Literatura científica selecionada sobre o tema "Filtres à air – Matériaux"
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Artigos de revistas sobre o assunto "Filtres à air – Matériaux"
Massiéra, Michel, Bernard Boncompain e Joseph Merheb-Harb. "Interprétation des mesures inclinométriques durant la construction des remblais zonés des ouvrages de retenue du Complexe La Grande, phase I". Canadian Geotechnical Journal 36, n.º 3 (25 de outubro de 1999): 533–43. http://dx.doi.org/10.1139/t99-016.
Texto completo da fonteGinestet, A., S. Mann, S. Parat, S. Laplanche, J. H. Salazar, D. Pugnet, S. Ehrler e A. Perdrix. "Comportement des filtres a air de ventilation generale vis-a-vis des aerosols biologiques". Journal of Aerosol Science 28, n.º 7 (outubro de 1997): 1360. http://dx.doi.org/10.1016/s0021-8502(97)90127-0.
Texto completo da fonteVialou, Agueda Vilhena, e Denis Vialou. "Archéologie: du passe au présent, dês paysages au territoire". Revista Nordestina de História do Brasil 2, n.º 4 (28 de junho de 2020): 13–44. http://dx.doi.org/10.17648/2596-0334-v2i4-1918.
Texto completo da fonteGeorge, Christian. "La photocatalyse pour purifier l'air ambiant - mythe ou réalité ?" La Météorologie, n.º 111 (2020): 041. http://dx.doi.org/10.37053/lameteorologie-2020-0091.
Texto completo da fontePercy, Kevin E. "Geoscience of Climate and Energy 11. Ambient Air Quality and Linkage to Ecosystems in the Athabasca Oil Sands, Alberta". Geoscience Canada 40, n.º 3 (31 de outubro de 2013): 182. http://dx.doi.org/10.12789/geocanj.2013.40.014.
Texto completo da fonteTavares, Ana C., Jiyun Chen, Nicolas Dumaresq, Fabiola Navarro-Pardo, Sergei Manzhos e Nadi Braidy. "(Keynote) Oxygen Reduction and Evolution Reactions on Faceted MnxCo1-XFe2O4 Nanoparticles Prepared By Induction-Coupled Plasma". ECS Meeting Abstracts MA2023-02, n.º 58 (22 de dezembro de 2023): 2788. http://dx.doi.org/10.1149/ma2023-02582788mtgabs.
Texto completo da fonteRenn, Nick, e Elaine Wright. "The effect of artificial substrates on the pathogenicity of Steinernema feltiae (Rhabditida: Steinernematidae) to adult Musca domestica (Diptera: Muscidae)". Nematology 2, n.º 2 (2000): 217–22. http://dx.doi.org/10.1163/156854100508953.
Texto completo da fonteNYS, Y. "Préface". INRAE Productions Animales 23, n.º 2 (10 de abril de 2011): 107–10. http://dx.doi.org/10.20870/productions-animales.2010.23.2.3292.
Texto completo da fonteEstre, Nicolas, Daniel Eck, Frédéric Moutet, Emmanuel Payan, Alix Sardet, Roberto Gaggiano e Maarten van Geet. "Identification de matériaux par tomodensitométrie haute-énergie dans des objets bétonnés". e-journal of nondestructive testing 28, n.º 9 (setembro de 2023). http://dx.doi.org/10.58286/28488.
Texto completo da fonteKim, Hyeon-Suk. "The Sense of Emptiness in the Art of Installation of Yasuaki Onishi". L’Installation artistique : une expérience de soi dans l’espace et dans le temps, n.º 40 (15 de dezembro de 2020). http://dx.doi.org/10.35562/iris.1252.
Texto completo da fonteTeses / dissertações sobre o assunto "Filtres à air – Matériaux"
Daouli, Ayoub. "Ab initio exploration of materials for the detection and selective capture of iodine species and nitrogen oxide". Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0023.
