Literatura académica sobre el tema "Détecteurs de gaz – Matériaux"
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Artículos de revistas sobre el tema "Détecteurs de gaz – Matériaux"
Mouaddib-Moral, N. y C. Gauthier. "Matériaux pour la dépollution des gaz d'échappement automobile". Journal de Physique IV (Proceedings) 12, n.º 2 (abril de 2002): 3–14. http://dx.doi.org/10.1051/jp42002009.
Texto completoBoudigues, Serge. "Rôle des matériaux dans la turbine à gaz". Matériaux & Techniques 75, n.º 12 (1987): 467–70. http://dx.doi.org/10.1051/mattech/198775120467.
Texto completoBoyer, Sébastien. "Démarche de sélection des matériaux convenant aux réservoirs de gaz de pétrole liquéfiés". Matériaux & Techniques 86, n.º 5-6 (1998): 52–54. http://dx.doi.org/10.1051/mattech/199886050052.
Texto completoParlier, Yves. "Décarboner la navigation marchande : l’innovation de la traction par aile de kite". Le journal de l'école de Paris du management N° 163, n.º 5 (21 de septiembre de 2023): 31–36. http://dx.doi.org/10.3917/jepam.163.0031.
Texto completoBétis, F. "Matériaux et revêtements de composants de la veine gazeuse de turbines à gaz industrielles". Le Journal de Physique IV 10, PR4 (marzo de 2000): Pr4–15—Pr4–22. http://dx.doi.org/10.1051/jp4:2000403.
Texto completoGuéret, Samuel, Gwenaël Diélie, Frédérique Bastin, Tiriana Segato, Michel Verbanck y Pierre D’Ans. "Influence de la substitution d’argile par des déchets sédimentaires dans des briques en terre crue comprimée (BTCC) sur la résistance à l’abrasion". Matériaux & Techniques 107, n.º 3 (2019): 302. http://dx.doi.org/10.1051/mattech/2019018.
Texto completoJolly, Patricia y Nathalie Mazet. "Optimisation de la diffusion du gaz dans des matériaux réactifs, siège de transferts de chaleur, de masse et d’une réaction chimique". International Journal of Heat and Mass Transfer 42, n.º 2 (enero de 1999): 303–21. http://dx.doi.org/10.1016/s0017-9310(98)00109-4.
Texto completoCambron, Micheline. "Le discours sur la Grande Guerre". Dossier 37, n.º 2 (2 de abril de 2012): 15–33. http://dx.doi.org/10.7202/1008573ar.
Texto completoRAMANANDRAIBE, Tanteliniaina Mbolanirina, Pierre RAKOTOMAMONJY, Guy Joël ROBISONARISON y Edouard Ravalison ANDRIANARISON. "Amélioration Des Qualités Mécaniques D’une Brique De Terre Comprimée Stabilisée Au Ciment Par Trempe De Consolidation Au Silicate De Soude". International Journal of Progressive Sciences and Technologies 38, n.º 1 (30 de abril de 2023): 388. http://dx.doi.org/10.52155/ijpsat.v38.1.5195.
Texto completoHarris, Jeff R., Juan X. He, Robert Rainbird y Pouran Behnia. "A Comparison of Different Remotely Sensed Data for Classifying Bedrock Types in Canada’s Arctic: Application of the Robust Classification Method and Random Forests". Geoscience Canada 41, n.º 4 (3 de diciembre de 2014): 557. http://dx.doi.org/10.12789/geocanj.2014.41.062.
Texto completoTesis sobre el tema "Détecteurs de gaz – Matériaux"
Bouhadid, Myriam. "Conception, caractérisation et mise en œuvre de matériaux organiques conducteurs pour des applications dans le domaine des capteurs chimiques". Pau, 2008. http://tel.archives-ouvertes.fr/docs/00/41/98/89/PDF/TheseBouhadid.pdf.
