Academic literature on the topic 'Retrait de particules nanométriques'
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Journal articles on the topic "Retrait de particules nanométriques"
Audignon-Durand, S., C. Gaboriau, S. Ducamp, M. Rinaldo, A. Lacourt, and P. Brochard. "Matrice emplois-expositions aux particules nanométriques non intentionnelles." Revue d'Épidémiologie et de Santé Publique 61 (October 2013): S326. http://dx.doi.org/10.1016/j.respe.2013.07.415.
Full textGaley, Louis, Sabyne Audignon-Durand, Patrick Brochard, Olivier Witschger, and Alain Garrigou. "Évaluation des expositions professionnelles aux particules nanométriques – projet ExproPNano." Archives des Maladies Professionnelles et de l'Environnement 77, no. 3 (June 2016): 429. http://dx.doi.org/10.1016/j.admp.2016.03.176.
Full textAudignon-Durand, Sabyne, Mounia El Yamani, Cindy Pellegrin, Valérie Conte, Gilles Palmer, and Patrick Brochard. "Ev@lutil : description des expositions professionnelles aux particules nanométriques non intentionnelles." Archives des Maladies Professionnelles et de l'Environnement 79, no. 3 (May 2018): 385–86. http://dx.doi.org/10.1016/j.admp.2018.03.383.
Full textLacourt, Aude, Celine Gramond, Sabyne Audignon, Patrick Brochard, and Isabelle Baldi. "Association entre exposition professionnelle aux particules nanométriques et survenue de tumeurs du système nerveux central." Archives des Maladies Professionnelles et de l'Environnement 77, no. 3 (June 2016): 497. http://dx.doi.org/10.1016/j.admp.2016.03.328.
Full textManangama, Guyguy, Lucile Migault, Sabyne Audignon-Durand, Céline Gramond, Cécile Zaros, Ghislaine Bouvier, Patrick Brochard, Loic Sentilhes, Aude Lacourt, and Fleur Delva. "Description des expositions professionnelles maternelles aux particules nanométriques non intentionnelles au cours de la grossesse." Archives des Maladies Professionnelles et de l'Environnement 79, no. 3 (May 2018): 302. http://dx.doi.org/10.1016/j.admp.2018.03.233.
Full textLacourt, Aude, Céline Gramond, Sabyne Audignon, Isabelle Stücker, Isabelle Baldi, and Patrick Brochard. "Association entre exposition professionnelle aux particules nanométriques et survenue de cancer : du poumon au système nerveux central." Archives des Maladies Professionnelles et de l'Environnement 78, no. 5 (October 2017): 471–72. http://dx.doi.org/10.1016/j.admp.2017.07.009.
Full textBecquemin, M. H., J. F. Bertholon, M. Attoui, D. Ledur, F. Roy, M. Roy, and B. Dautzenberg. "Rétention dans les voies aériennes des particules nanométriques de l’aérosol de la fumée de cigarette au cours du tabagisme passif." Revue des Maladies Respiratoires 27, no. 5 (May 2010): 441–48. http://dx.doi.org/10.1016/j.rmr.2010.03.010.
Full textPerrot-Sipple, Frédérique, Daniel Aymes, Jean-Claude Niepce, and Pascal Perriat. "Synthèse de poudres nanométriques de titanate de strontium par émulsion stabilisée mécaniquement: maîtrise et prédiction de la taille des particules." Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry 2, no. 7-8 (July 1999): 379–85. http://dx.doi.org/10.1016/s1387-1609(00)88549-7.
Full textRichard, Pierre J. H., Jean J. Veillette, Alayn C. Larouche, Bernard Hétu, James T. Gray, and Pierre Gangloff. "Chronologie de la déglaciation en Gaspésie : nouvelles données et implications." Géographie physique et Quaternaire 51, no. 2 (November 30, 2007): 163–84. http://dx.doi.org/10.7202/033116ar.
Full textSaulnier-Talbot, Émilie, and Reinard Pienitz. "Isolation au postglaciaire d'un bassin côtier près de Kuujjuaraapik-Whapmagoostui, en Hudsonie (Québec) : une analyse biostratigraphique diatomifère." Géographie physique et Quaternaire 55, no. 1 (October 2, 2002): 63–74. http://dx.doi.org/10.7202/005662ar.
Full textDissertations / Theses on the topic "Retrait de particules nanométriques"
Mercadier, Thomas. "Retrait particulaire par étalement et retrait d’un film de résine." Electronic Thesis or Diss., Université Grenoble Alpes, 2023. http://www.theses.fr/2023GRALT095.
