We study a limit cycle of quantum Otto engine whose every consists two finite-time isochoric (heating or cooling) processes and adiabatic work-extracting processes. Considering two-level system as working substance that weakly interacts with reservoirs comprising an infinite number bosons, we investigate the non-Markovian effect [short-time behavior reduced dynamics in (QIPs)] on work extractio...

No AccessTechnical NotesSwirl–Nozzle Interaction Experiments: Influence of Injection-Reservoir Pressure and Injection TimeLionel Hirschberg, Friedrich Bake, Karsten Knobloch Steven J. HulshoffLionel Hirschberg https://orcid.org/0000-0002-2732-6639German Aerospace Center, 10623 Berlin, Germany*Deutsches Zentrum für Luft- und Raumfahrt–Deutscher Akademischer Austauschdienst Postdoctoral Fellow, I...

The approach to equilibrium of a nondegenerate quantum system involves the damping of microscopic population oscillations, and, additionally, the bringing about of detailed balance, i.e. the achievement of the correct Boltzmann factors relating the populations. These two are separate effects of interaction with a reservoir. One stems from the randomization of phases and the other from phase spa...

This paper aimed to determine the effects of a pulse signal near-fault ground motion on dynamic response gravity dams, including dam-reservoir-foundation interaction, using different reservoir modelling approaches such as Westergaard, Lagrange, and Euler. As case study, Sarıyar concrete dam located Sakarya River, 120 km northeast Ankara, was considered for investigating ground-motion responses....

Abstract: Aim Investigating whether wild fish accept residual ration from cage farming to the point of changing their diet and fish-food interaction network. Methods The species, Astyanax lacustris, Iheringichthys labrosus, Leporinus amblyrhynchus, Schizodon nasutus Steindachnerina insculpta, bred in Chavantes Reservoir, Upper Paraná basin, was evaluated. Samples were collected on a monthly bas...

arch dams are generally built in cantilvever monoliths. vertical contraction joints between monoliths control the stresses due to concrete shrinkage and temperature variations. past studies in earthquake safety evaluation of the system often show the tensile fracture and local nonlinear deformation of joints. in this paper, some nonlinear joint element constitutive models are presented to exami...