Academic literature on the topic 'Particules (physique) – Propriétés physico-chimiques'
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Journal articles on the topic "Particules (physique) – Propriétés physico-chimiques"
Weber, Samuel, Jean-Luc Jaffrezo, and Gaëlle Uzu. "Comment mieux appréhender l'exposition à la pollution atmosphérique ?" La Météorologie, no. 118 (2022): 036. http://dx.doi.org/10.37053/lameteorologie-2022-0059.
Full textHouma, F., R. Belkessa, A. Khouider, N. Bachari, and Z. Derriche. "Étude corrélative des paramètres physico-chimiques et des données satellites IRS1C pour caractériser la pollution aquatique. Application à la baie d’Oran, Algérie." Revue des sciences de l'eau 17, no. 4 (April 12, 2005): 429–46. http://dx.doi.org/10.7202/705541ar.
Full textMechiah, Fahima, Imane Boutelba, and Noria Smail-Saadoun. "Vertical distribution and interannual variability of Glomeromycota of Atlas pistachio soils (Laghouat, Algeria) / Distribution verticale et variabilité interannuelle des Glomeromycota des sols sous pistachier de l’Atlas (Laghouat, Algérie)." Ecologia mediterranea 48, no. 1 (2022): 21–31. http://dx.doi.org/10.3406/ecmed.2022.2138.
Full textNabeneza, Serge, Vincent Porphyre, and Fabrice Davrieux. "Caractérisation des miels de l’océan Indien par spectrométrie proche infrarouge : étude de faisabilité." Revue d’élevage et de médecine vétérinaire des pays tropicaux 67, no. 3 (June 27, 2015): 130. http://dx.doi.org/10.19182/remvt.10181.
Full textAllard, Michel, and Maurice K.-Seguin. "Le pergélisol au Québec nordique : bilan et perspectives." Géographie physique et Quaternaire 41, no. 1 (December 18, 2007): 141–52. http://dx.doi.org/10.7202/032671ar.
Full textJoseph, A. A., and A. H. Fagbami. "Coronaviruses: a review of their properties and diversity." African Journal of Clinical and Experimental Microbiology 21, no. 4 (August 25, 2020): 258–71. http://dx.doi.org/10.4314/ajcem.v21i4.2.
Full textBodjrènou, René, Rodrigue Daassi, Bernard Ahamidé, Diane Germain, Tatjana Stevanovic, Damase Khasa, and Guillaume Amadji. "Impacts des amendements organiques sur les caractéristiques physico-chimiques d’un sol ferrallitique du Sud-Bénin." Tropicultura, 2022. http://dx.doi.org/10.25518/2295-8010.2115.
Full textDissertations / Theses on the topic "Particules (physique) – Propriétés physico-chimiques"
Debout, Vincent. "Contribution à l'étude des propriétés optiques de dépôts plasma de zircone yttriée : influences de leurs caractéristiques microstructurales et physico-chimiques." Limoges, 2007. https://aurore.unilim.fr/theses/nxfile/default/1a29b06b-3f60-4c9e-9bdc-a2b544854d39/blobholder:0/2007LIMO4017.pdf.
Full textThe aim of this PhD work is to investigate the correlations between the microstructure and the physico-chemical (oxygen under-stoichiometry) characteristics of Yttria-Stabilized Zirconia (YSZ) plasma-sprayed coatings and their optical properties (reflectance, transmittance). Six coatings with significant microstructural differences have been manufactured. A preliminary investigation of in-flight particle characteristics has been performed to select the spray conditions by using two complementary particle diagnostic tools: the DPV2000 system and a particle collection device. This latter has been designed in order to study, by using a digital analysis method on particles cross section observations, the melting state of particles at their impact onto the substrate. Two criteria have been used: the shape factor and the internal pore features (size and ratio). The resulting microstructures of coatings differ both in the content, size and shape of pores but also in the oxygen under-stoichiometry of YSZ material due to the oxygen loss during the plasma spraying. Both hemispherical transmittance and reflectance spectra of the coatings have been measured over the 0. 25-20 µm wavelength range. The investigation of the under-stoichiometry effects has been performed by annealing as-sprayed coatings in air at 500 °C with increasing times (5 minutes to 24 hours) and exploring, at each step, the variation of optical properties. The annealing results in a decrease in the absorption of the matrix which follows up with an increase of the volume scattering over 0. 5-5 µm. After a 24-hours annealing, no variation is observed and the microstructural effects can be studied. Two approaches have been implemented: a macroscopic one using the Gouesbet-Maheu model and a microscopic one based on the Mie theory in an absorbing host matrix. The submicron-sized pores play a key role in the high level of diffusion over the 0. 5-1. 5 µm range while the slow decrease in scattering over the 1. 5-5 µm range seems to be caused by the micron-sized pores
Peillon, Samuel. "Influence des effets électrostatiques liés à la radioactivité sur les forces d’adhésion et sur la mise en suspension de particules métalliques." Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS400.
