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Kobra Mahdavipour Mahshid Khazaei Shadfar Hossein Rangani Jahromi Roberto Morandotti Rosario Lo Franco 《Entropy (Basel, Switzerland)》2022,24(3)
A witness of non-Markovianity based on the Hilbert–Schmidt speed (HSS), a special type of quantum statistical speed, has been recently introduced for low-dimensional quantum systems. Such a non-Markovianity witness is particularly useful, being easily computable since no diagonalization of the system density matrix is required. We investigate the sensitivity of this HSS-based witness to detect non-Markovianity in various high-dimensional and multipartite open quantum systems with finite Hilbert spaces. We find that the time behaviors of the HSS-based witness are always in agreement with those of quantum negativity or quantum correlation measure. These results show that the HSS-based witness is a faithful identifier of the memory effects appearing in the quantum evolution of a high-dimensional system with a finite Hilbert space. 相似文献
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Bahram Ghalami-Choobar Vahid Mahdavi Shadfar Pourpanah 《Journal of solution chemistry》2012,41(1):89-99
In this work mean activity coefficient measurements for KCl in the KCl + formamide + water system, using the potentiometric
method, are reported. The electromotive force measurements were performed on a galvanic cell of the type Ag | AgCl | KCl (m), formamide (w%), H2O (1−w)% | K-ISE, in solvent mixtures containing w=(0,10,20,30, and 40)% mass percent of formamide over ionic strengths ranging from 0.0010 to 3.9578 mol⋅kg−1. Modeling of the activity coefficients of this ternary system was based on an extended Debye–Hückel equation and the Pitzer
ion-interaction model. The resulting values of the mean activity coefficients, the osmotic coefficients and the excess Gibbs
energy, together with Pitzer ion-interaction parameters (β
(0), β
(1) and C
ϕ
) and Debye–Hückel parameters (a, c and d), are reported for the investigated system. 相似文献
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Fructose was used as an efficient catalyst for three-component condensation reactions of aryl alde-hydes, malononitrile, and dimedone in a mixture of EtOH and H2O as green solvents. The advantages of t... 相似文献
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Sayyedeh Zahra Nazemi 《Journal of Optimization Theory and Applications》2012,155(3):785-795
In this paper, we introduce and study a new class of variational inclusions in Banach spaces. As it concerns the methods of solution, we introduce a new class of monotone mappings. We define a proximal mapping associated with this mappings and show its Lipschitz continuity. By using the technique of proximal mapping, we construct a new iterative algorithm. Under some suitable conditions, we prove the convergence of iterative sequences generated by the algorithm. Our results improve and generalize many known results. 相似文献
5.
Fructose was used as an efficient catalyst for three-component condensation reactions of aryl aldehydes,malononitrile,and dimedone in a mixture of EtOH and H_2O as green solvents.The advantages of this method are a short reaction time,high yields,low cost,easy accesses,and simple work-up.The mechanism of the synthesis of a derivative of 4H-tetrahydrobenzo[b]pyran was clarified using spectroscopic kinetic methods.The activation energy(Ea=65.34 kJ/mol)and related kinetic parameters(ΔG=69.14 kJ/mol,ΔS=20.99 J/(mol·K),andΔH=62.89 kJ/mol)were calculated,based on the effects of temperature,concentration,and solvent.The first step in the proposed mechanism was identified as the rate-determining step(k1),based on the steady-state approximation. 相似文献
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