In this paper we show the lower semicontinuity of the global attractors of autonomous thermoelastic plate systems with Neumann boundary conditions when some reaction terms are concentrated in a neighborhood of the boundary and this neighborhood shrinks to boundary as a parameter ε goes to zero.

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In this paper, we study the existence and uniqueness of global solution for a Klein-Gordon equations system with mixed boundary conditions. We, also, analyze the asymptotic behavior of this solution.

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