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  1. No Access

    Article

    Lifting Test and Analysis of a Segmented Arch System with Outrigger Ribs and Flexural Loading Tests of Precast Panels

    A segmented precast panel arch system with a steel outrigger rib was proposed to efficiently exploit material characteristics and a structural section, which resists the internal and external forces caused by ...

    Seok Hyeon Jeon, Kwang-Il Cho, Won-Hong Lee in KSCE Journal of Civil Engineering (2021)

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    Article

    Free and forced vibration analysis of laminated composite plates and shells using a 9-node assumed strain shell element

    The natural frequencies of isotropic and composite laminates are presented. The forced vibration analysis of laminated composite plates and shells subjected to arbitrary loading is investigated. In order to ov...

    Won-Hong Lee, Sung-Cheon Han in Computational Mechanics (2006)

  3. No Access

    Article

    Fabrication of protein a-viologen hetero Langmuir-Blodgett film for fluorescence immunoassay

    Protein A molecular thin film was fabricated as a platform of antibody-based biosensor. For the immobilization of the protein A thin film, a viologen multilayer was built up using the Langmuir-Blodgett (LB) te...

    Woochang Lee, Bum Suk Chun, Byung-Keun Oh in Biotechnology and Bioprocess Engineering (2004)

  4. No Access

    Article

    Nano-scale probe fabrication using self-assembly technique and application to detection ofEscherichia coli O 157∶H7

    A self-assembled monolayer of protein G was fabricated to develop an immunosensor based on surface plasmon resonance (SPR), thereby improving the performance of the antibody-based biosensor through immobilizin...

    Byung-Keun Oh, Woochang Lee, Won Hong Lee in Biotechnology and Bioprocess Engineering (2003)

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    Article

    Surface plasmon resonance immunosensor for detection ofLegionella pneumophila

    An immunosensor based on surface plasmon resonance (SPR) onto a protein G layer by self-assembly technique was developed for detection ofLegionella pneumophila. The protein G layer by self-assembly technique was ...

    Byung-Keun Oh, Woochang Lee, Young Min Bae in Biotechnology and Bioprocess Engineering (2003)

  6. No Access

    Article

    Deposition behavior and photoelectrochemical characteristics of chlorophylla Langmuir-Blodgett films

    The deposition behavior and photoelectric response characteristics of chlorophylla (Chla) monolayers and multilayers were investigated under various film fabrication conditions. Chla LB films were deposited onto ...

    Hyun-Goo Choi, Byung-Keun Oh, Won Hong Lee in Biotechnology and Bioprocess Engineering (2001)

  7. No Access

    Article

    Ultrasonic pretreatment for thermophilic aerobic digestion in industrial waste activated sludge treatment

    In order to enhance the degradation efficiency of waste activated sludge (WAS) by thermophilic aerobic digestion, an ultrasonic pretreatment was examined. It was observed that ultrasonic pretreatment increased...

    Young-Kee Kim, Myung-Shin Kwak, Won Hong Lee in Biotechnology and Bioprocess Engineering (2000)

  8. No Access

    Article

    Approximated solution of model for three-phase fluidized bed biofilm reactor in wastewater treatment

    An approximated analytical solution of mathematical model for the three phase fluidized bed bioreactor (TFBBR) was proposed using the linearization technique to describe oxygen utilization rate in wastewater t...

    Jeong-Woo Choi, Junhong Min, Won-Hong Lee in Biotechnology and Bioprocess Engineering (2000)

  9. No Access

    Article

    Kinetic model for biotransformation of digitoxin in plant cell suspension culture ofDigitalis lanata

    Batch suspension cultures ofDigitalis lanata plant cell were performed to investigate the biotransformation of digitoxin.Digitalis lanata K3OHD plant cells were used to biotransform digitoxin into deacetyllanatos...

    Jeong-Woo Choi, Young-Kee Kim, Hyun-Kyu Park in Biotechnology and Bioprocess Engineering (1999)

  10. No Access

    Article

    Bioreactor operating strategy inThalictrum rugosum plant cell culture for the production of berberine

    Optimal substrate feeding strategy in bioreactor operation was investigated to increase the production of secondary metabolite in a high density culture of plant cell. It was accomplished by the previously pro...