Full textEfficient particle contamination removal is crucial in maximizing yield within the microelectronics industry. However, conventional particle removal techniques may become impractical when dealing with complex and fragile surface structures, as their application can potentially cause physical damage. This challenge has led to the development of new cleaning processes based on innovative concepts, such as a resist film lift off approach. The resist film lift-off leads to the particle removal due to the particle surface bonded to the resist. One of these particle removal processes is studied in this manuscript. In this process, the resist film is composed of two immiscible organic polymers. The process consists of the resist spin-coating followed by a diluted ammonia dispense at room temperature. Thanks to the latter chemical step, one of the polymers is dissolved inducing the delamination and lift-off of the remaining polymer with drag and lift forces.This manuscript sheds light on the critical role of the organization of two immiscible polymers within the resist film in the context of film lift-off. The organization of these polymers was shown to depend on the substrate surface energy through Tof SIMS analysis. For instance, on a hydrophilic substrate, the soluble polymer exhibits a pronounced affinity for the interface. Such an organization on hydrophilic surface minimizes the interfacial area that needs to be delaminated during the resist removal step. Consequently, the effectiveness of ammonia-based film removal relies on the substrate’s surface energy and is only achievable if the substrate surface energy is below 66mN/m.This manuscript provides valuable insights into the modification of the polymers’ organization. The tuning of some parameters from the resist formulation as the blend ratio or the resist thickness and the addition of a bake after the coating are shown to modify this surface energy peeling limit. Additionally, a Particle Removal Efficiency study was conducted on blanket wafers to determine and understand how these three parameters influence cleaning efficiency. It has led to the optimization of process efficiency. This optimized process efficiency was evaluated on structured surfaces. The results showcased its capability to efficiently remove particles while preserving the integrity of delicate structures.This PhD project has contributed to broadening the comprehension of particle removal using a resist peeling process. Moreover, it has demonstrated the potential application of this method in an industrial context
Khettabi, Riad. "Modélisation des émissions de particules microniques et nanométriques en usinage." Mémoire, École de technologie supérieure, 2009. http://espace.etsmtl.ca/59/1/KHETTABI_Riad.pdf.
Full textSchreuders, Cornelis. "Synthèse par plasma inductif de particules nanométriques de silicium : optimisation de la trempe." Limoges, 2006. http://aurore.unilim.fr/theses/nxfile/default/eaa5dec8-f4a4-4245-9423-2e6d8d1337a5/blobholder:0/2006LIMO0029.pdf.
Full textAn important step in the synthesis of nanoparticles by means of an inductively coupled plasma (ICP) process is quenching, which is the fast controlled cooling of the plasma gas. As quenching is influencing the temperature and velocity profiles, it is also affecting the particle size, size distribution, and phase composition of the product. In this work, the effect of several quench parameters, like nozzle number, nozzle diameter, quench gas flow rate, etc. , on the final particle size has been investigated both theoretically and experimentally. The influence of the quench and other process parameters (plate power, pressure, gas flow rates, …) on the plasma’s temperature and velocity profiles has been modelled using CFD and validated with experimental results. The particle size was modelled using a particle growth model and has been compared to results obtained from experiments with silicon. The effect of quenching on the product chemistry has been demonstrated for tungsten carbide
Escot, Bocanegra Pablo. "Études expérimentales et modélisation de la combustion des nuages de particules micrométriques et nanométriques d'aluminium." Phd thesis, Université d'Orléans, 2007. http://tel.archives-ouvertes.fr/tel-00347592.
Full textL'objectif de ce travail a été de caractériser expérimentalement la combustion dans l'air d'un nuage de particules d'aluminium micrométrique et nanométrique pour de fortes richesses dans les conditions normales de température et de pression. Un outil de simulation numérique a été élaboré sur cette base expérimentale. Pour répondre aux besoins de l'étude, un dispositif expérimental spécifique a été développé et de multiples techniques d'analyse ont été utilisées afin de comprendre les mécanismes physiques mis en jeu lors de la combustion des particules d'aluminium. Il en ressort que la vitesse de flamme augmente avec la concentration et que pour la même concentration globale, la combustion se propage plus rapidement dans les nuages de nanoparticules que dans les nuages de microparticules. Les températures de la phase gazeuse et de la phase condensée pour le nuage de particules nanométriques sont inférieures à celles du nuage de particules micrométriques. L'élaboration d'un modèle à partir des paramètres expérimentaux permet d'obtenir des temps de combustion qui concordent avec l'expérience. Deux lois en D 0,25 et D 0,49 peuvent être estimées en considérant des particules nanométriques non agglutinées.
Escot, Bocanegra Pablo. "Etudes expérimentales et modélisation de la combustion des nuages de particules micrométriques et nanométriques d'aluminium." Orléans, 2007. http://www.theses.fr/2007ORLE2079.
Full textXiong, Tiantian. "Biodisponibilité des métaux et métalloïdes de particules micro- et nanométriques en relation avec leur phytotoxicité." Thesis, Toulouse, INPT, 2015. http://www.theses.fr/2015INPT0081/document.
