Results 31 to 40 of about 17,173,630 (326)

Methodological design support for new-generation airship gas-air system

open access: yesAdvanced Engineering Research, 2015
The research subject is a design process of gas-air system (GAS) of multi-purpose, transport, and high-altitude (including stratospheric) airships.
Alexander Nikolayevich Kirilin   +1 more
doaj   +1 more source

On the statistical mechanics of an adiabatic ensemble

open access: yesCondensed Matter Physics, 2004
Different descriptions of an adiabatic process based on statistical thermodynamics and statistical mechanics are discussed. Equality of the so-called adiabatic and isolated susceptibilities and its generalization as well as adiabatic invariants are ...
S.N.Andreev, A.A.Rukhadze, A.A.Samokhin
doaj   +1 more source

Exploring non-adiabaticity to CO reduction reaction through ab initio molecular dynamics simulation

open access: yesAPL Materials, 2020
Non-adiabatic chemical reaction refers to the electronic excitation during reactions. This effect cannot be modeled by the ground-state Born–Oppenheimer molecular dynamics (BO-MD), where the electronic structure is at the ground state for every step of ...
Fan Zheng, Lin-wang Wang
doaj   +1 more source

Stable adiabatic quantum batteries. [PDF]

open access: yesPhysical Review E, 2019
With the advent of quantum technologies comes the requirement of building quantum components able to store energy to be used whenever necessary, i.e., quantum batteries. In this paper we exploit an adiabatic protocol to ensure a stable charged state of a
Alan C. Santos   +3 more
semanticscholar   +1 more source

Effect of adiabatic heating on microstructure evolution in Ti-6Al-4V during high strain rate forging [PDF]

open access: yesMATEC Web of Conferences, 2020
The effect of adiabatic heating on microstructure evolution during high strain rate subtransus forging of a Ti-6Al-4V alloy having equiaxed initial microstructure was studied through experiments and modelling.
Kulakov Mykola   +2 more
doaj   +1 more source

Geometrical formulation of adiabatic pumping as a heat engine [PDF]

open access: yes, 2020
We investigate a heat engine under an adiabatic (Thouless) pumping process. In this process, the extracted work and lower bound on dissipated availability are characterized by a vector potential and a Riemannian metric, respectively.
Y. Hino, H. Hayakawa
semanticscholar   +1 more source

Adiabatic theorem revisited: The unexpectedly good performance of adiabatic passage [PDF]

open access: yesPhysical Review A, 2020
Adiabatic passage employs a slowly varying time-dependent Hamiltonian to control the evolution of a quantum system along the Hamiltonian eigenstates.
A. Benseny, K. Mølmer
semanticscholar   +1 more source

Second Law Violation By Magneto-Caloric Effect Adiabatic Phase Transition of Type I Superconductive Particles

open access: yesEntropy, 2004
: The nature of the thermodynamic behavior of Type I superconductor particles, having a cross section less than the Ginzburg-Landau temperature dependent coherence length is discussed for magnetic field induced adiabatic phase transitions from the ...
Peter Keefe
doaj   +1 more source

Natural convection of rectangular cavity enhanced by obstacle and fin to simulate phase change material melting process using Lattice Boltzmann method

open access: yesAlexandria Engineering Journal, 2023
In recent years, the lattice Boltzmann method has become a powerful method for computational modeling of various complex fluid flow concerns, including the simulation of the melting process in phase change materials.
Gongxing Yan   +6 more
doaj  

Symmetric Rydberg controlled- Z gates with adiabatic pulses [PDF]

open access: yes, 2019
We analyze neutral atom Rydberg $C_Z$ gates based on adiabatic pulses applied symmetrically to both atoms. Analysis with smooth pulse shapes and Cs atom parameters predicts the gates can create Bell states with fidelity ${\mathcal F}>0.999$ using ...
M. Saffman   +4 more
semanticscholar   +1 more source

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