The Experts below are selected from a list of 105204 Experts worldwide ranked by ideXlab platform
Juan Zhao - One of the best experts on this subject based on the ideXlab platform.
-
intensification of β poly l malic acid production by aureobasidium pullulans ipe 1 in the late Exponential Growth phase
Journal of Industrial Microbiology & Biotechnology, 2012Co-Authors: Juan Zhao, Changsheng Qiao, Luhui Ding, Benkun Qi, Yi SuAbstract:β-Poly(malic acid) (PMLA) has attracted industrial interest because this polyester can be used as a prodrug or for drug delivery systems. In PMLA production by Aureobasidium pullulans ipe-1, it was found that PLMA production was associated with cell Growth in the early Exponential Growth phase and dissociated from cell Growth in the late Exponential Growth phase. To enhance PMLA production in the late phase, different fermentation modes and strategies for controlling culture redox potential (CRP) were studied. The results showed that high concentrations of produced PMLA (above 40 g/l) not only inhibited PMLA production, but also was detrimental to cell Growth. Moreover, when CRP increased from 57 to 100 mV in the late Exponential Growth phase, the lack of reducing power in the broth also decreased PMLA productivity. PMLA productivity could be enhanced by repeated-batch culture to maintain cell Growth in the Exponential Growth phase, or by cell-recycle culture with membrane to remove the produced PMLA, or by maintaining CRP below 70 mV no matter which kind of fermentation mode was adopted. Repeated-batch culture afforded a high PMLA concentration (up to 63.2 g/l) with a productivity of 1.15 g l−1 h−1. Cell-recycle culture also confirmed that PMLA production by the strain ipe-1 was associated with cell Growth.
-
intensification of β poly l malic acid production by aureobasidium pullulans ipe 1 in the late Exponential Growth phase
Journal of Industrial Microbiology & Biotechnology, 2012Co-Authors: Weifeng Cao, Juan Zhao, Changsheng Qiao, Luhui Ding, Jianquan Luo, Yinhua WanAbstract:beta-Poly(malic acid) (PMLA) has attracted industrial interest because this polyester can be used as a prodrug or for drug delivery systems. In PMLA production by Aureobasidium pullulans ipe-1, it was found that PLMA production was associated with cell Growth in the early Exponential Growth phase and dissociated from cell Growth in the late Exponential Growth phase. To enhance PMLA production in the late phase, different fermentation modes and strategies for controlling culture redox potential (CRP) were studied. The results showed that high concentrations of produced PMLA (above 40 g/l) not only inhibited PMLA production, but also was detrimental to cell Growth. Moreover, when CRP increased from 57 to 100 mV in the late Exponential Growth phase, the lack of reducing power in the broth also decreased PMLA productivity. PMLA productivity could be enhanced by repeated-batch culture to maintain cell Growth in the Exponential Growth phase, or by cell-recycle culture with membrane to remove the produced PMLA, or by maintaining CRP below 70 mV no matter which kind of fermentation mode was adopted. Repeated-batch culture afforded a high PMLA concentration (up to 63.2 g/l) with a productivity of 1.15 g l(-1) h(-1). Cell-recycle culture also confirmed that PMLA production by the strain ipe-1 was associated with cell Growth.
Yi Su - One of the best experts on this subject based on the ideXlab platform.
-
intensification of β poly l malic acid production by aureobasidium pullulans ipe 1 in the late Exponential Growth phase
Journal of Industrial Microbiology & Biotechnology, 2012Co-Authors: Juan Zhao, Changsheng Qiao, Luhui Ding, Benkun Qi, Yi SuAbstract:β-Poly(malic acid) (PMLA) has attracted industrial interest because this polyester can be used as a prodrug or for drug delivery systems. In PMLA production by Aureobasidium pullulans ipe-1, it was found that PLMA production was associated with cell Growth in the early Exponential Growth phase and dissociated from cell Growth in the late Exponential Growth phase. To enhance PMLA production in the late phase, different fermentation modes and strategies for controlling culture redox potential (CRP) were studied. The results showed that high concentrations of produced PMLA (above 40 g/l) not only inhibited PMLA production, but also was detrimental to cell Growth. Moreover, when CRP increased from 57 to 100 mV in the late Exponential Growth phase, the lack of reducing power in the broth also decreased PMLA productivity. PMLA productivity could be enhanced by repeated-batch culture to maintain cell Growth in the Exponential Growth phase, or by cell-recycle culture with membrane to remove the produced PMLA, or by maintaining CRP below 70 mV no matter which kind of fermentation mode was adopted. Repeated-batch culture afforded a high PMLA concentration (up to 63.2 g/l) with a productivity of 1.15 g l−1 h−1. Cell-recycle culture also confirmed that PMLA production by the strain ipe-1 was associated with cell Growth.