Texto completo da fonteRadioactive isotopes of iodine, such as ¹²⁹I and ¹³¹I, are likely to be disseminated in the environment after a serious nuclear accident or a leak in fuel reprocessing facilities, under the form of highly volatile gaseous species, I₂ and ICH₃, resulting in dramatic consequences. It is therefore necessary to accurately detect these molecules and develop passive filters for trapping them. The challenge today is to find an effective solution that can be applied in nuclear conditions. In particular, the presence of other gaseous species called contaminants, such as CO, H₂O and O₂ can affect the performance of materials used to detect or trap these iodine volatile species in a perennial manner. Molecular scale simulation methods provide a fundamental understanding of the observed phenomena, providing in-depth knowledge at the atomic level that is often difficult to obtain by experimental methods. In this work, density function theory (DFT) calculations and grand canonical Monte Carlo (GCMC) simulations have been used to identify promising materials for the detection and capture of gaseous molecules. Regarding sensing, graphene, and two-dimensional carbon materials (BC₃, C₃N, BCN₆-2) are promising candidates. For graphene, our results reveal that in terms of thermodynamic selectivity, PG (pristine graphene), Cu_PG (copper-doped pristine graphene) and to a lesser extent Ag_MG (silver-doped monolayer graphene) are clearly the most interesting graphene monolayers for the selective capture of I₂, ICH₃ in the presence of CO, H₂O and O₂. As far as 2D carbon materials are concerned, results of adsorption on C₃N seem very promising insofar the difference between the adsorption energies of (I₂, ICH₃) vs (CO, H₂O) is very significant. These findings are strengthened by simulations at finite temperatures. In addition, a discussion of electronic structure calculations is also provided. For trapping, we have selected a class of porous materials named Metal-Organic Frameworks (MOFs). Our systematic evaluation of the adsorption performance of M-MOF-74 where M = Mg, Zn, Cu, Fe, Co, Ni and Mn showed that from a thermodynamic point of view, Fe-MOF-74 and Cu-MOF-74 are clearly the most interesting structures for the selective capture of iodine compounds. A second application addressed in this thesis, still in the context of noxious gases, is the adsorption of NOx emissions. These emissions in a confined work environment without ventilation or treatment represent a major concern. Recent studies have revealed that zeolites can provide effective capture of NOx. In this context, our results reveal that from a series of divalent cations-exchanged zeolite (Be²⁺, Mg²⁺, Ca²⁺, Sr²⁺, Ba²⁺, Fe²⁺, Cu²⁺, Zn²⁺, Pd²⁺, Pt²⁺), Faujasite Y-Pt²⁺, is an interesting material for the selective adsorption of NOx from diesel engine exhaust in the presence of water vapor. We then have extended our explorations to MOFs by integrating the same cations as metals into the catecholate ligand prior to its incorporation into the cage-like UiO-66. GCMC simulations implementing a new NOx/MOF force field were deployed to gain an in-depth understanding of the microscopic mechanism involved. Our molecular simulations indicate that the nanoporous UiO-66-CatFe(II) would be an excellent adsorbent for NOx capture, even at very low concentrations of a few ppm. This complements the portfolio of porous materials that, to date, have been almost exclusively tested under operating conditions involving higher NOx concentrations (>1000 ppm)
Mokthari, Ilham. "Synthèse et caractérisation de polyimides poreux à faible constante diélectrique". Chambéry, 2005. http://www.theses.fr/2005CHAMS049.
Texto completo da fonteThis research work concerns the elaboration of low dielectric constant materials to be used as interlayer dielectrics in microelectronics. The strategy adopted for the generation of porosity relies on the thermal degradation of thermolabiles polycaprolactone sequences simply dispersed or covalently linked to thermostable polyimide matrices, slightly crosslinked by a photochemical process. The first part of this work is devoted to the synthesis and characterization of different polyimides matrices. In a second part, functionnalized polycaprolactone segments (amine-PCL or diamine-PCL) have been synthesized, characterized and involved in a polycondensation reaction in order to end up with controlled architecture copolymers. The last part of the work is related to the elaboration of porous materials. First, the experimental conditions suitable for a complete elimination of the thermolabile segments without any mage to the polyimide matrix have been determined. Therefore, a precise study of the influence of different parameters (polyimide structure, glass transition temperature, polycaprolactone proportion introduced. . . ) on the elaboration of porous structures have been realized. The results obtained suggest at two parameters are crucial for the elaboration of porosity : a high transition temperature of the matrix as well as a phase separation of the thermolabile segments in the themostable polymer
Shirkovskiy, Pavel. "Conjugaison de phase ultrasonore pour la vélocimétrie des écoulements gazeux : investigations des potentialités en micro-fluidique". Phd thesis, Ecole Centrale de Lille, 2010. http://tel.archives-ouvertes.fr/tel-00604511.
Texto completo da fonteBadoil, Bruno. "Contrôle spectrophotométrique large bande de filtres interférentiels en cours de dépôt". Aix-Marseille 3, 2007. http://www.theses.fr/2007AIX30047.