Full textUltrafine particles including nanosized enriched with metal(loid)s (PM) are emitted into the atmosphere of industrial or urban areas, these PM can transfer into soil and water ecosystems and have consequences on plant quality and human health. In a global socio-scientific context that regulation on (eco)toxicity of chemicals and public space pressures are recently increased, studies of environmental and health impacts throughout the life cycle of PM are of crucial sanitary concern. The PhD aims first to study metal(loid)s present in the PM: their transfer kinetic and mechanism of phytoavailability, phytotoxicity, and human health risks-ingestion bioaccessibility. Then, through the case of vegetable gardens near an incinerator and a highway in China, a socio-scientific study was performed in order to give suggestions for sustainable environmental and health risk management for these sites. Vegetables can significantly accumulate metal(loid)s by foliar uptake when PM directly enter into leaves through stomata apertures. Ultrafine PbO and nano-CuO particles caused serious phytotoxicity (reduced biomass and gaseous exchange, and necrosis) after interaction with leaf surface. Phytotoxicity of metal(loid)s is not simply governed by their total concentration, but also depended on the potential bio-transformation. Electron paramagnetic resonance (EPR) analysis clearly evidenced copper speciation change in leaf tissues. Moreover, a significant influence of the nature of metal, plant species and the exposure pathways (foliar/root) on gastro-bioaccessibility of metal(loid)s had been demonstrated. For a social-scientific study near waste incinerator and roadside, we found that atmosphere PM fallouts can induce significant metal foliar uptake in addition to soil-plant transfer. The relatively high human bioaccessibility of metal (60-79%) was measured, suggesting a potential health risk in the case of regular consumption of polluted vegetables. Vegetable gardens present a low (waste incinerator) or moderate (highway) health risk with respect to human consumption quantity of the investigated vegetables, but exposure to different organic pollutants in addition to metals is often possible. Our studies highlight the importance of taking atmosphere and soil quality into account for estimating the quality of consumed plants grown in anthropic areas (farms and kitchen gardens), and for sustainable management of urban agricultures
Roussel, Manuel. "Etude et modélisation de la précipitation de particules de silicium dans des couches de silice nanométriques." Phd thesis, Rouen, 2012. http://www.theses.fr/2012ROUES043.
Full textRoussel, Manuel. "Etude et modélisation de la précipitation de particules de silicium dans des couches de silice nanométriques." Phd thesis, Université de Rouen, 2012. http://tel.archives-ouvertes.fr/tel-00782200.
Full textLallet, François. "Etudes numériques et expérimentales de systèmes auto-organisés à différentes échelles: exemples d'îlots YSZ nanométriques et de particules de diamant micrométriques." Phd thesis, Université de Limoges, 2008. http://tel.archives-ouvertes.fr/tel-00323911.
Full textLa deuxième partie introduit un modèle physique à l'échelle nanométrique couplé à un algorithme Monte-Carlo classique pour simuler la mise en îlots, au cours d'un traitement thermique, de films minces synthétisés par voie sol-gel. Cette partie complète l'étude précédente en justifiant la plus grande stabilité de l'interface (3) vis à vis des interfaces (1) et (2) sur un substrat rugueux. Nous proposons ensuite une démarche de simulation analogue et un modèle décrivant les processus de formation d'îlots pour des couches synthétisées par des procédés de type PVD-CVD illustrés par le système {Ge||Si}.
Finalement, un modèle physique et un algorithme de dynamique moléculaire classique sont associés pour simuler l'auto-organisation de particules de diamant micrométriques immergées dans un film liquide horizontal en évaporation sur un substrat. Les particules sont soumises à des forces capillaires attractives et des forces de friction avec le substrat qui est plan ou rayé. L'expérience démontre une agglomération préférentielle des particules sur les zones de forte rugosité d'un substrat rayé; le modèle démontre l'importance des frottements dans l'interprétation de ce phénomène.
Lallet, François. "Eudes numériques et expérimentales de systèmes auto-organisés à différentes échelles : exemples d'îlots YSZ nanométriques et de particules de diamant micrométriques." Limoges, 2008. https://aurore.unilim.fr/theses/nxfile/default/e5f5f286-7eb4-4302-9040-cffeb5de3823/blobholder:0/2008LIMO4006.pdf.
Full textIn a first part, we focus on the {YSZ||(0001)α-Al2O3} {flayer||substrateg} system synthesized via sol-gel route for which thermal treatments induce the formation of top-at epitaxial nanometric YSZ islands (interfaces (1) and (2) ; at substrate) or rounded (interface (3) ; rough substrate). We propose a physical model at the atomic scale and ab initio computations in order to quantify and compare their corresponding interface energies. The second part introduces a physical model at the nanometric scale and a classical Monte-Carlo algorithm to describe the islanding process, during thermal treatment, of thin solid films synthesized by sol-gel process. This part highlight the previous study because we demonstrate the higher stability of interface (3) with regard to interfaces (1) and (2) on a rough susbtrate. Then we describe, through an analogous strategy, the formation of islands for thin solid films synthesized by PVD-CVD processes illustrated by the {Ge||Si} system. Finally, a physical model and a classical molecular dynamic algorithm are introduced to simulate the self-organisation process of micrometric diamond particules embedded in a liquid film dried horizontally on an substrate. The particles are submitted to lateral attractive capillary forces and friction forces with a substrate either at or indented. Experiments demonstrate a much more efficient aggregation on the rough parts of an indented substrate. The model demonstrates how critical are the friction forces in the interpretation of this phenomena
Book chapters on the topic "Retrait de particules nanométriques"
Colomban, 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.
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