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Träfflista för sökning "WFRF:(Braun A.) srt2:(2000-2004)"

Search: WFRF:(Braun A.) > (2000-2004)

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  • Seppet, E. K., et al. (author)
  • Functional complexes of mitochondria with MgATPase of myofibrils and sarcoplasmic reticulum in muscle cells
  • 2001
  • In: Biochimica et Biophysica Acta - Bioenergetics. - Amsterdam : Elsevier. - 0005-2728 .- 1879-2650. ; 1504:2-3, s. 379-395
  • Journal article (peer-reviewed)abstract
    • Regulation of mitochondrial respiration in situ in the muscle cells was studied by using fully permeabilized muscle fibers and cardiomyocytes. The results show that the kinetics of regulation of mitochondrial respiration in situ by exogenous ADP are very different from the kinetics of its regulation by endogenous ADP. In cardiac and m. soleus fibers apparent Km for exogenous ADP in regulation of respiration was equal to 300–400 µM. However, when ADP production was initiated by intracellular ATPase reactions, the ADP concentration in the medium leveled off at about 40 µM when about 70% of maximal rate of respiration was achieved. Respiration rate maintained by intracellular ATPases was suppressed about 20–30% during exogenous trapping of ADP with excess pyruvate kinase (PK, 20 IU/ml) and phosphoenolpyruvate (PEP, 5 mM). ADP flux via the external PK+PEP system was decreased by half by activation of mitochondrial oxidative phosphorylation. Creatine (20 mM) further activated the respiration in the presence of PK+PEP. It is concluded that in oxidative muscle cells mitochondria behave as if they were incorporated into functional complexes with adjacent ADP producing systems – with the MgATPases in myofibrils and Ca,MgATPases of sarcoplasmic reticulum.
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  • Stenman, Anders, et al. (author)
  • Model-on-Demand Identification for Control : An Experimental Study and Feasibility Analysis for MOD-Based Predictive Control
  • 2000
  • In: Proceedings of the 12th IFAC Symposium on System Identification. - Linköping : Linköping University Electronic Press. - 9780080435459 ; , s. 439-444
  • Conference paper (peer-reviewed)abstract
    • An experimental study of "Model-on-Demand" (MoD) identification is made on a pilot-scale brine-water mixing tank. MoD estimation is compared against semi-physical modeling techniques using identification data generated from a systematically designed m-level Pseudo Random Sequence (PRS) input. The estimated models are the basis for evaluating the usefulness of MoD-based Model Predictive Control (MPC). For this application, MoD-MPC is shown to provide better performance at high bandwidths compared to a linear MPC controller.
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  • Result 1-6 of 6

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