Texto completoThe main objective of this project was to prepare, study and test new generation of chemical sensors based on conducting polymer composite material. All the steps concerning the feasibility of the sensors have been studied. The active layer was made of composite containing intrinsically conducting polymers as polyaniline (Pani). The synthesis of the conducting composites was optimized and obtained with an environmental friendly process (no acid nor organic solvent) at low cost and thus easy to scale up. Several composites made of polyacrylate/polyaniline were obtained, parameters as dopant chemical nature and polyaniline content were studied. To answer the fundamental questions and to reach the applications mentioned, the structure and several physico-chemical properties (composite formulation, response to gas exposure, signal treatment…) were studied in details on samples and devices that are prepared and characterized in a systematic and controlled way. The procedure to test these new sensors has been optimized in a climatic chamber previously calibrated to control the temperature, the relative humidity and the ammonia concentration parameters. Performances of the sensors were then carried out in terms of reproducibility, sensibility, reversibility, selectivity… Effects of specific conditions as humidity, temperature, and more commonly ageing study were studied and the sensor response was recorded to certify the gas sensor safe for use in hazardous location. This study demonstrated the feasibility of whole polymer (polyaniline composite) sensors to detect ammonia. Moreover, all the performances of this new chemical sensor are in line with the market needs in terms of response time, sensitivity, reproducibility. At last, these sensors introduce a breakthrough technology since their response is reversible with no need of servicing or calibration between two exposures. This feature is very interesting in terms of time-life and cost
Jouve, Christophe. "Etude de matériaux composites dans des structures : métal-composite-métal, métal-composite-semiconducteur : application aux capteurs en phase gazeuse". Lyon 1, 1993. http://www.theses.fr/1993LYO10232.
Texto completoSaoudi, Hanen. "Synthèse et caractérisation des matériaux La0,8Ca0,1Pb0,1Fe1-xCoxO3 (0,00 ≤ x ≤ 0,20) : application dans le domaine de capteurs de gaz de NH3 et CO". Electronic Thesis or Diss., Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0381.
Texto completoThis thesis deals with the elaboration and study of the effect of iron substitution by cobalt on the physical properties (structural, morphological and magnetic) and particularly the detection of the two reducing gases NH3 and CO of the compounds La0.8Ca0.1Pb0.1Fe1-xCoxO3 (x = 0.00, 0.05, 0.10, 0.15 and 0.20). The decrease of valume was subsequently confirmed by the SGGA + U approximation using the Density Functional Theory (DFT). Similarly, the morphological study reveals porous micrographs presenting aggregated and agglomerated particles of nanometric size and irregular shape. Structural and morphological analyzes predicted that the compound with x = 0.05 could be considered as a good candidate for application in the field of gas detection. The results of the electrical measurements have shown that the resistance decreases for Co rate below 0.10 and then increases with higher rate. Similarly, electrical responses under gas have shown that our compounds are able to detect gases, with a variation of the electrical resistance easily measurable following exposure under different concentrations of both gases (NH3 and CO) and to deduce that the compound La0.8Ca0.1Pb0.1Fe0.95Co0.05O3 (x = 0.05) presents the best response towards the two tested gases
Cailleaux, Xavier. "Élaboration, caractérisation structurale et mesures électriques de matériaux oxynitrures semiconducteurs pour application comme capteurs chimiques de gaz". Rennes 1, 2008. http://www.theses.fr/2008REN1S178.
Texto completoGallium nitride (GaN), gallium oxynitride (GaON) and zinc and germanium oxynitride (ZnGeON) have been prepared by ammonolysis of various oxides precursors : commercial powder and precursors prepared by soft chemistry process or solid state reaction. These (oxy)nitride semiconductors have been prepared and then characterized. A comparative structural study has been carried out on GaN and GaON using XRD and Raman spectroscopy to determine GaON crystallographic structure. We found that GaON prepared from nickel gallate NiGa₂O₄ crystalises in a carborundum II structure (6H-SiC). Dip coating technology has been studied as an alternative to screen printing technology, and allowed the preparation of ZnGeON based chemical sensors. Dip coated ZnGeON sensors of 35 µm thickness have been studied for detection of carbon monoxide and carbon dioxide at a concentration of 100 ppm. Electrical characterizations showed that ZnGeON sensors have interesting detection properties, especially in the case of carbon monoxide where we observed a very high sensitivity between 150 and 200°C
Saoudi, Hanen. "Synthèse et caractérisation des matériaux La0,8Ca0,1Pb0,1Fe1-xCoxO3 (0,00 ≤ x ≤ 0,20) : application dans le domaine de capteurs de gaz de NH3 et CO". Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0381/document.