Full textThe mobility and containment of radioactive dust produced by plasma/wall interactions taking place in the heart of a tokamak have become, over the years, major topics for the safety assessment of the ITER installation. To address these safety issues, I adopted complementary approaches based on experimental and numerical work. A sampling campaign carried out in the tokamak WEST (CEA/IRFM) made it possible to identify tungsten particles of spherical shape and micrometric size. An in-depth parametric study of the adhesion forces acting between these particles and tungsten surfaces was performed using an atomic force microscope (AFM). The results of this study are in very good agreement with an analytical model describing the adhesion forces as a function of particle size and surface roughness. I continued the study by performing measurements of the electric potential of particles when they are labeled with tritium using Kelvin Probe Microscopy (KPFM). The sensitivity of this technique allowed me to demonstrate a difference in surface potential between neutral particles and particles marked with tritium. Finally, resuspension experiments with tungsten particles loaded with tritium were carried out. The results of these experiments, combined with the validation of a particle resuspension model, provide robust data for dust management, safety analyzes and the definition of radiation protection plans for future nuclear fusion facilities
Kerbadou, Farid. "Mise en forme et propriétés physico-chimiques de fenêtres PbF2 pour l'optique infrarouge." Montpellier 2, 1987. http://www.theses.fr/1987MON20119.
Full textSeyni, Abdoulaye. "Propriétés physico-chimiques et d'usage de matériaux composites à charge dégradable produits par co-broyage." Phd thesis, Toulouse, INPT, 2008. http://oatao.univ-toulouse.fr/7820/1/seyni.pdf.
Full textJorda, Jérémy. "Étude du procédé d'extraction alcaline et de purification des pectines de pulpe de betterave : étude des propriétés chimiques et physico-chimiques." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT011G.
Full textGrari, Olfa. "Amélioration des propriétés physico-chimiques et anticorrosives du revêtement de polypyrrole électrodéposé sur l'acier inoxydable 304." Thesis, Besançon, 2015. http://www.theses.fr/2015BESA2041/document.
Full textThe aim of this work is to electrochemically elaborate polypyrrole films on 304 stainless steel in phosphoric acid solution and improve corrosion resistance by the use of high frequency ultrasound (US), incorporation of inorganic inhibitor (KNO3) and silica (SiO2) particles. The inorganic inhibitor reduced the oxidation potential of pyrrole monomers and was incorporated into polymer matrix. Ultrasound favors electrochemical polymerization reaction by improving mass transfer towards the electrode. It leads to films more compact, presenting a thinner and more homogeneous topography. PPy-SiO2 composite films were prepared by different methods. Good particles distribution within polymer matrix was achieved through multilayered method. All formed films: PPy-NO3-, PPy-US and PPy-SiO2 offer better protection of stainless steel against corrosion in chloride environment than PPy coatings
Bescond, Alexandre. "Contribution à la métrologie des nanoparticules de suie et à la caractérisation des particules produites par un générateur de référence." Rouen, 2015. http://www.theses.fr/2015ROUES063.
