ml. Nutrient removal by the system was also satisfactory...
  12. ncbi request reprint Acetate synthesis from H2/CO2 in simulated and actual landfill samples
    A C Chen
    Department of Environmental System Engineering, Nagaoka University of Technology, Kamitomioka 1603 1, Nagaoka, Niigata, 940 2188, Japan
    Environ Technol 24:435-43. 2003
    ..Themetabolic versatility of homoacetogens could be the main reason for their success in the landfill..
  13. ncbi request reprint On-site treatment of high-strength alcohol distillery wastewater by a pilot-scale thermophilic multi-staged UASB (MS-UASB) reactor
    M Yamada
    Department of Environmental Systems Eng, Nagaoka University of Tech, Nagaoka, Japan
    Water Sci Technol 53:27-35. 2006
    ....