Results 111 to 120 of about 457,753 (313)
Electronic Journal of Differential Equations, 2002 By applying the Krasnoselskii's fixed point theorem on a suitable cone, several existence results for multiple positive solutions of a Fredholm integral equation are provided.
George L. Karakostas, P. Ch Tsamatos
doaj
Positive Solutions for Coupled Nonlinear Fractional Differential Equations
Journal of Applied Mathematics, 2014 We consider the existence of positive solutions for a coupled system of nonlinear fractional differential equations with integral boundary values. Assume the nonlinear term is superlinear in one equation and sublinear in the other equation.
Wenning Liu, Xingjie Yan, Wei Qi
doaj +1 more source
FEBS Open Bio, EarlyView.Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane +11 more
wiley +1 more source
Electronic Journal of Qualitative Theory of Differential Equations, 2016 It is well known that the linear differential equation $\dot{x}(t)+p(t)x(t-\tau (t))=0$ with continuous delay $\tau \colon \lbrack t_{0}-r,\infty )\rightarrow (0,r]$, $r>0$, $t_{0}\in \mathbb{R}$, and $p\colon \lbrack t_{0},\infty )\rightarrow (0,\infty )
George Chatzarakis +2 more
doaj +1 more source
FEBS Open Bio, EarlyView.Bioscience students were asked for their opinions on the value and teaching of skills. 204 responded that teamwork, time management and study skills are necessary to reach University, that scientific writing, research, laboratory and presentation skills are taught effectively during their studies, while other skills are gained inherently through study ...
Janella Borrell, Susan Crennell
wiley +1 more source
Existence of solutions of systems of Volterra integral equations via Brezis-Browder arguments
Electronic Journal of Differential Equations, 2011 We consider two systems of Volterra integral equations $$ u_i(t)=h_i(t) + int_{0}^{t}g_i(t,s)f_i(s,u_1(s),u_2(s),dots, u_n(s))ds, quad 1leq ileq n $$ where t is in the closed interval $[0,T]$, or in the half-open interval $[0,T)$.
Ravi P. Agarwal +2 more
doaj
Existence of positive solutions for integral boundary value problems of fractional differential equations with p-Laplacian [PDF]
, 2017 Luchao Zhang +3 more
openalex +1 more source
Why human connection is the true metric of research success
FEBS Open Bio, EarlyView.Human‐centred mentorship can be shaped by mentor attributes, actions, intrinsic drive and career ambition. Drawing on reflections across Singapore and France, as well as workshop insights from FEBS‐IUBMB ENABLE 2024, this article shows that human‐centred mentorship creates the conditions for sustainable growth, well‐being and retention in research ...
Timothy Lin Yun Tan +3 more
wiley +1 more source
Derivation and characterization of retinal pigment epithelium from urine‐derived iPSCs
FEBS Open Bio, EarlyView.Age‐related macular degeneration causes vision loss via RPE dysfunction and loss. Traditional iPSC therapies rely on invasive biopsies, limiting scalability. Here, we utilize urine‐derived stem cells as an accessible source to generate u‐iPSCs, successfully differentiated into pigmented RPE. This “Urine‐to‐Retina” platform provides a promising path for
Daniella Beiner +7 more
wiley +1 more source
Discrete Dynamics in Nature and Society, 2016 We investigate the existence and nonexistence of positive solutions for a system of nonlinear Riemann-Liouville fractional differential equations with two parameters, subject to coupled integral boundary conditions.
Johnny Henderson +2 more
doaj +1 more source