Texto completoThis thesis deals with the elaboration and study of the effect of iron substitution by cobalt on the physical properties (structural, morphological and magnetic) and particularly the detection of the two reducing gases NH3 and CO of the compounds La0.8Ca0.1Pb0.1Fe1-xCoxO3 (x = 0.00, 0.05, 0.10, 0.15 and 0.20). The decrease of valume was subsequently confirmed by the SGGA + U approximation using the Density Functional Theory (DFT). Similarly, the morphological study reveals porous micrographs presenting aggregated and agglomerated particles of nanometric size and irregular shape. Structural and morphological analyzes predicted that the compound with x = 0.05 could be considered as a good candidate for application in the field of gas detection. The results of the electrical measurements have shown that the resistance decreases for Co rate below 0.10 and then increases with higher rate. Similarly, electrical responses under gas have shown that our compounds are able to detect gases, with a variation of the electrical resistance easily measurable following exposure under different concentrations of both gases (NH3 and CO) and to deduce that the compound La0.8Ca0.1Pb0.1Fe0.95Co0.05O3 (x = 0.05) presents the best response towards the two tested gases
Lee, Szu-Hsuan. "Capteurs de gaz sélectifs à base de matériaux hybrides organooxoétain et d'oxyde d'étain". Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0034.
Texto completoThe ultimate objective of this research is to draw new prospects in the gas sensing field by finely tuning the chemical nature, the texture and the morphology of the active layer to develop new type selective gas sensors. High gas selectivity has been a challenging issue during the past decades in the gas sensing area. Our approach is based on the design of molecular single precursors – alkynylorganotins which contain suitable functionalities required to obtain stable hybrid materials by the sol-gel method exhibiting selective gas detection towards harmful/toxic gases. Their gas sensing properties have been compared with those of tin dioxide (SnO2) nanoparticles synthesized by the hydrothermal route. A series of functional organooxotin-based materials have been processed as films by the spin or drop coating method and characterized by XRD, FT-IR, RAMAN, AFM, SEM, TEM, N2 sorption and TGA-DTA measurements. Gas sensing studies show that one of the hybrid organotin oxides exhibits an outstanding selective gas sensing response towards various gases, such as CO, H2, ethanol, acetone and NO2 whereas SnO2 nanoparticles present non-selective gas sensing ability under the same experimental condition. Thus, the best gas selectivity toward CO (at 100 and 200 ppm), H2 (at 100, 200 and 400 ppm) and NO2 (at 1, 2, 4 and 8 ppm) was achieved at 100 °C for the hybrid organooxotin-based film, however, it showed no response to ethanol/acetone at the same working temperature. On the other hand, the nanoparticulate SnO2 films prepared are sensitive to all the gases tested at low concentrations (CO: 10~100 ppm; NO2: 0.5~4 ppm; H2: 100~800 ppm; acetone: 25~200 ppm; ethanol: 10~100 ppm) in an operating temperature range from 200 to 400 °C. Moreover, the selectivity of SnO2 materials towards NO2 (between 0.5 ~ 4 ppm) can be optimized by well-manipulating the sensing temperatures. Finally, both organooxotin-based and tin oxide-based materials display superior gas sensing ability at low gas concentrations which opens a fully new class of gas sensing materials as well as a new possibility to integrate organic functionality in gas sensing metal oxides
Fernandes, de Medeiros Indira Aritana. "Nanostructuration de ferrites de cobalt CoxFe3-xO4 : Effets sur la catalyse et la détection de gaz polluants". Electronic Thesis or Diss., Toulon, 2018. http://www.theses.fr/2018TOUL0007.
