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Artykuły w czasopismach na temat "Résistivités électriques"
Aubert, M. "La méthode de polarisation spontanée en hydrogéologie des terrains volcaniques". Revue des sciences de l'eau 16, nr 2 (12.04.2005): 219–35. http://dx.doi.org/10.7202/705505ar.
Pełny tekst źródłaSaadi, Sanae, Driss Khattach, Mohamed Sbaa, Mohamed El Kharmouz i Olivier Kaufmann. "Reconnaissance par imagerie électrique du site pollué de la décharge publique de la ville d’Oujda (Maroc oriental)". Revue des sciences de l’eau 28, nr 2 (7.07.2015): 165–77. http://dx.doi.org/10.7202/1032296ar.
Pełny tekst źródłaPavageau, Clémence, Pierre Fischer, Gilles Porel i Laurent Caner. "Suivi de l’infiltration sur le site expérimental hydrogéologique de Poitiers par tomographie de résistivité électrique". E3S Web of Conferences 504 (2024): 05004. http://dx.doi.org/10.1051/e3sconf/202450405004.
Pełny tekst źródłaKchikach, Azzouz, Mohammed Jaffal, Tahar Aı̈fa i Lahcen Bahi. "Cartographie de corps stériles sous couverture quaternaire par méthode de résistivités électriques dans le gisement phosphaté de Sidi Chennane (Maroc)". Comptes Rendus Geoscience 334, nr 6 (styczeń 2002): 379–86. http://dx.doi.org/10.1016/s1631-0713(02)01767-4.
Pełny tekst źródłaDezert, Théo, Sérgio Palma-Lopes, Jean-Robert Courivaud, Yannick Fargier i Christophe Vergniault. "Fusion de données géophysiques (TRE et MASW) et géotechniques (granulométrie) pour la caractérisation de digues en terre". Revue Française de Géotechnique, nr 178 (2024): 4. http://dx.doi.org/10.1051/geotech/2024007.
Pełny tekst źródłaK.-Seguin, Maurice, i Michel Allard. "La géophysique appliquée au pergélisol, Québec nordique : historique et développements récents". Géographie physique et Quaternaire 41, nr 1 (18.12.2007): 127–40. http://dx.doi.org/10.7202/032670ar.
Pełny tekst źródłaK.-Seguin, Maurice, i Jean Crépault. "Étude géographique d’un champ de palses à Poste-de-la-Baleine, Nouveau-Québec". Géographie physique et Quaternaire 33, nr 3-4 (25.01.2011): 327–37. http://dx.doi.org/10.7202/1000368ar.
Pełny tekst źródłaFrançois, Benjamin, Jean-Christophe Gourry i Jacques Deparis. "Détection de panache de lixiviats par tomographie de résistivité 3D avec agencement d’électrodes non-régulier". E3S Web of Conferences 504 (2024): 03001. http://dx.doi.org/10.1051/e3sconf/202450403001.
Pełny tekst źródłaGahé, Emile, Michel Allard i Maurice K.-Seguin. "Géophysique et dynamique holocène de plateaux palsiques à Kangiqsualujjuaq, Québec nordique". Géographie physique et Quaternaire 41, nr 1 (18.12.2007): 33–46. http://dx.doi.org/10.7202/032663ar.
Pełny tekst źródłaSUARD, E., Y. FAYOLLE, R. CLÉMENT, V. ROCHER, M. ALLIET, C. ALBASI i S. GILLOT. "Limitation du colmatage dans un bioréacteur à membranes à l’échelle semi-industrielle : modélisation et caractérisation de l’hydrodynamique". Techniques Sciences Méthodes, nr 5 (20.05.2020): 47–57. http://dx.doi.org/10.36904/tsm/202005047.
Pełny tekst źródłaRozprawy doktorskie na temat "Résistivités électriques"
Boubaki, Nerouz. "Détection de cavités par deux méthodes géophysiques : radar de sol et mesures de résistivités électriques". Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00855987.
Pełny tekst źródłaBebot-Courtois, Pascale. "Reconnaissance des sols à l'avancement lors d'excavation par tunnelier : utilisation d'une méthode fondée sur les résistivités électriques". Lille 1, 1999. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1999/50376-1999-99.pdf.
