Results 31 to 40 of about 14,818 (266)

Theoretical Analysis on a Diffusive SIS Epidemic Model with Logistic Source, Saturated Incidence Rate and Spontaneous Infection Mechanism

Mathematics
In this paper, we study a diffusive SIS epidemic model with a logistic source, saturation rate, and spontaneous infection mechanism. Based on the uniform bounds of parabolic system, the global attractivity of the endemic equilibrium is established in a ...
Hongmin Zhang, Jian Zhang, Xin Huo
doaj   +1 more source

Dark matter effect on the weak deflection angle by black holes at the center of Milky Way and M87 galaxies

European Physical Journal C: Particles and Fields, 2022
In this paper, we investigated the effect of dark matter on the weak deflection angle by black holes at the galactic center. We consider three known dark matter density profiles such as the Cold Dark Matter, Scalar Field Dark Matter, and the Universal ...
Reggie C. Pantig, Ali Övgün
doaj   +1 more source

Asymptotic profiles of solutions to viscous Hamilton–Jacobi equations

Journal de Mathématiques Pures et Appliquées, 2004
The large time behavior of solutions to Cauchy problem for viscous Hamilton-Jacobi equation is classified. The large time asymptotics are given by very singular self-similar solutions on one hand and by self-similar viscosity solutions on the other ...
Benachour, Said, Karch, Grzegorz, Laurençot, Philippe   +2 more
openaire   +3 more sources

Existence and asymptotic stability of relaxation discrete shock profiles [PDF]

Mathematics of Computation, 2004
The author studies the asymptotic nonlinear stability of discrete shocks by means of the relaxation schemes for one-dimensional systems of hyperbolic conservation laws. The existence of discrete shocks is proven. Further, it is proven that weak single discrete shocks are nonlinearly stable in \(L^2\). The results are obtained by using the weighted norm
openaire   +1 more source

Flows for chosen vorticity functions—exact solutions of the Navier-Stokes equations

International Journal of Mathematics and Mathematical Sciences, 1994
Solutions are obtained for the equations of the motion of the steady incompressible viscous planar generalized Beltrami flows when the vorticity distribution is given by ∇2ψ=ψ+f(x,y) for three chosen forms of f(x,y).
O. P. Chandna, E. O. Oku-Ukpong
doaj   +1 more source

Asymptotic profiles for the Kirchhoff equation

Rendiconti Lincei, Matematica e Applicazioni, 2006
The first aim of this paper is to find asymptotic profiles for Kirchhoff equation. More precisely, it will be shown that there exists a small amplitude solution which is not asymptotically free. The second aim is to prove the existence of scattering states for the small amplitude solutions with data belonging to
openaire   +3 more sources

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

A note on existence of patterns on surfaces of revolution with nonlinear flux on the boundary

Electronic Journal of Qualitative Theory of Differential Equations, 2019
In this note we address the question of existence of non-constant stable stationary solution to the heat equation on surfaces of revolution subject to nonlinear boundary flux involving a positive parameter.
Maicon Sônego
doaj   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

Transformation of an irregular wave field along a quartic bottom profile; pp. 155–160 [PDF]

Proceedings of the Estonian Academy of Sciences, 2013
Random wave transformation in the basin of decreasing depth is studied for the case of a quartic bottom profile. The advantage of this bottom profile is that waves can propagate along it without inner reflection even if the bottom slope is not small ...
Ira Didenkulova, Efim Pelinovsky
doaj   +1 more source