Results 71 to 80 of about 15,510,191 (369)
Positive solutions for a class of singular boundary-value problems
Electronic Journal of Differential Equations, 2006 This paper concerns the existence and multiplicity of positive solutions for Sturm-Liouville boundary-value problems. We use fixed point theorems and the sub-super solutions method to two solutions to the problem studied.
Dang Dinh Hai
doaj
Boundedness character of a max-type system of difference equations of second order
Electronic Journal of Qualitative Theory of Differential Equations, 2014 The boundedness character of positive solutions of the next max-type system of difference equations $$x_{n+1}=\max\left\{A,\frac{y_n^p}{x_{n-1}^q}\right\},\quad y_{n+1}=\max\left\{A,\frac{x_n^p}{y_{n-1}^q}\right\},\quad n\in\mathbb{N}_0,$$ with $\min\{A,
Stevo Stevic +3 more
doaj +1 more source
Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley +1 more source
Some results about positive solutions of a nonlinear equation with a weighted Laplacian
Boletim da Sociedade Paranaense de Matemática, 2004 We consider the problem of classification of bounded positive solutions to-abla cdot (A(|x|) abla u) = B(|x|) |u|^{q-2}u, xin R^n.Here q>2 and A,B are weight functions.
Raúl Manásevich +2 more
doaj
On positive solutions of Liouville-Gelfand problem
Вестник КазНУ. Серия математика, механика, информатика, 2018 Modern science is highly interested in processes in nonlinear media. Mathematical models of these processes are often described by boundary-value problems for nonlinear elliptic equations.
S. V. Kolosova +2 more
doaj +1 more source
Positive solutions for the one-dimensional p-Laplacian with nonlinear boundary conditions [PDF]
Opuscula Mathematica, 2019 We prove the existence of positive solutions for the \(p\)-Laplacian problem \[\begin{cases}-(r(t)\phi (u^{\prime }))^{\prime }=\lambda g(t)f(u),& t\in (0,1),\\au(0)-H_{1}(u^{\prime }(0))=0,\\cu(1)+H_{2}(u^{\prime}(1))=0,\end{cases}\] where \(\phi (s)=|s|
D. D. Hai, X. Wang
doaj +1 more source
FEBS Letters, EarlyView.In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley +1 more source
Uniqueness and existence of positive solutions for the fractional integro-differential equation
, 2017 In this paper, we study the uniqueness and existence of positive solutions for the fractional integro-differential equation with the integral boundary value problem.
Ying Wang, Lishan Liu
semanticscholar +1 more source
Social context prevents heat hormetic effects against mutagens during fish development
FEBS Letters, EarlyView.This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere +5 more
wiley +1 more source
Fractional Schrodinger-Poisson equations with general nonlinearities
Electronic Journal of Differential Equations, 2016 In this article we study the existence of positive solutions and ground state solutions for a class of fractional Schrodinger-Poisson equations in R^3 with general nonlinearity.
Ronaldo C. Duarte, Marco A. S. Souto
doaj