Jin Seop Bak

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The lignocellulolytic platform of the wood-decaying organism Dichomitus squalens is important for production of biodegradable elements; however, the system has not yet been fully characterized. In this study, using statistical target optimization, we analysed substrate selectivity based on a variety of D. squalens metabolic pathways using combined omics(More)
Dichomitus squalens, a wood-rotting fungus, can utilize recalcitrant biomass for growth; however, the extracellular metabolic processes involved are not well understood. A systematic target analysis of D. squalens has been carried out using optimized conditions for lignocellulolysis. Seven encoded proteins and 58 metabolites that consistently exhibited(More)
Plant biomass can be utilized by a lignocellulose-degrading fungus, Phanerochaete chrysosporium, but the metabolic and regulatory mechanisms involved are not well understood. A polyomics-based analysis (metabolomics, proteomics, and transcriptomics) of P. chrysosporium has been carried out using statistically optimized conditions for lignocellulolytic(More)
To support the inefficient limitation of long-term biosystem by well-known simultaneous saccharification and fermentation (SSF), electron beam irradiated rice straw (at 80 kGy, 1 MeV, and 0.12 mA) was fermented using fungal-based simultaneous saccharification and fermentation (FBSSF) by saprophytic zygomycetes Mucor indicus. Based on the growth optimization(More)
In order to solve the inefficient problem of long-term biodegradation by wood-decaying fungus, rice straw (RS) was depolymerized using electron beam irradiation-based biodegradation (EBIBB). This environment-friendly program without the use of inhibitory byproducts significantly increased the digestibility and fermentability of RS. Specifically, when(More)
In order to address the limitations associated with the inefficient pasteurization platform used to make Makgeolli, such as the presence of turbid colloidal dispersions in suspension, commercially available Makgeolli was minimally processed using a low-pressure homogenization-based pasteurization (LHBP) process. This continuous process demonstrates that(More)
The KSTAR device is a tokamak with a fully superconducting (SC) magnet system, which enables an advanced quasi-steady-state operation. Initial operation of the KSTAR SC magnet system has been accomplished for the first plasma discharge operation. The SC magnet system consists of 16 toroidal field (TF) coils and 14 PF coils, magnetic structures, SC buslines,(More)
  • H L Yang, H K Kim, K M Kim, J W Sa, S T Kim, H T Kim +16 others
  • 2008
The Korea Superconducting Tokamak Advanced Research (KSTAR) device site assembly was completed by May 2007. During the assembly period, several key technologies were developed to assemble the superconducting tokamak and its ancillary systems. As will be described in this paper, we encountered several problems and difficulties that mainly stemmed from the(More)
  • S J Park, J S Oh, J S Bak, M H Cho, W Namkung
  • 2000
For the generation of picosecond (< 100 ps) electron beam pulses, we studied the RF modulation of a conventional triode electron gun. The feasibility study for this scheme has been experimentally investigated by modulating a triode gun of the Y-824 cathode-grid (KG) structure provided by the CPI Eimac, with 2.856-GHz pulsed RF's generated by a solid-state(More)