Results 91 to 100 of about 456,539 (203)

Positive almost automorphic solutions for some nonlinear delay integral equations

open access: yesElectronic Journal of Differential Equations, 2008
This paper is concerned with some nonlinear delay integral equations arising in an epidemic problem. We establish a new existence and uniqueness theorem about positive almost automorphic solutions for delay integral equations.
Wei Long, Hui-Sheng Ding
doaj  

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

Stability of positive solutions of local partial differential equations with a nonlinear integral delay term

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2008
Stability properties of positive stationary solutions to local partial differential equations with delay are studied. The results are applied to equations with not necessarily convex (concave) nonlinearities, for example, to the diffusive Nicholson's ...
Alexander Rezounenko
doaj   +1 more source

The Existence of Positive Solutions for a p-Laplacian Tempered Fractional Diffusion Equation Using the Riemann–Stieltjes Integral Boundary Condition

open access: yesMathematics
In this paper, we focus on the existence of positive solutions for a class of p-Laplacian tempered fractional diffusion equations involving a lower tempered integral operator and a Riemann–Stieltjes integral boundary condition. By introducing certain new
Lishuang Li   +3 more
doaj   +1 more source

Solutions for Integral Boundary Value Problems of Nonlinear Hadamard Fractional Differential Equations

open access: yesJournal of Function Spaces, 2018
In this paper using fixed point methods we establish some existence theorems of positive (nontrivial) solutions for integral boundary value problems of nonlinear Hadamard fractional differential equations.
Keyu Zhang, Jianguo Wang, Wenjie Ma
doaj   +1 more source

Existence of positive mild solutions for a class of fractional evolution equations on the half line

open access: yesAdvances in Difference Equations, 2017
The equivalent integral equation of a new form for a class of fractional evolution equations is obtained by the method of Laplace transform, which is different from those given in the existing literature.
Yi Chen, Zhanmei Lv, Liang Zhang
doaj   +1 more source

The method of lower and upper solutions for the general boundary value problems of fractional differential equations with p-Laplacian

open access: yesAdvances in Difference Equations, 2018
We present here a new method of lower and upper solutions for a general boundary value problem of fractional differential equations with p-Laplacian operators.
Xiping Liu, Mei Jia
doaj   +1 more source

Existence of positive solutions for singular fractional differential equations with integral boundary conditions

open access: yesElectronic Journal of Differential Equations, 2012
This article shows the existence of a positive solution for the singular fractional differential equation with integral boundary condition $$displaylines{ {}^C!D^p u(t)=lambda h(t)f(t, u(t)), quad tin(0, 1), cr u(0)-au(1)=int^1_0g_0(s)u(s),ds, cr u'
Jingfu Jin, Xiping Liu, Mei Jia
doaj  

Multiple positive solutions of some Fredholm integral equations arisen from nonlocal boundary-value problems

open access: yesElectronic Journal of Differential Equations, 2002
By applying the Krasnoselskii's fixed point theorem on a suitable cone, several existence results for multiple positive solutions of a Fredholm integral equation are provided.
George L. Karakostas, P. Ch Tsamatos
doaj  

Positive Solutions for Coupled Nonlinear Fractional Differential Equations

open access: yesJournal of Applied Mathematics, 2014
We consider the existence of positive solutions for a coupled system of nonlinear fractional differential equations with integral boundary values. Assume the nonlinear term is superlinear in one equation and sublinear in the other equation.
Wenning Liu, Xingjie Yan, Wei Qi
doaj   +1 more source

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