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Träfflista för sökning "WFRF:(Yang Yang 1985 ) srt2:(2009)"

Sökning: WFRF:(Yang Yang 1985 ) > (2009)

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1.
  • Kim, Jung Hun, et al. (författare)
  • Production of β-carotene by recombinant Escherichia coli with engineered whole mevalonate pathway in batch and fed-batch cultures
  • 2009
  • Ingår i: Biotechnology and Bioprocess Engineering. - : Springer Science and Business Media LLC. - 1226-8372 .- 1976-3816. ; 14:5, s. 559-564
  • Tidskriftsartikel (refereegranskat)abstract
    • Recombinant Escherichia coli engineered to contain the whole mevalonate pathway and foreign genes for β-carotene biosynthesis, was utilized for production of β-carotene in bioreactor cultures. Optimum culture conditions were established in batch and pH-stat fed-batch cultures to determine the optimal feeding strategy thereby improving production yield. The specific growth rate and volumetric productivity in batch cultures at 37°C were 1.7-fold and 2-fold higher, respectively, than those at 28°C. Glycerol was superior to glucose as a carbon source. Maximum β-carotene production (titer of 663 mg/L and overall volumetric productivity of 24.6 mg/L × h) resulted from the simultaneous addition of 500 g/L glycerol and 50 g/L yeast extract in pH-stat fed-batch culture.
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2.
  • Yang, Derong, 1985, et al. (författare)
  • Benefit Prediction of Passenger Car Post Impact Stability Control Based on Accident Statistics and Vehicle Dynamics Simulations
  • 2009
  • Ingår i: Proceedings of 21st IAVSD Symposium on Dynamics of Vehicles on Roads and Tracks, 2009.
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • Accident statistics showed that about 30% of passenger car accidents are multiple-impact events (MIE). Current Electronic Stability Control (ESC) systems are well designed for vehicle yaw motion control due to aggressive driving maneuvers, but not for that under external disturbances on the car body. A post impact stability control (PISC) system is thus envisioned to avoid or mitigate the subsequent events after the first PISC-triggering impact. In this work, a method for the benefit prediction of passenger car PISC system is formulated, based on accident statistics and vehicle dynamics simulations. The representative accident cases are selected; the problematic areas in terms of post impact vehicle dynamics are analyzed; thus the benefit measures are determined for each case, taking the accident environmental factors into account. PISC benefit is predicted by quantifications on each benefit measure, using a PISC function that selects between two controllers, i.e. Differential Braking and Lock Front Axle.
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