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A passive system is one that cannot produce energy, a property that naturally poses constraints on the system. In this paper there is a review of some results on linear, time translational invariant, continuous, causal and passive systems, where it turns out that Herglotz functions are related to the Fourier transform of the impulse response of such systems. Some well known facts of this function
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During oxidative phosphorylation, the production of ATP is driven by the activity of several proton-pumping respiratory protein complexes. In plants, non-proton pumping type II NAD(P)H dehydrogenases are also present in the respiratory chain to oxidize cytosolic and matrix NAD(P)H. So far, it has not been fully clear what roles these enzymes play in the cellular metabolism. In Arabidopsis thalia
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This thesis investigates electronic transport in several types of novel heterostructure nanowires. The first part of the thesis focuses on band-to-band mechanisms in heterostructure nanowires for low-power electronics. First, tunnel field-effect transistors (TFETs) based on InP/GaAs heterostructure nanowires with n-i-p doping profile are explored. To further enhance the interband tunneling current
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A model for corrosion crack nucleation and growth is presented, where the corrosion forms the geometry of the crack tip, thus creating the conditions for strain concentration. The interaction between electro chemical processes and the deformation of the crack tip region is incorporated in a continuum mechanical theory. No crack growth criterion is used. The formation of a crack from a surface depr