Results 11 to 20 of about 1,704,518 (313)

Biomarkers of Cellular Stress Do Not Associate with sCD14 in Progressive HIV and SIV Infections in Vivo

open access: yesPathogens and Immunity, 2020
Background: Microbial translocation occurs after damage to the structural and/or immunological barrier of the gastrointestinal (GI) tract into circulation.
Carol L. Vinton   +8 more
doaj   +1 more source

Tight junction channel regulation by interclaudin interference

open access: yesNature Communications, 2022
Tight junctions are formed by claudin proteins that can be classified as pore- or barrier-forming. Here, Shashikanth et al. report a third function, termed interclaudin interference, in which one claudin inhibits pore function of another claudin by ...
Nitesh Shashikanth   +7 more
doaj   +1 more source

Human ES-derived MSCs correct TNF-α-mediated alterations in a blood–brain barrier model

open access: yesFluids and Barriers of the CNS, 2019
Background Immune cell trafficking into the CNS is considered to contribute to pathogenesis in MS and its animal model, EAE. Disruption of the blood–brain barrier (BBB) is a hallmark of these pathologies and a potential target of therapeutics.
Shujun Ge   +5 more
doaj   +1 more source

Energy recovery in a commercial building using pico-hydropower turbines: An Australian case study

open access: yesHeliyon, 2023
Optimising energy use in systems and buildings is crucial to reduce climate change. This paper aims to address the gap in knowledge for pico-hydropower (
Sascha Thyer, Tony White
doaj   +1 more source

Permeability Barrier and Microstructure of Skin Lipid Membrane Models of Impaired Glucosylceramide Processing

open access: yesScientific Reports, 2017
Ceramide (Cer) release from glucosylceramides (GlcCer) is critical for the formation of the skin permeability barrier. Changes in β-glucocerebrosidase (GlcCer’ase) activity lead to diminished Cer, GlcCer accumulation and structural defects in SC lipid ...
Michaela Sochorová   +5 more
doaj   +1 more source

Les exemples dans l’élaboration des démonstrations mathématiques : une approche sémantique et dialogique

open access: yesRecherches en Éducation, 2016
This paper addresses the roles of examples when dealing with mathematical proof in higher education. I use the distinction between semantic and syntactic approaches to get a first insight.
Thomas Barrier
doaj   +1 more source

Barriers to Entry: Abolishing the Barriers to Understanding [PDF]

open access: yesJournal of Public Finance and Public Choice, 2009
The concept of a barrier to entry has been discussed least since Bain [1956] with important contributions by Spence [1977], Dixit [1980] and Milgrom - Roberts [1982]. The more recent discussion is synthesized in the contributions to a dedicated session at the 2004 AEA meeting. Yet, a ‘barrier to entry’ remains a surprisingly elusive concept, which even
openaire   +1 more source

Why Barriers to Entry Are Barriers to Understanding [PDF]

open access: yesAmerican Economic Review, 2004
This paper discusses and criticizes the usual definitions of barriers to entry. The failure of the concept of barrier to entry to incorporate a time dimension means that it is a concept that is in need of additional embellishment in order to be useful in a practical problem or for antitrust or regulatory proceedings.
openaire   +2 more sources

Enquête de l’IEA sur le niveau en lecture - II

open access: yesRevue Internationale d’Éducation de Sèvres, 1994
Dans cet article, l’auteur présente et analyse l’enquête sur la lecture réalisée par l’IEA en 1991, en commentant plus particulièrement les résultats concernant la France et l’influence des stratégies des maîtres en CM1.
Émilie Barrier
doaj   +1 more source

RETRACTED ARTICLE: Secretome of endothelial progenitor cells from stroke patients promotes endothelial barrier tightness and protects against hypoxia-induced vascular leakage

open access: yesStem Cell Research & Therapy, 2021
Background Cell-based therapeutic strategies have been proposed as an alternative for brain repair after stroke, but their clinical application has been hampered by potential adverse effects in the long term.
Rodrigo Azevedo Loiola   +14 more
doaj   +1 more source

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