Yinhua Wan - One of the best experts on this subject based on the ideXlab platform.
-
intensification of β poly l malic acid production by aureobasidium pullulans ipe 1 in the late Exponential Growth phase
Journal of Industrial Microbiology & Biotechnology, 2012Co-Authors: Weifeng Cao, Juan Zhao, Changsheng Qiao, Luhui Ding, Jianquan Luo, Yinhua WanAbstract:beta-Poly(malic acid) (PMLA) has attracted industrial interest because this polyester can be used as a prodrug or for drug delivery systems. In PMLA production by Aureobasidium pullulans ipe-1, it was found that PLMA production was associated with cell Growth in the early Exponential Growth phase and dissociated from cell Growth in the late Exponential Growth phase. To enhance PMLA production in the late phase, different fermentation modes and strategies for controlling culture redox potential (CRP) were studied. The results showed that high concentrations of produced PMLA (above 40 g/l) not only inhibited PMLA production, but also was detrimental to cell Growth. Moreover, when CRP increased from 57 to 100 mV in the late Exponential Growth phase, the lack of reducing power in the broth also decreased PMLA productivity. PMLA productivity could be enhanced by repeated-batch culture to maintain cell Growth in the Exponential Growth phase, or by cell-recycle culture with membrane to remove the produced PMLA, or by maintaining CRP below 70 mV no matter which kind of fermentation mode was adopted. Repeated-batch culture afforded a high PMLA concentration (up to 63.2 g/l) with a productivity of 1.15 g l(-1) h(-1). Cell-recycle culture also confirmed that PMLA production by the strain ipe-1 was associated with cell Growth.
Akihiko Takahashi - One of the best experts on this subject based on the ideXlab platform.
-
anticipated backward sdes with jumps and quadratic Exponential Growth drivers
Research Papers in Economics, 2017Co-Authors: Masaaki Fujii, Akihiko TakahashiAbstract:In this paper, we study a class of Anticipated Backward Stochastic Differential Equations (ABSDE) with jumps. The solution of the ABSDE is a triple $(Y,Z,\psi)$ where $Y$ is a semimartingale, and $(Z,\psi)$ are the diffusion and jump coefficients. We allow the driver of the ABSDE to have linear Growth on the uniform norm of $Y$'s future paths, as well as quadratic and Exponential Growth on the spot values of $(Z,\psi)$, respectively. The existence of the unique solution is proved for Markovian and non-Markovian settings with different structural assumptions on the driver. In the former case, some regularities on $(Z,\psi)$ with respect to the forward process are also obtained.
-
quadratic Exponential Growth bsdes with jumps and their malliavin s differentiability
Stochastic Processes and their Applications, 2017Co-Authors: Masaaki Fujii, Akihiko TakahashiAbstract:We investigate a class of quadratic-Exponential Growth BSDEs with jumps. The quadratic structure introduced by Barrieu & El Karoui (2013) yields the universal bounds on the possible solutions. With local Lipschitz continuity and the so-called A_gamma-condition for the comparison principle to hold, we prove the existence of a unique solution under the general quadratic-Exponential structure. We have also shown that the strong convergence occurs under more general (not necessarily monotone) sequence of drivers, which is then applied to give the sufficient conditions for the Malliavin's differentiability.
-
quadratic Exponential Growth bsdes with jumps and their malliavin s differentiability
Social Science Research Network, 2017Co-Authors: Masaaki Fujii, Akihiko TakahashiAbstract:We investigate a class of quadratic-Exponential Growth BSDEs with jumps. The quadratic structure introduced by Barrieu & El Karoui (2013) yields the universal bound on the possible solutions. With a bounded terminal condition and local Lipschitz continuity, we give a simple and streamlined proof for the existence as well as the uniqueness of the solution without using the comparison principle. The properties of locally Lipschitz BSDEs with coefficients in BMO space enable us to show the strong convergence of a sequence of globally Lipschitz BSDEs to the interested one, which is then used to give sufficient conditions for the Malliavin’s differentiability.
