Results 11 to 20 of about 5,519,972 (105)

On Solvability of the Damped Fučík Type Problem with Integral Condition [PDF]

open access: yesMathematical Modelling and Analysis, 2014
The solvability results are established for the boundary value problem with a damping term , x(0) = 0, where x + = max{x, 0}, x - = max{-x, 0}, h is a bounded nonlinearity, µ, λ real parameters.
Natalija Sergejeva
doaj   +2 more sources

Fučík spectra for vector equations [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2000
Let $L:\hbox{dom} L\subset L^2(\Omega;R^N)\rightarrow L^2(\Omega;R^N)$ be a linear operator, $\Omega$ being open and bounded in $R^M$. The aim of this paper is to study the Fu\v c\'\i k spectrum for vector problems of the form $Lu=\alpha Au^+ -\beta Au^-$
Christian Fabry
doaj   +3 more sources

On Fučík type spectrum for problem with integral nonlocal boundary condition

open access: yesNonlinear Analysis, 2019
The Fučík equation x' '= -μ x+λ x- with two types of nonlocal boundary value conditions are considered. The Fučík type spectrum for both problems are constructed. The visualization of the spectrum for some values of parameter γ is provided.
Natalija Sergejeva, Sigita Pečiulytė
doaj   +2 more sources

On the Fredholm Alternative for the Fučík Spectrum

open access: yesAbstract and Applied Analysis, Volume 2010, Issue 1, 2010., 2010
We consider resonance problems for the one‐dimensional p‐Laplacian assuming Dirichlet boundary conditions. In particular, we consider resonance problems associated with the first three curves of the Fučík Spectrum. Using variational arguments based on linking theorems, we prove sufficient conditions for the existence of at least one solution.
Pavel Drábek   +2 more
wiley   +2 more sources

Evaluation of carbonification of coals using a portable Raman spectrometer

open access: yesJournal of Raman Spectroscopy, Volume 54, Issue 11, Page 1220-1232, November 2023., 2023
This study illustrates that it is possible to discriminate among the coals of different degrees of maturation of the carbonaceous matter and other types of carbonaceous matter using the data acquired with a portable Raman spectrometer using spectroscopic parameters: D and G band widths and wavenumber positions.
Adam Culka   +2 more
wiley   +1 more source

Ultra wide‐field infrared astronomy in Antarctica

open access: yesAstronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023
The science enabled by the deep and high‐cadence survey that will be performed by the Vera Rubin Observatory has led to an increase of survey and follow‐up capabilities around the world. The infrared, has however, not match this growth due to the challenges caused by the atmospheric and the cost of large detector arrays.
Tony Travouillon   +6 more
wiley   +1 more source

Multi‐level metabolic engineering of Escherichia coli for high‐titer biosynthesis of 2′‐fucosyllactose and 3‐fucosyllactose

open access: yesMicrobial Biotechnology, Volume 15, Issue 12, Page 2970-2981, December 2022., 2022
An engineered Escherichia coli was developed for high‐titer FL biosynthesis by introducing multi‐level metabolic engineering strategies. Combined with the optimization of metabolic pathways and the performance improvement of rate‐limiting enzymes, 64.62 g/L of 2 '‐FL and 40.68 g/L of 3‐FL were finally obtained in the 3‐L bioreactors.
Mengli Li   +5 more
wiley   +1 more source

Notes on the Fučík spectrum and the mixed boundary value problem [PDF]

open access: yes, 2007
summary:The paper is devoted to the study of the properties of the Fučík spectrum. In the first part, we analyse the Fučík spectra of the problems with one second order ordinary differential equation with Dirichlet, Neumann and mixed boundary conditions ...
Massa, Eugenio   +4 more
core   +1 more source

The Effect of Dynamic Capillarity in Modeling Saturation Overshoot during Infiltration

open access: yesVadose Zone Journal, Volume 18, Issue 1, Page 1-14, 2019., 2019
Core Ideas We provide detailed analysis of various forms of the dynamic capillarity coefficient. We focus on the region of saturation overshoot at larger saturation. The results are evaluated with the aid of experimental observations. Gravity‐driven fingering has been observed during downward infiltration of water into dry sand.
Luwen Zhuang   +2 more
wiley   +1 more source

Multiplicity in parameter‐dependent problems for ordinary differential equations

open access: yesMathematical Modelling and Analysis, 2009
We consider two types of nonlinear boundary value problems involving parameters. The second type of problems includes the Fučík problem. Properties of spectra are discussed in connection with the number of solutions to BVP.
Felix Sadyrbaev
doaj   +1 more source

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