Texto completo da fonteBroadband optical monitoring for thin-film filter manufacturing is more and more developed thanks to better performances of spectrometers with array detectors. With our broadband system developed during this thesis work, we have two monitoring channels, a transmittance and a reflectance one. The two spectral responses are recorded simultaneously at each turn of the substrate holder over an extended spectral range [400 nm ; 1000 nm]. The use of such an optical measurement system enables a real time re-engineering process of reoptimizing the coating design after each layer. In situ determination of the real and imaginary parts of refractive indexes are possible too. Index characterization and manufacturing results are shown in this work
Lombardi, Mariangela. "Élaboration de matériaux céramiques cellulaires pour la réalisation de filtres à particules fines ou de substituts osseux". Lyon, INSA, 2009. http://theses.insa-lyon.fr/publication/2009ISAL0018/these.pdf.
Texto completo da fonteL’objet de cette thèse est la mise au point d’une méthode pour l’élaboration de matériaux céramiques poreux et leur caractérisation mécanique. Les matériaux poreux ont été préparés en vue d’applications à température ambiante (en particulier, pour la filtration des particules en suspension dans l’atmosphère suite aux émissions des véhicules et des installations de chauffage) et biomédicales (comme substituts osseux). Le procédé mis au point dans cette thèse est une combinaison entre la technique basée sur l’utilisation d’agents porogènes et le gelcasting. En particulier, la méthode décrite dans cette thèse se base sur la gélification d’une gélatine naturelle. Des billes de polyéthylène sont ajoutées à la barbotine pour la création des pores dans le matériau céramique après frittage. Une poudre d’alumine alpha a été utilisée pour la mise au point de cette méthode, pour évaluer l’influence du taux de particules organiques sur le comportement mécanique des matériaux poreux. Enfin, en vue de l’application biomédicale de ces matériaux, une poudre d’hydroxyapatite a aussi été utilisée sans, et avec, les sphères de polyéthylène pour préparer des échantillons poreux à 60 % en volume
Lottiaux, Michel. "Caractérisation des couches minces d'oxyde de titane pour filtres optiques". Aix-Marseille 3, 1987. http://www.theses.fr/1987AIX30103.
Texto completo da fonteBadev, Alexandre. "Matériaux diélectriques à faibles pertes utilisés comme résonateurs et filtres dans les circuits micro-ondes". Toulouse 3, 2008. http://thesesups.ups-tlse.fr/480/.
Texto completo da fonteWith the request for information exchange via wireless communications, the needs for equipment using microwaves and microwave technology have been increasing in the last 10 years. At the beginning of the 21st century, relating to the field of telecommunications and aerospace, the microwave devices were miniaturized. Dielectric pellets were used as resonator-oscillator components, respectively micro-strip lines were integrated as waveguides. It should be noticed that a single microwave material is not universal and therefore cannot be used in a wide frequency range. The devices used in wireless communications tend to have smaller dimensions and larger capacity. Therefore the operating frequency shifts to a higher range, notably the GHz domain. Dielectric resonators are used in microwave integrated circuits in order to concentrate electric fields within the resonator body. Their quality factor (Q) is similar to that of resonant cavities, as they reflect a high linearity at high power levels. They are commonly used as frequency stabilizers for oscillators operating in the microwave frequency range. A dielectric resonator is characterized by its three main properties: a relatively high dielectric permittivity (er), low dielectric losses (tan d), and a thermal stability at a given resonant frequency (tf). The dielectric constant is a criterion for miniaturization of the resonator because the dielectric permittivity is inversely proportional to its size. The low loss (or high quality factor) allows greater selectivity of the bandwidth at the resonant frequency, a better noise suppression and low loss of transmitted power. .
Houndonougbo, Fiffamen Alphonsine. "Conception, réalisation, test et optimisation de filtres reconfigurables en fréquence intégrant de nouveaux matériaux ferroélectriques". Limoges, 2010. https://aurore.unilim.fr/theses/nxfile/default/e13e9767-8e0b-4889-8231-2d704147e6c2/blobholder:0/2010LIMO4068.pdf.