Texto completoDifferent synthesis methods such as hydrothermal, solvothermal and thermal decomposition were developed to control nanoparticles shape and composition. The influence of synthesis parameters such as the nature of surfactants, the solvents, temperature and time of synthesis were also investigated. The powders were characterized by X-ray Diffraction and Transmission Electron Microscopy coupled with Dispersive Energy Spectroscopy. The catalytic and detection properties were evaluated in presence of CO and NO2 in synthetic air. CoxFe3-xO4 (x = 1, 1.5 ) nanooctahedra with 15-20 nm were produced by hydrothermal synthesis using different surfactants (CTAB, SDS and PVP). Nanocubes of CoFe2O4 were successfully obtained by solvothermal synthesis using oleylamine as surfactant. Nanooctahedra of CoxFe3-xO4 with x = 1.5 have higher activity for the CO conversion than those with x=1, and the conversion starts at lower temperature for the nanocubes. The nanocubes show lower sensitivity for the detection of NO2 than the nanooctahedra which indicates that the {111} faces are more reactive than the {100} ones in cobalt ferrites nanoparticles
Klingenfus, Jérôme. "Compréhension et prédiction des réponses de capteurs chimiques de gaz à surface de matériaux sensibles : application aux polysiloxanes fonctionnalisés". Thesis, Tours, 2011. http://www.theses.fr/2011TOUR4051/document.
Texto completoThe aim of this study is to understand and model the responses of coated chemical sensors for gas phase detection. The work exposed here focuses on quartz crystal microbalance (QCM) coated with functionalized polysiloxanes. Measurements were carried with the QCM exposed to organic vapours when equilibrium was reached. It has been shown that selectivity depends on the material used. To understand that selectivity, each step involved in the detection has been investigated. First of all, with PM-IRRAS, we verified that the frequency shift was proportional to the amount of absorbed analyte. Then, affinity in liquid phase has been determined through a new methodology by NMR. It has also been used, on model system to prove the applicability of Hansen solubility coefficient to calculate mixing free enthalpy. For polymers, those coefficients have been determined using NMR combined with group contribution methods. Based on these descriptors, a numerical model has been built to calculate a priori the performance of a sensor based on, the chemical structure of the sensitive material and of the detected compound
Liu, Zhaoting. "Synthesis, characterization and properties of wood-templated oxides with hierarchical porous structures". Troyes, 2009. http://www.theses.fr/2009TROY0004.
Texto completoHierarchical porous materials have displayed important researching and application values at the fields of separation and purification, selective adsorption, optical function, and sensor design etc. Some preparation methods have been designed to fabricate porous materials. But these traditional methods have to use specific equipments and complicated techniques, and obtained porous materials have single pore size distributions with single functions. The morph-genetic transformation technology is a simple processing technology to fabricate re-fined hierarchical porous materials using organ-isms as template. The organisms in nature are the perfect unities of highly delicate structures and effectively complex functions through mil-lions of years of evolution and natural survival law, which prepare plentiful structural tem-plates for hierarchical porous materials. In the present work, wood-templated Fe2O3, ZnO and NiO with hierarchical porous structures were fabricated through replication wood’s morphology and structure. The synthetic mechanism was studied to optimize the parameters of morph-genetic technology, and wood-templated oxides with wood’s structures were fabricated successfully. The porous structures in multi-scales, the optical properties and the gas sensing properties of wood-templated oxides were researched in detail
Carquigny, Stéphanie. "Conception, caractérisation et mise en œuvre de matériaux organiques conducteurs pour le développement de capteurs de gaz pour l’environnement". Thesis, Lille 1, 2011. http://www.theses.fr/2011LIL10177/document.
