[PDF] Top 20 Evaluación del método activo para determinar contenidos de humedad de suelos

... parabolic reaction-diffusion system with a nonlinear absorption term, meanwhile the two equations of the system coupled via nonlinear boundary flux which obey ... See full document

... The nonlinear Neumann boundary conditions can be physically interpreted as the cross-boundary fluxes, which obey different laws; some may obey power laws [, , , ], some may follow exponential ... See full document

... distinguish simultaneous and non-simultaneous quenching coincide with the problem ...the simultaneous and non- simultaneous quenching is the same with the problem ...which ... See full document

... some blow- up results of scalar problems, and using them to prove Theorems ...both simultaneous and non-simultaneous blow-ups, Theo- rems ...that non-simultaneous ... See full document

... the blow-up time if blow-up occurs, or else t ∗ = ∞. It is well known that the functions f and g may greatly affect the behavior of the solution u(x, t) with the development of time. From the ... See full document

... the blow-up singularity of a semilinear parabolic equation with nonlinear memory both in the reaction term and the boundary ...a blow-up solution and a global ...the ... See full document

... blows up (we denote this phenomenon as nonsimultaneous blowup), and for others both components blowup ...the simultaneous and nonsimultane- ous blowups by the parameters p i j ... See full document

... Local in time existence of positive classical solutions of (1.1) can be obtained by using fixed point theorem [21], the representation formula and the contraction map- ping principle as in [13]. By the above comparison ... See full document

... on blow-up behavior of the solutions to parabolic problems under Dirichlet, Neumann, and Robin boundary condi- tions are present in [] and [] (see also ... See full document

... subject to the homogeneous Dirichlet boundary condition. By using the comparison prin- ciple and constructing a self-similar lower solution, they obtained sufficient conditions for global existence and ... See full document

... This paper deals with the critical parameter equations for a degenerate parabolic system coupled via nonlinear boundary flux. By constructing the self-similar supersolution and ... See full document

... and blow-up property of solutions to an initial and boundary value problem for a nonlinear parabolic system with variable exponents is ...the blow-up property of solutions ... See full document

... Remark . The conclusion of Theorem covers the results of [5-13]. Moreover, this article provides the necessary and sufficient conditions to the global existence and the blow-up of solutions in the general ... See full document

... the blow-up rate, which is not precisely ...that simultaneous and non-simultaneous blow-up occur for a diffusion system with weighted localized sources, but they did ... See full document

... for system of heat equations, coupled by nonlinear boundary ...and simultaneous and non-simultaneous ...of nonlinear parabolic ... See full document

... In next, we employ a method used by Kaplan in [] to obtain a condition, which leads to blow-up at some finite time and also leads to an upper bound for the blow-up time. In Section , we ... See full document

... to non-linear coupled one dimension reaction diffusion system, which includes the existence and uniqueness of the time dependent solution with upper and lower bounds of the ... See full document

... the reaction–diffusion equation with nonlinear absorption and nonlinear nonlocal Neumann boundary ...blows up in finite time depending on the initial data, the weighting function ... See full document

... The main purpose of this paper is to study the influence of nonlinear power exponents on the existence and nonexistence of global solutions of 1.1–1.3. By using upper- and lower- solution methods, we obtain the ... See full document

... smooth boundary ∂ ...the blow-up solution, an upper bound for the ‘blow-up time’, an upper estimate of the ‘blow-up rate’, sufficient conditions for the existence of global ... See full document