Search results for " diffusion"

showing 10 items of 521 documents

Image Mean Square Displacement analysis: a new method to study protein diffusion in cell membranes

2017

The image mean square displacement...

advanced microscopy diffusion in cellsSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)
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EFFICIENT SOLUTION OF HETEROGENEOUS ANISOTROPIC DIFFUSION PROBLEMS

2012

anisotropic diffusion heterogeneous medium M-matrix Delaunay mesh affine transformation edge swapSettore ICAR/01 - Idraulica
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Le développement des médias sociaux. Proposition d'un modèle de diffusion intégrant les externalités de réseau dans un cadre concurrentiel

2011

International audience; La fréquentation des médias sociaux est très concentrée. L’intérêt de ce type de sites résidant dans la richesse du contenu élaboré par les participants, ce phénomène peut être en partie expliqué par les externalités de réseau. Afin de démontrer cet effet dans un cadre concurrentiel, cette recherche propose un modèle de diffusion intégrant le principe de l’attachement préférentiel issu des recherches en réseaux complexes. Ce modèle est analysé au travers d’une simulation et appliqué à 51 médias sociaux dans trois secteurs différents. Les résultats montrent que l’ajout de l’effet d’attraction menée par la taille relative du réseau social explique mieux la diffusion qu…

attachement préférentielmodèle de diffusionpreferential attachmentGeneral Computer Scienceexternalité de réseau[SHS.GESTION]Humanities and Social Sciences/Business administrationdiffusion model[ SHS.GESTION ] Humanities and Social Sciences/Business administrationnetwork externalities[SHS.GESTION] Humanities and Social Sciences/Business administrationRecherche et Applications en Marketing (French Edition)
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Indexations et diffusions internationales de Synergies Algérie, revue du Gerflint : état des lieux en 2018

2018

Toute étude prenant pour objet la revue Synergies Algérie place auteurs, chercheurs et lecteurs dans l’un des centres les plus productifs de la francophonie scientifique internationale en sciences humaines et sociales. Le nombre élevé et la diversité de ses indexations depuis sa fondation en 2007 ainsi que la qualité de la diffusion de ses articles en témoignent. À la frontière éditoriale entre le 26e numéro et le 27e , cette contribution offre un bilan de ces reconnaissances et de cette visibilité désormais inscrites dans la durée, permettant d’envisager un avenir prometteur. La d&…

bibliométrielcsh:Language and Literatureprogramme de diffusion bases de données scientifiques citation bibliométrie accès librecitationBibliometriabases de données scientifiqueslcsh:Pprogramme de diffusionaccès libre
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Antibacterial activity of different root canal sealers against Enterococcus faecalis

2017

Background The aim of the present study was to compare in vitro the antimicrobial activity of different root canal sealers against Enterococcus faecalis, prior and subsequent to setting. Material and methods Agar diffusion test (ADT) was used for evaluating the antibacterial activity of non-set sealer while the direct contact test (DCT) was used for after setting. Results ADT: Except for TotalFill BC Sealer all the others sealers tested showed antibacterial activity. BioRoot™RCS, MTA Fillapex and Sealapex Root Canal Sealer showed the lowest antibacterial activity, a significant increase in antibacterial effect for both Pulp Canal Sealer™ and AH plus sealers were found. Significantly higher …

biologybusiness.industryChemistryRoot canal0206 medical engineeringDentistry030206 dentistry02 engineering and technologybiology.organism_classificationAntimicrobial:CIENCIAS MÉDICAS [UNESCO]020601 biomedical engineeringEnterococcus faecalis03 medical and health sciences0302 clinical medicinemedicine.anatomical_structureMTA-FillapexUNESCO::CIENCIAS MÉDICASmedicinePulp canalAgar diffusion testBacterial inhibitionAntibacterial activitybusinessGeneral Dentistry
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Sport and Quality of Life

2022

Negli ultimi trent’anni lo sport ha assunto un significato molto rilevante nella vita delle persone e, seppure con notevoli differenze, sia nei paesi a sviluppo economico avanzato, sia in quelli in via di sviluppo. A livello individuale, esso ha costituito un’area di investimento identitario quando ha assunto la forma di sport spettacolo del quale fruire, alimentando la pratica del tifo e il fandom o costituendo il modello di uno stile di vita vincente; ma anche quando ha assunto la forma di pratica del tempo libero attraverso la quale tenersi in forma, facendo crescere, in questo caso, la diffusione di una cultura della salute e del benessere. Si tratta di due modalità di approcciare al co…

