Results 1 to 10 of about 1,211,113 (146)

A generalized Fucik type eigenvalue problem for p-Laplacian [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2009
In this paper we study the generalized Fucik type eigenvalue for the boundary value problem of one dimensional $p-$Laplace type differential equations \[ \left\{\begin{array}{lll} - (\varphi( u')) ' = \psi(u), \quad -T< x < T; \\ \quad u(-T)=0, \quad u ...
Yuanji Cheng
doaj   +5 more sources

Sign-Changing Solutions for Nonlinear Elliptic Problems Depending on Parameters

open access: yesInternational Journal of Differential Equations, 2010
The study of multiple solutions for quasilinear elliptic problems under Dirichlet or nonlinear Neumann type boundary conditions has received much attention over the last decades.
Siegfried Carl, Dumitru Motreanu
doaj   +7 more sources

On the Fredholm Alternative for the Fučík Spectrum

open access: yesAbstract and Applied Analysis, 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.
Pavel Drábek, Stephen B. Robinson
doaj   +2 more sources

Reshaping Phosphatase Substrate Preference for Controlled Biosynthesis Using a "Design-Build-Test-Learn" Framework. [PDF]

open access: yesAdv Sci (Weinh)
A design–build–test–learn (DBTL) framework for rational enzyme design is proposed to modify the substrate preference of the phosphatase BT4131. The best mutant, exhibiting significantly enhanced preference for N‐acetylglucosamine‐6‐phosphate (GlcNAc6P), is combined with a GlcNAc6P biosensor and applied to microbial cell factories, resulting in a ...
Lu J   +9 more
europepmc   +2 more sources

On the First Curve in the FučiK Spectrum with Weights for a Mixed p-Laplacian

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
We show the existence of a first curve in the Fučik spectrum with weights for the p-Laplacian under mixed boundary conditions. We also study the asymptotic behavior of this first curve.
Liamidi Leadi, Aboubacar Marcos
doaj   +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

De novo 2′‐fucosyllactose bioproduction through modular engineering of a novel Escherichia coli K12‐derived strain

open access: yesFood Bioengineering, Volume 2, Issue 2, Page 89-104, June 2023., 2023
A novel Escherichia coli K12 derivative was used as a chassis for 2′‐FL biosynthesis. Inactivation of transcriptional regulator McbR can improve 2′‐FL production. Double mutation F40S/Q237S of FutC‐J166 increased 2′‐FL titer by 1.55‐fold. Abstract The most abundant human milk oligosaccharide 2′‐fucosyllactose (2′‐FL) is a valuable component that has ...
Chunyu Ma   +4 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

On some fučík type problem with cubic nonlinearity

open access: yesMathematical Modelling and Analysis, 2011
We study the second order Fučík type problem with cubic nonlinearity  and construct the Fučík spectrum for this problem. The spectrum obtained under normalization condition (otherwise problem may have continuous spectra) structurally is similar to Fučík ...
N. Sergejeva
doaj   +1 more source

On Fučik spectra for third order equations

open access: yesMathematical Modelling and Analysis, 2007
We construct the Fučik spectrum for some third order nonlinear boundary value problems. This spectrum differs essentially from the known Fučik spectra.
Natalija Sergejeva
doaj   +1 more source

Home - About - Disclaimer - Privacy