Results 51 to 60 of about 1,794,477 (278)
Exact solution for a fermion in the background of a scalar inversely linear potential
, 2004 The problem of a fermion subject to a general scalar potential in a two-dimensional world is mapped into a Sturm-Liouville problem for nonzero eigenenergies. The searching for possible bounded solutions is done in the circumstance of power-law potentials.
't Hooft +27 more
core +1 more source
Lower and Upper Solutions for Singular Derivative Dependent Dirichlet Problem [PDF]
Mathematical Inequalities & Applications, 2001 The author develops the lower and upper solution method to work out the Dirichlet problem \[ u''+f(t,u,u')=0,\quad u(a)=0,\;u(b)=0, \] where \(f\) can be singular for \(t=a\), \(t=b\) and \(u=0\). Solutions are supposed to be in \(W^{1,1}(a,b)\cap W^{2,1}_{loc}(a,b)\).
openaire +1 more source
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
A method of upper and lower solutions for functional differential inclusions [PDF]
International Journal of Stochastic Analysis, 2002 In this paper, a fixed point theorem for condensing maps combined with upper and lower solutions are used to investigate the existence of solutions for first order functional differential inclusions.
Benchohra, Mouffak, Ntouyas, Sotiris K.
openaire +2 more sources
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Existence of traveling wavefronts for integrodifference equations with bilateral exponential kernel
Electronic Journal of Differential Equations, 2016 In this article, we study the existence of traveling wavefronts for integrodifference equation with a bilateral exponential kernel, namely, the Laplacian kernel.
Huaqin Peng, Zhiming Guo, Zizi Wang
doaj
Solvability of a boundary value problem with a Nagumo Condition
Journal of Taibah University for Science, 2018 The aim of this paper is to discuss the existence and localization of solutions for a generalized Emden-Fowler equation involving a conformable derivative and with a Dirichlet boundary condition.
R. Khaldi, A. Guezane-Lakoud
doaj +1 more source
Weighted k-Server Bounds via Combinatorial Dichotomies
, 2017 The weighted $k$-server problem is a natural generalization of the $k$-server problem where each server has a different weight. We consider the problem on uniform metrics, which corresponds to a natural generalization of paging.
Bansal, Nikhil +2 more
core +2 more sources
Upper–lower solutions for nonlinear parabolic systems and their applications
Journal of Mathematical Analysis and Applications, 2011 A method of upper and lower-solutions for nonlinear time-dependent reaction-diffusion systems of the type \[ \begin{cases} {\partial \over {\partial t}} u_i(x,t) - d_i \Delta u_i(x,t)= f_i(u_1,\dots,u_m, x) \quad \text{ for } x\in \Omega \subset \mathbb R^m \\ \alpha_i u_i(x,t) + \beta_i {\partial \over \partial n} u_i(x,t) = \psi_i(u_1,\dots,u_{i-1 ...
Abudiab, Mufid, Ahn, Inkyung, Li, Lige
openaire +2 more sources
FEBS Letters, EarlyView.In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai +9 more
wiley +1 more source