Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Marcelo K. Lenzi"'
Publikováno v:
ACS Omega, Vol 9, Iss 23, Pp 24987-24997 (2024)
Externí odkaz:
https://doaj.org/article/9a2ed9d292734140ab5d41006eae42ae
Autor:
Derik W. Gryczak, Ervin K. Lenzi, Michely P. Rosseto, Luiz R. Evangelista, Luciano R. da Silva, Marcelo K. Lenzi, Rafael S. Zola
Publikováno v:
Fluids, Vol 9, Iss 10, p 221 (2024)
We investigate the diffusion phenomenon of particles in the vicinity of a spherical colloidal particle where particles may be adsorbed/desorbed and react on the surface of the colloidal particle. The mathematical model comprises a generalized diffusi
Externí odkaz:
https://doaj.org/article/137c6b9b95fe42a889729af649cce598
Autor:
Ervin K. Lenzi, Michely P. Rosseto, Derik W. Gryczak, Luiz R. Evangelista, Luciano R. da Silva, Marcelo K. Lenzi, Rafael S. Zola
Publikováno v:
Entropy, Vol 26, Iss 8, p 673 (2024)
We investigate the H-theorem for a class of generalized kinetic equations with fractional time-derivative, hyperbolic term, and nonlinear diffusion. When the H-theorem is satisfied, we demonstrate that different entropic forms may emerge due to the e
Externí odkaz:
https://doaj.org/article/4d40c6384f7f4645afec1753e9711825
Autor:
Enrique C. Gabrick, Paulo R. Protachevicz, Diogo L. M. Souza, José Trobia, Elaheh Sayari, Fernando S. Borges, Marcelo K. Lenzi, Iberê L. Caldas, Antonio M. Batista, Ervin K. Lenzi
Publikováno v:
Fractal and Fractional, Vol 8, Iss 3, p 143 (2024)
We investigate the transient dynamics of the Fisher equation under nonlinear diffusion and fractional operators. Firstly, we investigate the effects of the nonlinear diffusivity parameter in the integer-order Fisher equation, by considering a Gaussia
Externí odkaz:
https://doaj.org/article/84d9395598e74d24926463b9cf4157b8
Publikováno v:
Entropy, Vol 25, Iss 12, p 1578 (2023)
We study the entropy production in a fractal system composed of two subsystems, each of which is subjected to an external force. This is achieved by using the H-theorem on the nonlinear Fokker–Planck equations (NFEs) characterizing the diffusing dy
Externí odkaz:
https://doaj.org/article/d0541ac052d647838d3578ddb104d82f
Autor:
Enrique C. Gabrick, Paulo R. Protachevicz, Ervin K. Lenzi, Elaheh Sayari, José Trobia, Marcelo K. Lenzi, Fernando S. Borges, Iberê L. Caldas, Antonio M. Batista
Publikováno v:
Fractal and Fractional, Vol 7, Iss 11, p 792 (2023)
The fractional reaction–diffusion equation has been used in many real-world applications in fields such as physics, biology, and chemistry. Motivated by the huge application of fractional reaction–diffusion, we propose a numerical scheme to solve
Externí odkaz:
https://doaj.org/article/628dd3d1098347daac375107d248fa9a
Publikováno v:
Chemical Engineering Transactions, Vol 92 (2022)
Technologies and processes that minimize the dependence on petroleum products are among the most significant challenges of our time. Lignocellulosic biomass, such as sugarcane bagasse, is a promising alternative for obtaining a wide range of products
Externí odkaz:
https://doaj.org/article/6a280b989de749b48c50e9b78ee40416
Publikováno v:
Fluids, Vol 8, Iss 2, p 34 (2023)
We investigate the solutions of a generalized diffusion-like equation by considering a spatial and time fractional derivative and the presence of non-local terms, which can be related to reaction or adsorption–desorption processes. We use the Green
Externí odkaz:
https://doaj.org/article/e8bf9ae428dc437c863cd8e1ad95e9e6
Publikováno v:
Mathematics, Vol 10, Iss 3, p 389 (2022)
We investigate diffusion in three dimensions on a comb-like structure in which the particles move freely in a plane, but, out of this plane, are constrained to move only in the perpendicular direction. This model is an extension of the two-dimensiona
Externí odkaz:
https://doaj.org/article/5ac747219230488b96476d7178bb1954
Publikováno v:
Advances in Mathematical Physics, Vol 2017 (2017)
We investigate the diffusion of two different species in a semi-infinite medium considering the presence of linear reaction terms. The dynamics for these species is governed by fractional diffusion equations. We also consider the presence of an adsor
Externí odkaz:
https://doaj.org/article/6a19100b7d8646d19689d6477a9161e0