Full textIn the context of the civil aviation impact on the environment, the French aerospace and environment thematic network (called RTAE) of the French council for civil aeronautics research (CORAC) launched a study on contrails formation. The environmental impact of the induced cirrus generated by air traffic in altitude was also analyzed. The project in which this thesis is carried out (MERMOSE project, financed by the French general council of civil aviation) aims to characterize the particles emitted by an aeronautic engine and to study the soot reactivity with water. First of all, the work presented in this manuscript contributes to the improvement of the metrology of aerosol produced by combustion (soot). Furthermore, tools are designed and implemented to accurately characterize the nanoparticles produced by a reference aerosol combustion generator (miniCAST 5201c) and by an aircraft engine. Significant metrology means have been used to characterize the morphological, physico-chemical and optical properties of soot nanoparticles. Besides the use of standard commercial devices (SMPS sizer, mass concentration TEOM, Transmission Electronic Microscopy TEM …), optical techniques have also been used (depolarization of light, extinction spectra). The coupling of those techniques leads, for example, to the determination of the effective density or to the determination of optical properties. The exploitation of the obtained results has been carried out by using theories, modelling or methods that have been proposed (modelling of the effective density, automatized processing of TEM images) or improved (theory of light interaction with aggregates RDG-FA with the taking into account of internal multiple scattering). Accordingly, these new findings intend to improve the accuracy of the previously developed techniques. For example, the impact of accounting for a realistic morphology of aggregates (overlapping and necking between primary particles) has been studied. The use of the aforementioned techniques or methods permitted to reach key parameters such as the size distribution of primary particles, the fractal dimension of aggregates, the bulk density of primary spheres and their optical properties, opening the way to an optical speciation of soot nanoparticles by their organic compounds content and microstructure (amorphous or graphitic). The miniCAST generator allows to produce soot nanoparticles with a great stability and repeatability with various morphological and physico-chemical (and by the way optical) properties. This generator can be used as a surrogate of soot generated by different sources
Bouzziri, Miloudi. "Adhérence et propriétés physico-chimiques des couches de phosphate sur aciers et aciers revêtus de zinc." Lyon 1, 1994. http://www.theses.fr/1994LYO10201.
Full textCaro, Dominique De. "Synthèse et caractérisations physico-chimiques de petites particules métalliques en solution organique. Etude de leurs propriétés optiques et magnétiques." Toulouse 3, 1995. http://www.theses.fr/1995TOU30231.
Full textMessaoudi, Sabri. "Modélisation des propriétés structurales et physico-chimiques de cations vanadium solvatés et de composés vanadophosphates." Rennes 1, 2004. http://www.theses.fr/2004REN10089.
Full textBooks on the topic "Particules (physique) – Propriétés physico-chimiques"
Ontario. Esquisse de cours 12e année: Sciences de l'activité physique pse4u cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Technologie de l'information en affaires btx4e cours préemploi. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Études informatiques ics4m cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Mathématiques de la technologie au collège mct4c cours précollégial. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Sciences snc4m cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: English eae4e cours préemploi. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Le Canada et le monde: une analyse géographique cgw4u cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Environnement et gestion des ressources cgr4e cours préemploi. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Histoire de l'Occident et du monde chy4c cours précollégial. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Géographie mondiale: le milieu humain cgu4u cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Find full textBook chapters on the topic "Particules (physique) – Propriétés physico-chimiques"
"1 Propriétés physico-chimiques des surfaces." In Physique et ingénierie des surfaces, 9–40. EDP Sciences, 1998. http://dx.doi.org/10.1051/978-2-7598-0244-9.c003.
Full textLEHUÉDÉ, Patrice. "Généralités." In Le plomb dans les matériaux vitreux du patrimoine, 9–24. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9076.ch1.
Full textColomban, Philippe. "Nano-optique, céramiques et verres nano-structurés, des pratiques millénaires." In Regards croisés: quand les sciences archéologiques rencontrent l'innovation, 99–122. Editions des archives contemporaines, 2017. http://dx.doi.org/10.17184/eac.3792.
Full textRIGNEAULT, Hervé, and Julien DUBOISSET. "Imagerie Raman cohérente." In Spectroscopies vibrationnelles, 273–88. Editions des archives contemporaines, 2020. http://dx.doi.org/10.17184/eac.4204.
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