Search results for "Ferro"

Iron metabolism markers and l-arginine derivatives in coronary artery disease : highlighting, assessment and role of oxidative stress in acute myocar…

2015

Myocardial infarction (MI) is mostly caused by complications of atherosclerosis, whose the development would be initiated by a dysfunction of the vascular endothelium, characterized by an inflammatory condition and oxidative stress.In this pathogenesis, iron interacts at different levels and also has a major role in the development of endothelial dysfunction. Hepcidin and erythroferrone (discovered earlier as the myonectin/CTRP 15) participate in a major way in regulating certain stages of iron metabolism.Asymmetric dimethylarginine (ADMA), a marker of endothelial dysfunction is associated with most cardiovascular risk factors. Symmetrical dimethyl-arginine (SDMA), its stereoisomer, has an …

Chemins de fer et cheminots en tension

2018

International audience; La SNCF polarise régulièrement l'actualité économique, sociale et politique. Elle a connu en 2018 une nouvelle réforme qui l'a plongée dans plusieurs mos de crise. Plus largement, c'est l'ensemble des chemins de fer européens qui ont fait l'objet de réformes. Associant universitaires, consultats et syndicalistes, ce livre fait le point sur les évolutions récentes de ce mode de transport dans différents pays : Allemagne, Espagne, France, Italie, Royaume-Uni, Suisse. Il s'intéresse aux modalités d'ouverture à la concurrence et à leurs résultats, à l'économie et aux performances des compagnies, au devenir et aux enjeux du fret, aux statuts des personnels, au management …

Comparaison de différents plans de sondage et construction de bandes de confiance pour l'estimation de la moyenne de données fonctionnelles : une ill…

2012

Accepté pour publication dans Survey Methodology/Techniques d'Enquêtes.; Lorsque les variables étudiées sont fonctionnelles et que les capacités de stockage sont limitées ou que les coûts de transmission sont élevés, les sondages, qui permettent de sélectionner une partie des observations de la population, sont des alternatives intéressantes aux techniques de compression du signal. Notre étude est motivée, dans ce contexte fonctionnel, par l'estimation de la courbe de charge électrique moyenne sur une période d'une semaine. Nous comparons différentes stratégies d'estimation permettant de prendre en compte une information auxiliaire telle que la consommation totale de la période précédente. …

Prediction of hydraulic and acoustic properties of open-graded mixes

2014

The use of open-graded mixes increases significantly the hydraulic permeability of pavement and contributes to reduce the noise impact in comparison to traditional pavement. Such characteristics are very appealing and would greatly increase driver's safety. However, during service life, the pores tend to be clogged by many factors among them secondary traffic compaction and filling of voids by fine materials are relevant, especially on heavy routes. In this case the noise reduction and drainage capabilities will gradually disappear, causing serious problems for road safety and maintenance. In this paper we propose a simulation approach in order to predict the drainage and acoustic behavior …

Estimation of pollutant emissions from road traffic by image processing techniques. A case study in a suburban area

2013

This paper suggests a methodology based on the image processing technique able to automatically calculate the vehicle traffic and its components (light vehicles, heavy vehicles and motorcycles). The method also allows to evaluate instant vehicle speeds and, where necessary, to rebuild vehicle trajectories. Traffic data obtained through the procedure described below (capacities and speeds) can be also usefully applied to estimate pollutant emissions from vehicle traffic per year; therefore, the suggested method employs the algorithms defined with CORINAIR procedures, implemented in Copert 4 software. In order to evaluate how effective is the methodology, an experiment has been carried out in…

Super-Resolution Images Methodology Applied to UAV Datasets to Road Pavement Monitoring

2022

The increasingly widespread use of smartphones as real cameras on drones has allowed an ever-greater development of several algorithms to improve the image’s refinement. Although the latest generations of drone cameras let the user achieve high resolution images, the large number of pixels to be processed and the acquisitions from multiple lengths for stereo-view often fail to guarantee satisfactory results. In particular, high flight altitudes strongly impact the accuracy, and result in images which are undefined or blurry. This is not acceptable in the field of road pavement monitoring. In that case, the conventional algorithms used for the image resolution conversion, such as the bilinea…

CCDC 2077805: Experimental Crystal Structure Determination

2021

Related Article: Petr Vosáhlo, Léa Radal, Marine Labonde, Ivana Císařová, Julien Roger, Nadine Pirio, Jean-Cyrille Hierso, Petr Štěpnička|2021|Organometallics|40|1934|doi:10.1021/acs.organomet.1c00244

ANALISI BEFORE-AFTER CON MODELLAZIONE MULTIVARIATA

2009

Polarisation dependent Raman study of single-crystal nickel oxide

2011

Abstract The magnetic domain structure and Raman scattering have been studied in NiO single-crystals with three different (100), (110) and (111) orientations. Twin-domain structure was observed in NiO(100) and NiO(110) single-crystals using cross-polarized optical microscopy. We found that the ratio of the two-magnon (at 1500 cm−1) to the two-phonon (2LO, at 1100 cm−1) Raman bands intensity is sensitive in a particular way to the type of the twin-domain pattern.

A novel TiO2-assisted magnetic nanoparticle separator for treatment and inactivation of bacterial contaminants in aquatic systems

2014

Ferromagnetic nanoparticles (Fe-nanoparticles) have been functionalized with recombinant poly- Glu [glutamic acid]-tagged silicatein, a biomineral-synthesizing enzyme from siliceous sponges that forms the inorganic silica skeleton of those animals. The biocatalytic activity of silicatein was used to form a titania (TiO2) shell around the iron nanoparticle core, using the water-soluble non- natural substrate titanium bis(ammonium lactato)-dihydroxide (TiBALDH). Thereby the diameter of the nanoparticles increases from 7 nm to ≈22 nm. This procedure also allows the layer-by-layer fabrication of titania/silica- Fe-nanoparticles. SEM/EDX analysis confirmed the presence of the Ti and Si signals i…