Results 111 to 120 of about 8,502,103 (299)

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Multiple solutions for a discrete anisotropic (p_1(k),p_2(k))-Laplacian equations

open access: yesElectronic Journal of Differential Equations, 2015
This article concerns the existence and multiplicity solutions for a discrete Dirichlet Laplacian problems. Our technical approach is based on variational methods.
El Miloud Hssini
doaj  

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Existence and multiplicity of solutions for nonhomogeneous Klein-Gordon-Maxwell equations

open access: yesElectronic Journal of Differential Equations, 2015
This article concerns the nonhomogeneous Klein-Gordon-Maxwell equation $$\displaylines{ -\Delta u+u-(2\omega +\phi)\phi u=|u|^{p-1}u +h(x), \quad\text{in }\mathbb{R}^3,\cr \Delta \phi=(\omega +\phi)u^2,\quad\text{in }\mathbb{R}^3, }$$ where ...
Liping Xu, Haibo Chen
doaj  

On some variational algebraic problems

open access: yesAdvances in Nonlinear Analysis, 2013
In this paper by exploiting critical point theory, the existence of two distinct nontrivial solutions for a nonlinear algebraic system with a parameter is established.
Molica Bisci Giovanni, Repovš Dušan
doaj   +1 more source

Convergence of the newton process to multiple solutions

open access: yesNumerische Mathematik, 1966
In 1870, E.Schroder showed that the convergence of the Newton process of successive approximations to a multiple solution of a scalar equation was geometric in character, and that quadratic convergence could be restored by multiplying the ordinary corrections by a constant.
openaire   +2 more sources

Investigating transcription factor dynamics in health and disease using FRAP

open access: yesFEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj   +3 more
wiley   +1 more source

Existence of nontrivial solutions for singular quasilinear equations with sign changing nonlinearity

open access: yesElectronic Journal of Differential Equations, 2010
By an application of Bonanno's three critical point theorem, we establish the existence of a nontrivial solution to the problem $$displaylines{ -Delta_p u= mu frac{g(x)|u|^{p-2}u}{|x|^p} +lambda a(x)f(u) quad hbox{in }Omega,cr u =0quad hbox{on ...
Jagmohan Tyagi
doaj  

Some results of perturbed double critical fractional Schrödinger–Poisson systems in R3 ${\mathbb{R}}^{3}$

open access: yesDemonstratio Mathematica
In this paper, we study the existence and multiplicity solutions for the following perturbed double critical fractional Schrödinger–Poisson Systems in R3 ${\mathbb{R}}^{3}$ :
He Xian, Liang Sihua
doaj   +1 more source

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