Pełny tekst źródłaCaffin, Jean-Pierre. "Elaboration et caractérisation de céramiques semi-conductrices à base de manganites de cuivre et de nickel : stabilisation des propriétés électriques des thermistances à coefficient de température négatif (C.T.N.) à faibles résistivités". Toulouse, INPT, 1986. http://www.theses.fr/1986INPT009G.
Pełny tekst źródłaAbou, Taha Mohammad. "Reversible modification of the surface properties of silica incorporated in ultra high molecular weight polyethylene : application to batteries separators". Electronic Thesis or Diss., Lyon, 2020. http://www.theses.fr/2020LYSE1299.
Pełny tekst źródłaNotwithstanding the growth of the market of the new lithium-ion batteries, lead-acid batteries still offer advantages that the new ones are not able to equate especially in terms of cost, manufacturing base and the actual market need. In this context, the aim of this work is to enhance the properties of lead-acid batteries PE- separators that predominate 90% of the market of lead-acid batteries separators. These porous membranes consist mainly of precipitated silica, a backbone of ultra-high molecular weight Polyethylene (UHMWPE) and they are processed using a thermally induced phase separation process (TIPS) with naphthenic oil that is subsequently extracted. The resulting porosity is thereafter infiltrated with the electrolyte of the battery. Yet, due to the limited wettability of the pores of the membrane by the polar electrolyte, only a fraction of the available porosity is efficient. This thesis focuses on the enhancement of such wettable porosity by the electrolyte in order to reduce the electrical resistivity of the separator. The wettability of the pores is not only related to the presence of silica but also to the nature of silica surface. Paradoxically, hydrophobic silica favors the blend and the dispersion of aggregates; while hydrophilic silica promotes the wettability of the porosity by the electrolyte. To fulfill these criteria and obtain a material as homogeneous as possible with maximum accessible porosity, a reversible modification of the surface of silica was realized by physical impregnation of surfactants or by chemical modification before the blending and the dispersion in the membrane. Therefore, rheological characterization of the suspensions, contact angle and sorption isotherms and other techniques were used to evaluate the change in the surface properties of the new silica. Then, these tuned silica were dispersed in membranes and the prorosity, the structure, the electrical and mechanical properties were investigated
El, Baroudi Majid. "Auscultation du pergélisol par méthodes géo-électriques : tomographie de polarisation provoquée, diagraphie et tomographie de résistivité électrique en forages". Doctoral thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/29864.
Pełny tekst źródłaIn Nunavik (Québec), frost-susceptible marine sediments were deposited along the coasts of Hudson Bay and Ungava Bay after their deglaciation and during the subsequent marine transgression. Following the postglacial emersion due to the isostatic uplift, the marine deposits came in contact with the cold air and ice-rich permafrost formed in these deposits. Therefore, the Inuit communities located along the coasts of Nunavik may be built on ice-rich permafrost and their infrastructures may be vulnerable to permafrost degradation. This vulnerability may impact the sustainable development of these communities affecting the performance, maintenance costs and service life of their infrastructures. In answer to the needs of efficient permafrost investigation in cold regions engineering to avoid zones vulnerable or use mitigation method to permafrost degradation, the main goals of this doctoral research project are: 1) to assess a conceptual geocryological model of an ice-rich permafrost mound in the discontinuous permafrost zone in Nunavik from the interpretation of five cone penetration tests carried out in the mound, 2) taking into account the previous model and using the forward modelling approach in geophysics, to develop an innovative geophysical approach based on different geo-electrical methods for permafrost investigation, 3) to test this geophysical approach for the characterization of the previous ice-rich permafrost mound, and 4) to contribute to knowledge development on the geocryology of permafrost mounds in Nunavik. The study site is located in a deep valley near the Inuit community of Umiujaq along the east coast of Hudson Bay. Permafrost environments characteristic of Nunavik such as ice-rich permafrost mounds are found in this valley which is accessible from this community. The research methodology consists in using the forward modelling approach in geophysics taking into account the conceptual geocryological model of the studied ice-rich permafrost mound to design the geophysical investigation based of induced polarization tomography and electrical resistivity logging. Two-dimensional and three-dimensional induced polarization tomography and electrical resistivity logging were then performed of the study site. Unidimensional, two-dimensional and three-dimensional models of electrical resistivity and chargeability of the study site were found from the inversion of these geo-electrical surveys. The conceptual geocryological model was then improved by interpretating these geo-electrical models. The ice-rich core of the permafrost mound was accurately delineated using this geophysical approach. In conclusion, the geo-electrical investigation approach developed herein for the two-dimensional and three-dimensional characterization of ice-rich permafrost environments can be used to delineate zones vulnerable to permafrost degradation before the construction of northern infrastructures or along existing infrastructures to assess their vulnerability.