Texto completoAs part of the research topic of the Department of Chemistry and Environment at Ecole des Mines de Douai on the development of sensors for gaseous pollutants, previous thesis had enabled the development of a chemical sensor of ammonia with a minimum detectable concentration of 10 ppm, a reversible response and a lifetime of more than 3 years, responding to the major flaw of the electrochemical cells of the market. The sensitive surface of the sensor synthesized in a clean way for the environment, consists mainly of an intrinsically conductive polymer whose electrical resistance varies in proportion to gas concentration.The objective in this thesis is double: on the one hand improve the metrological performance of the ammonia sensor, on the other hand change its sensitive surface by an appropriate method for the specific detection of formaldehyde.For the first objective, different influence parameters such as temperature, relative humidity, wind speed and interfering gases were first evaluated, then the detection threshold was reduced by a factor of 100 by the realization of thin films on interdigitated electrodes. The performances of different syntheses were compared and finally, the robustness of these sensors has been tested in piggeries, which are among the major contributors of ammonia emissions. For the second objective, more sensitive and selective compounds to formaldehyde were introduced into the sensitive surface of the sensor and tested. The fluoral p was finally selected. The first results showed sensitivity to formaldehyde proportional to its concentration, with a detection limit of a few ppm and a response time less than one minute. The concept used here is innovative and demonstrates the feasibility of formaldehyde detection based on the simple measure of changes in electrical resistance of the sensitive film made. The detection limit must still be decreased to respond to the problem of measuring formaldehyde indoor
Libros sobre el tema "Détecteurs de gaz – Matériaux"
Fundamentals of infrared detector materials. Bellingham, Wash: SPIE Press, 2007.
Buscar texto completoCoatings for high-temperature structural materials: Trends and opportunities. Washington, D.C: National Academy Press, 1996.
Buscar texto completoJ, Watson, ed. The stannic oxide gas sensor: Principles and applications. Boca Raton: CRC Press, 1994.
Buscar texto completoPlant, W. H. D. Nickel-containing materials in flue gas desulfurization equipment. Toronto, Ont: Nickel Institute, 1999.
Buscar texto completoCompound semiconductor radiation detectors. Boca Raton, FL: Taylor & Francis, 2012.
Buscar texto completoMercury cadmium telluride imagers: A patent-oriented survey. Amsterdam: Elsevier, 1997.
Buscar texto completoHoughton, Rick. Emergency Characterization of Unknown Materials. London: Taylor and Francis, 2007.
Buscar texto completoHoughton, Rick. Emergency characterization of unknown materials. Boca Raton: CRC Press, 2008.
Buscar texto completoPeskov, Vladimir, Marcello Abbrescia y Paulo Fonte. Resistive Gaseous Detectors: Designs, Performance, and Perspectives. Wiley & Sons, Incorporated, John, 2018.
Buscar texto completoSarkar, Chandan Kumar y Sunipa Roy. MEMS and Nanotechnology for Gas Sensors. Taylor & Francis Group, 2017.
Buscar texto completoCapítulos de libros sobre el tema "Détecteurs de gaz – Matériaux"
RODAT, Sylvain y Stéphane ABANADES. "Combustibles de synthèse à partir de ressources hydrocarbonées". En Le solaire à concentration, 311–30. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9079.ch10.
Texto completoN’TSOUKPOE, Kokouvi Edem. "Matériaux pour le stockage thermochimique et par sorption". En Stockage de la chaleur et du froid 2, 5–97. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9134.ch1.
Texto completoDELAHAYE, Anthony y Laurence FOURNAISON. "Utilisation des hydrates pour le stockage et la distribution du froid". En Stockage de la chaleur et du froid 1, 161–216. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9133.ch7.
Texto completoActas de conferencias sobre el tema "Détecteurs de gaz – Matériaux"
Leduc, M. y E. Courtade. "Nouveaux lasers à fibre pour polariser les spins nucléaires d'un gaz d'hélium : applications médicales à l'Imagerie par Résonance Magnétique". En Les lasers : applications aux technologies de l'information et au traitement des matériaux. Les Ulis, France: EDP Sciences, 2002. http://dx.doi.org/10.1051/bib-sfo:2002058.
Texto completoInformes sobre el tema "Détecteurs de gaz – Matériaux"
Habert, Guillaume y Francesco Pittau. Synthèse conjointe «Constructions durables en béton» du PNR «Energie». Swiss National Science Foundation (SNSF), febrero de 2020. http://dx.doi.org/10.46446/publication_pnr70_pnr71.2020.5.fr.
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