Results 281 to 290 of about 3,779,631 (328)

Qualitative Analysis of a Nonautonomous Delayed Stochastic Predator-Prey Model with Beddington-DeAngelis Functional Response. [PDF]

Biology (Basel)
Jia L, Wang C.
europepmc   +1 more source

Ionic interactions of copper(ii) sulfate in water, aqueous maltose, and aqueous lactose at different temperatures: a volumetric and thermodynamic study. [PDF]

RSC Adv
Nadeem SMS, Saeed R, Ali M.
europepmc   +1 more source

Modelling the dynamically consistent numerical methods for COVID-19 disease with cost effectiveness strategies. [PDF]

Sci Rep
Li S, Abbas MA, Khan IU, Akgül A, Alkhathami AG, Hassani MK.   +5 more
europepmc   +1 more source

Dromion solutions for system of ion sound and Langmuir waves using truncated Painlevé approach. [PDF]

Sci Rep
Iqbal M, Abbas M, Nazir T, Alfwzan WF, Birhanu A, Ahmad H.   +5 more
europepmc   +1 more source

Triple Positive Solutions of Fourth-Order Four-Point Boundary Value Problems for -Laplacian Dynamic Equations on Time Scales

, 2008
Weigao Ge, Meiqiang Feng, Xiang‐Gui Li
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Development of a proposed solutions box for improving nutritional behaviors of female school students: Protocol of a mixed-method study. [PDF]

PLoS One
Mehrjoyan N, Zarei F, Ghofranipour F, Ahmadi F.   +3 more
europepmc   +1 more source

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ON POSITIVE SOLUTIONS OF ELLIPTIC EQUATIONS

Mathematics of the USSR-Sbornik, 1971
In this paper the authors study weak solutions of elliptic equations of the form in a bounded domain . It is assumed known about these solutions either that they are positive, or that estimates in certain norms hold for their negative parts. It is assumed moreover that an estimate on the -norm of the solution holds on some subdomain .
Pletneva, T. G., Eidel'man, S. D., Kondrat'ev, V. A.   +2 more
openaire   +2 more sources

The positiveness and the uniqueness of a solution

Economics Letters, 1985
Abstract This paper presents a sufficient condition which assures the positiveness and uniqueness of a solution for various economic equations and inequality systems.
Takao Fujimoto, Carmen Herrero
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POSITIVE SOLUTIONS OF NONLINEAR ELLIPTIC SYSTEMS

Mathematical Models and Methods in Applied Sciences, 1993
In this paper we prove the existence of nonnegative and non-trivial solutions of problems of the form [Formula: see text] Our main result improves many previous results of other authors and it may be applied to study the three standard situations: competition, prey-predator and cooperative models.
Cañada, A., Gámez, J. L.
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Regularity and positivity of the solution

2017
In this section we show a regularity result1 that allows us to say that a nonnegative solution to (2.1.1) is bounded.
Serena Dipierro, María Medina, Enrico Valdinoci   +2 more
openaire   +1 more source