Texto completo da fonteThis thesis work discusses the design, manufacture, testing and optimization of a two-pole tunable band-pass filter, integrating new ferroelectric materials developed for a project of the National Agency for Research, ACOR2. In the first step, MIM (Metal-Insulator-Metal) capacitors, interdigitated capacitors and resonators were studied to assess the performance of materials and guide manufacturers to optimize the properties of the intended application. Then, the ferroelectric discrete capacitors were associated with microstrip resonators etched on alumina substrate to create two-pole tunable Bandpass Chebyshev filters of 6. 6 % fractional bandwidths. The filters tune from 380 MHz to 420 MHz (10 %) under a 1. 5 kV/mm electrical field. The insertion loss is -2. 9 dB at zero bias and the return loss was better than 11 dB at 420 MHz
Dionne, Pierre-Olivier. "Étude expérimentale et comparative de l'érosion de contact entre un till et différents matériaux filtres grossiers". Master's thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/70263.
Texto completo da fonteContact erosion is an internal erosion process that can be found in embankment dams and dikes which can lead to failure. It is defined as the pullout and dragging of fines from a base material through an adjacent coarser material under seepage parallel to the interface. This study intends to understand and to identify the mechanisms that control contact erosion with a well-graded base soil (Romaine 3 till) combined with different filter materials. To study the erosion process, a new experimental setup has been developed. Also, in order to properly assess the mechanisms involved with a well-graded base soil, comparative tests have also been performed with poorly-graded base soils. It was found that the grading of the base material as an important impact on the initiation and progression of contact erosion as different mechanisms such as paving and clogging can develop to limit or even stop the erosion. With the experimental results of this study as well as those found in the literature, a model for contact erosion threshold evaluation is proposed. Additionally, an experimental approach is proposed in order to simplify the study of contact erosion for well-graded base soils. Finally, a conceptualization of the erosion process (initiation and evolution) depending on the grain size of both filter and base soils and on the hydraulic solicitation is proposed. The Romaine 3 till susceptibility to contact erosion is assessed with latter conceptualization.
Courrèges, Stanis. "Les matériaux ferroélectriques et supraconducteurs appliqués à la conception de dispositifs microondes". Limoges, 2007. https://aurore.unilim.fr/theses/nxfile/default/1310462e-e3ee-4477-9c6d-aa828a54b786/blobholder:0/2007LIMO4024.pdf.
Texto completo da fonteFirst of all, this manuscript deals with the input multiplexer channel superconductor band pass filters, with high selectivity, high Q and narrow bandwidth, for satellite applications. Tuning methods are developed with respect to the stringent specifications and limit the losses caused by the usual methods. The central frequencies of the superconductor filters are adjusted by taking into account the responsible and controllable physical parameters. An extra method is suggested to obtain a little frequency tuning after this first step and respect rigorously the specifications. Secondly, a 2D/3D static and electromagnetic analysis, based on the method of lines, of microwave planar tunable devices including ferroelectric thin-film is presented. This software can characterize the ferroelectric layers: determination of the permittivity versus the applied electric field
Livros sobre o assunto "Filtres à air – Matériaux"
Halifax Open Air Mission Committee. Report of the Open Air Mission Committee. [S.l: s.n., 1987.
Encontre o texto completo da fonteDevinny, Joseph S. Biofiltration for air pollution control. Boca Raton, Fla: Lewis Publishers, 1999.
Encontre o texto completo da fonteHesketh, Howard E. Fine particles in gaseous media. 2a ed. Chelsea, Mich: Lewis Publishers, 1986.
Encontre o texto completo da fonteFabric filtration for combustion sources: Fundamentals and basic technology. New York: M. Dekker, 1985.
Encontre o texto completo da fonteBaker-Laporte, Paula. Prescriptions for a Healthy House. New York: New Society Publishers, 2009.
Encontre o texto completo da fonteBaker-Laporte, Paula. Prescriptions for a healthy house: A practical guide for architects, builders, and homeowners. Santa Fe: InWord Press, 1998.
Encontre o texto completo da fonte1948-, Elliott Erica, e Banta John 1955-, eds. Prescriptions for a healthy house: A practical guide for architects, builders & homeowners. 3a ed. Gabriola Island, B.C: New Society Publishers, 2008.
Encontre o texto completo da fonteZhang, Jiujun, e Vladimir Neburchilov. Metal-Air and Metal-Sulfur Batteries: Fundamentals and Applications. Taylor & Francis Group, 2016.
Encontre o texto completo da fonteZhang, Jiujun, e Vladimir Neburchilov. Metal-Air and Metal-Sulfur Batteries: Fundamentals and Applications. Taylor & Francis Group, 2019.
Encontre o texto completo da fonteZhang, Jiujun, e Vladimir Neburchilov. Metal-Air and Metal-Sulfur Batteries: Fundamentals and Applications. Taylor & Francis Group, 2016.
Encontre o texto completo da fonte