Results 51 to 60 of about 6,200,707 (327)

Abelian networks III: The critical group [PDF]

open access: yesJournal of Algebraic Combinatorics, 2015
The critical group of an abelian network is a finite abelian group that governs the behavior of the network on large inputs. It generalizes the sandpile group of a graph. We show that the critical group of an irreducible abelian network acts freely and transitively on recurrent states of the network.
Benjamin Bond, Lionel Levine
openaire   +2 more sources

Interaction vesicles as emerging mediators of host‐pathogen molecular crosstalk and their implications for infection dynamics

open access: yesFEBS Letters, EarlyView.
Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke   +2 more
wiley   +1 more source

On the critical pair theory in abelian groups : Beyond Chowla's Theorem

open access: yes, 2007
We obtain critical pair theorems for subsets S and T of an abelian group such that |S+T| < |S|+|T|+1. We generalize some results of Chowla, Vosper, Kemperman and a more recent result due to Rodseth and one of the authors.Comment: Submitted to ...
A. L. Cauchy   +23 more
core   +4 more sources

Existence and multiplicity for a superlinear elliptic problem under a non-quadradicity condition at infinity

open access: yesElectronic Journal of Differential Equations, 2020
In this article, we study the existence and multiplicity of solutions of the boundary-value problem $$\displaylines{ -\Delta u = f(x,u), \quad \text{in } \Omega, \cr u = 0, \quad \text{on } \partial\Omega, }$$ where $\Delta$ denotes the N ...
Leandro Recova, Adolfo Rumbos
doaj  

Mothers’ groups during critical processes around birth

open access: yesPsicodebate, 2016
The article describes a clinical experience with groups of mothers of newborns who are ill and must stay in neonatology. This report tries to reflect on single session therapy within support-groups and also on psychologist ́s role when coping with ...
Alicia Mercado
doaj   +1 more source

Autophagy in cancer and protein conformational disorders

open access: yesFEBS Letters, EarlyView.
Autophagy plays a crucial role in numerous biological processes, including protein and organelle quality control, development, immunity, and metabolism. Hence, dysregulation or mutations in autophagy‐related genes have been implicated in a wide range of human diseases.
Sergio Attanasio
wiley   +1 more source

Algebraic Properties of Generalized Graph Laplacians: Resistor Networks, Critical Groups, and Homological Algebra

open access: yes, 2017
We propose an algebraic framework for generalized graph Laplacians which unifies the study of resistor networks, the critical group, and the eigenvalues of the Laplacian and adjacency matrices.
Dana, Will   +4 more
core   +1 more source

SURVEY ON SOLIDARITY GROUPS OF BUYERS: CRITICAL ISSUES

open access: yesItalian Journal of Food Safety, 2011
This work is intended to provide, through the analysis of the dynamics of purchase of solidarity groups of buyers, a contribution to the study of current trends that are affecting the alternative to the dominant agro-food industry.
L. Pennisi   +3 more
doaj   +1 more source

On the critical group of matrices

open access: yes, 2010
18 pages, 5 ...
Corrales, Hugo, Valencia, Carlos E.
openaire   +2 more sources

Protonophore activity of short‐chain fatty acids induces their intracellular accumulation and acidification

open access: yesFEBS Letters, EarlyView.
The protonated form of butyrate, as well as other short‐chain fatty acids (SCFAs), is membrane permeable. In acidic extracellular environments, this can lead to intracellular accumulation of SCFAs and cytosolic acidification. This phenomenon will be particularly relevant in acidic environments such as the large intestine or tumor microenvironments ...
Muwei Jiang   +2 more
wiley   +1 more source

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