Results 101 to 110 of about 36,323 (288)

Existence of positive solutions in the superlinear case via coincidence degree: the Neumann and the periodic boundary value problems [PDF]

open access: yes, 2015
We prove the existence of positive periodic solutions for the second order nonlinear equation u'' + a(x) g(u) = 0, where g(u) has superlinear growth at zero and at infinity. The weight function a(x) is allowed to change its sign. Necessary and sufficient
Zanolin, Fabio, Feltrin, Guglielmo
core  

Homoclinic solutions for n-dimensional p-Laplacian neutral differential systems with a time-varying delay

open access: yesAdvances in Difference Equations, 2018
In this paper, we investigate the existence of a set with 2kT $2kT$-periodic solutions for n-dimensional p-Laplacian neutral differential systems with a time-varying delay (φp(u(t)−Cu(t−τ))′)′+ddt∇F(u(t))+G(u(t−γ(t)))=ek(t) $(\varphi_{p}(u(t)-Cu(t-\tau ))
Fang Gao, Wenbin Chen
doaj   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb   +6 more
wiley   +1 more source

Boundary value problem for a coupled system of fractional differential equations with p-Laplacian operator at resonance

open access: yesElectronic Journal of Differential Equations, 2014
In this article, we discuss the existence of solutions to boundary-value problems for a coupled system of fractional differential equations with p-Laplacian operator at resonance. We prove the existence of solutions when $\dim \ker L\geq 2$, using the
Lingling Cheng, Wenbin Liu, Qingqing Ye
doaj  

Correlation between clinical diagnostics and necropsical findings

open access: yesArchivo Médico de Camagüey, 2020
Background: the indices of discrepancy and coincidence of the causes of death between the clinical and morphological diagnosis constitute, indirectly, an indicator of the quality of medical care. Objective: to determine the relationship between clinical
Alberto José Piamo-Morales   +5 more
doaj  

Dirac–Bergmann analysis and degrees of freedom of coincident f(Q)-gravity

open access: yesThe European Physical Journal C
AbstractWe investigate the propagating degrees of freedom off(Q)-gravity in a 4-dimensional space-time under the imposition of the coincident gauge by performing the Dirac–Bergmann analysis. In this work, we start with a top-down reconstruction of the metric-affine gauge theory of gravity based only on the concept of a vector bundle.
Kyosuke Tomonari, Sebastian Bahamonde
openaire   +3 more sources

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

Structure and dimension of global branches of solutions to multiparameter nonlinear equations [PDF]

open access: yes, 1985
A general study of the dimension and connectivity properties of branches of solutions of equations depending on n-parameters are studied using the homotopy properties of 0-epi ...
Pejsachowicz, Jacobo   +6 more
core  

Coincidence matrix for E. coli Lsr system LMNAST stringent search hits. [PDF]

open access: yes, 2012
This coincidence matrix depicts the subset of hits with a mean element homology >0.3 and also containing 4–6 gene characters. This subset was chosen for its intermediate degree of homology to the query Lsr system.
David N. Quan (142171)   +1 more
core   +1 more source

Periodic solutions for p-Laplacian functional differential equations with two deviating arguments

open access: yesElectronic Journal of Differential Equations, 2011
Using the theory of coincidence degree, we prove the existence of periodic solutions for the p-Laplacian functional differential equations with deviating arguments.
Changxiu Song, Xuejun Gao
doaj  

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