but also when he took the form of free time practice through which to keep fit making grow in this case the diffusion of a culture of health and well-being. These are two ways of approaching the consumption of sports by spectators and actorIn the last thirty years sport has taken on a very significant meaning in people's lives and albeit with considerable differences both in advanced economic development countries and in developing countries. On an individual level it constituted an area of identity investment when it assumed the shape of “sport spectacle” to be enjoyed fueling the practice of cheering and fandom or constituting the model of a winning lifestyleand the two ways of use can be strongly related to the perception and assessment of the quality of life. The “semantic universes” which however connote sport and “free time sports” have often appeared polarized. Commercial sport and sports professionalism are intertwined with the institutions of economics politics and culture which above all stress its “spectacularity” in order to capture first and foremost the audience. But also the sport of leisure time is intertwined with the actions of the institutions of economics politics and culture with the difference that these stress above all its “healthy value” aimed at the “healthy and rational” investment of time in an activity which improves the quality of life in the short medium and long period. This polarization between the consumption of sport entertainment - commercial sport - and the consumption of sport as a leisure activity - sport for all - has become increasingly interconnected precisely because of the increased collective identity demand via sport. In other words we have witnessed the spread of shape of sports entertainment that recall the importance of sports for psychophysical well-being for integration and social participation for the reduction of social inequalities ethnic and cultural differences and in which the importance assumed was weakened in the show from agonism from competition from the physical confrontation between two contenders or two teams. A sport in which we act with competitors as well as against competitors. And on the other hand we have gradually witnessed the spectacularization of sports in our free time to the point that the sharing of the results obtained through the declination of a competitive spirit that presents itself as directed no longer against other contenders but against its own performance limits it has become the way in which each person makes part of his or her own life spectacular the one he often considers most authentic. The aim of this work is to describe how the intertwining between the commercial/professional dimension of the sports show and the playful/recreational dimension of sports practice are fueled by a demand and an offer of social identity that characterizes these two “semantic universes”.Settore SPS/07 - Sociologia Generale
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La distribution des tuiles estampillées de la VIIIe légion Augusta autour de Mirebeau-sur-Bèze (Côte-d'Or, France)

2011

The 8th Augustan Legion was installed at Mirebeau-sur-Bèze (Côte-d'Or) after 70 AD following the troubles that arose with the Lingons. It remained there until the time of Domitian, a period of roughly twenty years, during which time the soldiers produced tiles stamped with the name of the legion. Analysis of the dispersion of the tiles in the region around Mirebeau shows that they followed the communication routes. Consideration of the contexts in which these tiles were used, their number on each site and the resources necessary to manufacture them reveals that the 8th Legion may have played a significant role in the diffusion and adoption of tiled roofs, a construction technique that was t…

camp légionnairemodèle de diffusion[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistorylegionary camparmée romainediffusion modeltechnique de constructionMirebeau-sur-Bèze (Côte-d'Orconstruction techniquetuiles estampilléesBourgogne)[ SHS.ARCHEO ] Humanities and Social Sciences/Archaeology and Prehistorystamped tilesRoman army
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Cation Diffusion and Segregation at the Interface between Samarium-Doped Ceria and LSCF or LSFCu Cathodes Investigated with X-ray Microspectroscopy

2017

The chemical compatibility between electrolytes and electrodes is an extremely important aspect governing the overall impedance of solid-oxide cells. Because these devices work at elevated temperatures, they are especially prone to cation interdiffusion between the cell components, possibly resulting in secondary insulating phases. In this work, we applied X-ray microspectroscopy to study the interface between a samarium-doped ceria (SDC) electrolyte and lanthanum ferrite cathodes (La0.4Sr0.6Fe0.8Cu0.2O3(LSFCu); La0.9Sr0.1Fe0.85Co0.15O3(LSCF)), at a submicrometric level. This technique allows to combine the information about the diffusion profiles of cations on the scale of several micromet…

cathodeMaterials scienceAbsorption spectroscopyX-ray microspectroscopychemistry.chemical_element02 engineering and technologyElectrolyteelectrolytecompatibility010402 general chemistry01 natural scienceslaw.inventioninterfaceslawsamarium-doped ceriaLanthanumGeneral Materials ScienceSOFCCation diffusionDoping021001 nanoscience & nanotechnologyXANESCathodeXANES0104 chemical sciencesceriaSamariumCeriumchemistryChemical engineeringMaterials Science (all)0210 nano-technologycathodes
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UJI AKTIVITAS ANTIBAKTERI DARI ESTRAK TUMBUHAN AKWAY (Drimys beccariana. Gibbs)

2010

<p><em>The plant Akway (Drimys beccariana.</em>Gibbs<em>) is endemic to Papua and is frequently used traditionally by the Arfak tribe as a medicinal plant. We extract the plant by maceration with ethanol. The antibacterial test  is done by Agar diffusion method. As microba test  we used Escheresia coli and Bacillus subtilis. Result obtained from fitochemistry skrinning of the leaf and bark contained alkaloid, flavonoid, steroid, tannin, glikosida, saponin, triterpenoid, steroid and  fenolik. Concentration of active substances from the leaf are flavonoid (0,3680%) and tanin (10.33 %); while from the bark flavonoid 18.35%  and tanin (27.65%).  Antibacterial test showed…

chemistry.chemical_classificationDrimysTraditional medicinebiologyfungiFlavonoidSaponinfood and beveragesBacillus subtilisbiology.organism_classificationchemistryvisual_artMaceration (wine)visual_art.visual_art_mediumTanninBarkAgar diffusion testJurnal Natural
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CATs, a family of three distinct mammalian cationic amino acid transporters

1996

Three related mammalian carrier proteins that mediate the transport of cationic amino acids through the plasma membrane have been identified in murine and human cells (CAT for cationic amino acid transporter). Models of the CAT proteins in the membrane suggest they have 12 or 14 transmembrane domains connected by short hydrophilic loops and intracellular N- and C-termini. The transport activity of the CAT proteins is sensitive to trans-stimulation and independent of the presence of sodium ions. These features agree with the behaviour of carrier proteins mediating facilitated diffusion. The three CAT proteins, CAT-1, CAT-2A and CAT-2(B) are encoded by two different genes (CAT-1 and CAT-2). C…

chemistry.chemical_classificationFacilitated diffusionOrganic ChemistryClinical BiochemistryMembrane transportBiologyBiochemistryTransport proteinAmino acidTransmembrane domainchemistryBiochemistryAmino acid transporterReceptorIntracellularAmino Acids
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