Touron, Frédérique. "Simulation numérique 2D des sondes de résistivité électrique en forage". Aix-Marseille 3, 1996. http://www.theses.fr/1996AIX30105.
Pełny tekst źródłaToumi, Jihene. "Développement de systèmes polymères fonctionnels et caractérisation de leur résistivité électrique". Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25504.
Pełny tekst źródłaNowadays, the use of composites increases with the progress of research. From this context, this work has been prepared for the master project. The project objectives are addressing two issues that affect the determination and the improvement of the electrical resistivity of polymer blends. The first part focuses on the features of the fluorescence in the field of polymers. The carbon black is acting as quencher; it causes the decrease of the fluorescence intensity of the anthracene to turn it off completely for a percentage of 1% in the films and 4x10-3 mol/L of chloroform solution. The second part studies the effect of a thermoplastic elastomer, on the electrical resistivity of the composite polyvinylidene fluoride /polyethylene terephthalate/ carbon black/graphite. It was observed that the electrical resistivity of the blends decreases with increasing carbon black concentration and the addition of 5% and 7.5% of the elastomer.
Naudet, Véronique. "Les méthodes de résistivité électrique et de potentiel spontané appliquées aux sites contaminés". Phd thesis, Aix-Marseille 3, 2004. http://tel.archives-ouvertes.fr/tel-00007727.
Pełny tekst źródłaBourreau, Lucas. "Diagnostic de corrosion sur ouvrage : fiabilité et aide à la décision". Thesis, Nantes, 2017. http://www.theses.fr/2017NANT4083/document.
Pełny tekst źródłaThis thesis work aims at studying the reliability of the corrosion diagnosis of reinforced concrete structures located in coastal marine environment. As part of the Project DéCoF-Ré, several non-destructive measurements were carried out on the piers of the Ré bridge in France, including half-cell potentials of the reinforcement and electrical resistivities of the concrete. The reliability firstly focused on the on-site measurement protocol and, secondly, on the interpretation of the measured data, in particular according to factors influencing the measurement. The results showed that in the case of marine structures, interpretations based on texts or recommendations available in the literature, widely used for structures exposed to atmospheric environment, may lead to erroneous conclusions indicating an overestimated degradation of the structure. Indeed, the tidal phenomenon may induce areas without oxygen for which the measurements concluded the presence of “at risk” zones that did not necessarily resulted from the corrosion of the reinforcements. Based on a major experimental campaign performed on the structure, the influence of the tide (high or low), the tidal and the seasons on the measurements was studied and quantified. By subtracting these environmental and time effects to raw data, interpretation of the corrosion diagnosis has been improved a made more reliable. This was confirmed and validated by autopsies (destructive tests), revealing the real state of corrosion of the reinforcements. Finally, a prioritization of the zones to be repaired was suggested using management's tools
Béhaegel, Mickaël. "Hydrogéophysique à l'échelle du petit bassin versant de La Soutte". Université Louis Pasteur (Strasbourg) (1971-2008), 2006. https://publication-theses.unistra.fr/public/theses_doctorat/2006/BEHAEGEL_Mickael_2006.pdf.
Pełny tekst źródłaThis thesis concerns the hydrogeophysical study of a small water catchment called La Soutte through different geophysical prospecting methods and methodological developments concerning hydrogeophysical monitoring (i. E. , the time monitoring of physical parameters and properties related to underground flows). Streaming potential monitoring over a period of two years shows strong potential variations which are however difficult to interpret in term of flows dynamic. The continuous measurement of underground temperature variations allowed to characterize variations of soil water content and to characterize the maximal vadose zone thickness equal to 15 cm. Finally, resistivity tomography was used to characterize the transport of a salt plume in the ground (20 cm/day) in a saturated zone of the site. An Archie's law calibrated by in situ measurements allows to calculate salt concentrations that are comparable to those obtained by hydraulic (diffusive-advective) modelling of salt migration
Części książek na temat "Résistivités électriques"
GAILLER, Lydie, Jean-François LÉNAT i Philippe LABAZUY. "Surveillance électrique et électromagnétique des volcans". W Aléas et surveillance de l’activité volcanique 3, 263–83. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9046.ch5.
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