-
quadratic Exponential Growth bsdes with jumps and their malliavin s differentiability
arXiv: Computational Finance, 2015Co-Authors: Masaaki Fujii, Akihiko TakahashiAbstract:In this paper, we study a class of quadratic-Exponential Growth BSDEs with jumps. The quadratic structure was introduced by Barrieu & El Karoui (2013) and yields a very useful universal bound on the possible solutions. With the bounded terminal condition as well as an additional local Lipschitz continuity, we give a simple and streamlined proof for the existence and the uniqueness of the solution. The universal bound and the stability result for the locally Lipschitz BSDEs with coefficients in the BMO space enable us to show the strong convergence of a sequence of globally Lipschitz BSDEs. The result is then used to generalize the existing results on the Malliavin's differentiability of the quadratic BSDEs in the diffusion setup to the quadratic-Exponential Growth BSDEs with jumps.
Changsheng Qiao - One of the best experts on this subject based on the ideXlab platform.
-
intensification of β poly l malic acid production by aureobasidium pullulans ipe 1 in the late Exponential Growth phase
Journal of Industrial Microbiology & Biotechnology, 2012Co-Authors: Juan Zhao, Changsheng Qiao, Luhui Ding, Benkun Qi, Yi SuAbstract:β-Poly(malic acid) (PMLA) has attracted industrial interest because this polyester can be used as a prodrug or for drug delivery systems. In PMLA production by Aureobasidium pullulans ipe-1, it was found that PLMA production was associated with cell Growth in the early Exponential Growth phase and dissociated from cell Growth in the late Exponential Growth phase. To enhance PMLA production in the late phase, different fermentation modes and strategies for controlling culture redox potential (CRP) were studied. The results showed that high concentrations of produced PMLA (above 40 g/l) not only inhibited PMLA production, but also was detrimental to cell Growth. Moreover, when CRP increased from 57 to 100 mV in the late Exponential Growth phase, the lack of reducing power in the broth also decreased PMLA productivity. PMLA productivity could be enhanced by repeated-batch culture to maintain cell Growth in the Exponential Growth phase, or by cell-recycle culture with membrane to remove the produced PMLA, or by maintaining CRP below 70 mV no matter which kind of fermentation mode was adopted. Repeated-batch culture afforded a high PMLA concentration (up to 63.2 g/l) with a productivity of 1.15 g l−1 h−1. Cell-recycle culture also confirmed that PMLA production by the strain ipe-1 was associated with cell Growth.
-
intensification of β poly l malic acid production by aureobasidium pullulans ipe 1 in the late Exponential Growth phase
Journal of Industrial Microbiology & Biotechnology, 2012Co-Authors: Weifeng Cao, Juan Zhao, Changsheng Qiao, Luhui Ding, Jianquan Luo, Yinhua WanAbstract:beta-Poly(malic acid) (PMLA) has attracted industrial interest because this polyester can be used as a prodrug or for drug delivery systems. In PMLA production by Aureobasidium pullulans ipe-1, it was found that PLMA production was associated with cell Growth in the early Exponential Growth phase and dissociated from cell Growth in the late Exponential Growth phase. To enhance PMLA production in the late phase, different fermentation modes and strategies for controlling culture redox potential (CRP) were studied. The results showed that high concentrations of produced PMLA (above 40 g/l) not only inhibited PMLA production, but also was detrimental to cell Growth. Moreover, when CRP increased from 57 to 100 mV in the late Exponential Growth phase, the lack of reducing power in the broth also decreased PMLA productivity. PMLA productivity could be enhanced by repeated-batch culture to maintain cell Growth in the Exponential Growth phase, or by cell-recycle culture with membrane to remove the produced PMLA, or by maintaining CRP below 70 mV no matter which kind of fermentation mode was adopted. Repeated-batch culture afforded a high PMLA concentration (up to 63.2 g/l) with a productivity of 1.15 g l(-1) h(-1). Cell-recycle culture also confirmed that PMLA production by the strain ipe-1 was associated with cell Growth.