    Jeong-Woo Choi, Young-Kee Kim, Won Hong Lee in Biotechnology and Bioprocess Engineering (1999)

  11. No Access

    Article

    Kinetic model of cell growth and secondary metabolite synthesis in plant cell culture ofThalictrum rugosum

    A structured kinetic model was proposed to describe cell growth and synthesis of a secondary metabolite, berberine, in batch suspension culture ofThalictrum rugosum. The model was developed by representing the ph...

    Jeong-Woo Choi, Young-Kee Kim, Won Hong Lee in Biotechnology and Bioprocess Engineering (1999)

  12. Article

    Mathematical model for a three-phase fluidized bed biofilm reactor in wastewater treatment

    Jeong-Woo Choi, Juhong Min, Won-Hong Lee in Biotechnology and Bioprocess Engineering (1999)

  13. No Access

    Article

    Mathematical model for a three-phase fluidized bed biofilm reactor in wastewater treatment

    A mathematical model for a three phase fluidized bed bioreactor (TFBBR) was proposed to describe oxygen utilization rate, biomass concentration and the removal efficiency of Chemical Oxygen Demand (COD) in was...

    Jeong-Woo Choi, Juhong Min, Won-Hong Lee in Biotechnology and Bioprocess Engineering (1999)

  14. No Access

    Article

    Application of genetic algorithm to self-organizing fuzzy controller in fed-batch culture ofScutellaria baicalensis G. plant cell

    A self-organizing fuzzy controller is constructed for control of substrate concentration in fed-batch operation of a cell culture process. A genetic algorithm is used to generate fuzzy rules of the self-organi...

    Jeong-Woo Choi, ** Man Cho, Jung Gun Lee in Korean Journal of Chemical Engineering (1998)

  15. No Access

    Article

    Separation and concentration of L-phenylalanine using a supported liquid membrane

    The separation and concentration of L-phenylalanine (L-Phe) using a supported liquid membrane (SLM) is investigated. A cation complex agent, di-2-ethylhexyl phosphoric acid (D2EHPA), is used as a carrier in the S...

    Jeong Woo Choi, Kyung Sang Cho, Suk Kyu Ko in Biotechnology and Bioprocess Engineering (1998)

  16. No Access

    Article

    Fuzzy control of ethanol concentration for emulsan production in a fed-batch cultivation ofAcinetobacter Calcoaceticus RAG-1

    A fuzzy control system was organized and applied to the control of ethanol concentration in a fed-batch cultivation process for emulsan production byAcinetobacter calcoaceticus RAG-1. The membership functions and...

    Jeong-Woo Choi, Seung-Mok Oh, Hyun-Goo Choi in Korean Journal of Chemical Engineering (1998)

  17. No Access

    Article

    Signal analysis of fiber-optic biosensor for the detection of organophosphorus compounds in the contaminated water

    The fiber-optic biosensor consisted of tubular enzyme reactor and two sensing parts was developed for the detection of organophosphorus compounds in a contaminated water. The organophosphorus compounds was mea...

    Jeong-Woo Choi, Junhong Min, Won-Hong Lee in Korean Journal of Chemical Engineering (1997)

  18. No Access

    Article

    Kinetic model for effects of ethanol and phosphate on cell growth and emulsan production inAcinetobacter calcoaceticus RAG-1

    A mathematical kinetic model was proposed to describe the cell growth and the emulsan production in batch cultivations ofAcinetobacter calcoaceticus RAG-1. Ethanol and phosphate concentrations were chosen as the ...

    Jeong-Woo Choi, Hyun-Goo Choi, Sang-Baek Lee in Korean Journal of Chemical Engineering (1996)

  19. No Access

    Article

    Analysis of culture fluorescence by a fiber-optic sensor inNicotiana tabacum plant cell culture

    The on-line sensing of viable cell weight in plant cell culture process is applied to analysis and control of process. The fiber-optic fluorescence sensor was constructed to measure the NADH-dependent fluoresc...

    Jeong-Woo Choi, Jun Hyo Park, Shin Chul Lee in Korean Journal of Chemical Engineering (1995)

  20. No Access

    Article

    Cavity formation in turbine stirred gas-liquid dispersion system

    To detect the cavities formed behind the impeller blades, the electrical resistivity tech-nique was employed in this study. The transition conditions between large cavity and clinging cavity were easily detect...

    Ho-Ryong Lee, Yun-Jun Huh, Cheong-Song Choi in Korean Journal of Chemical Engineering (1992)

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