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Статті в журналах з теми "Surveillance géochimique des gaz":
Garnier, R. "Surveillance des salariés exposés aux gaz d’échappement." Archives des Maladies Professionnelles et de l'Environnement 75, no. 4 (September 2014): 450–52. http://dx.doi.org/10.1016/j.admp.2014.05.003.
Jarreau, P. H., S. Fougère, and J. L. Bourgain. "Définitions et fiabilité des paramètres monitorés: surveillance des gaz du sang." Réanimation Urgences 9, no. 6 (October 2000): 421–31. http://dx.doi.org/10.1016/s1164-6756(00)90020-3.
WETTA, P. "APPLICATION DE L'IMAGERIE ACOUSTIQUE DE CHAMP PROCHE À LA SURVEILLANCE DE TURBINES À GAZ." Le Journal de Physique Colloques 51, no. C2 (February 1990): C2–237—C2–240. http://dx.doi.org/10.1051/jphyscol:1990257.
Sène, Matar, Maurice Ndeye, and Alpha Oumar Diallo. "Le carbone 14 (14C) un traceur idéal pour la surveillance de la pollution atmosphérique en dioxyde de carbone (CO2) anthropogénique dans la zone de dakar." Journal de Physique de la SOAPHYS 2, no. 2 (May 12, 2021): C20A18–1—C20A18–8. http://dx.doi.org/10.46411/jpsoaphys.2020.02.18.
Boudet, Julien. "Quel contrôle de la pollution industrielle en Chine ?" Annales des Mines - Responsabilité et environnement N° 114, no. 2 (April 10, 2024): 71–74. http://dx.doi.org/10.3917/re1.114.0071.
Gros, H. "Epidemiological surveillance at Electricite de France-Gaz de France: health assessment of nuclear power plant employees between 1993 and 1998." Occupational Medicine 52, no. 1 (February 1, 2002): 35–44. http://dx.doi.org/10.1093/occmed/52.1.35.
Kurtz, M., M. Labrude, V. Noirez, and M. P. Bonnefoi. "Réseaux de distribution des gaz médicaux. Bilan d'activité de la commission locale de surveillance de cette distribution au CHR de Nancy." Annales Françaises d'Anesthésie et de Réanimation 18, no. 9 (November 1999): 1014–21. http://dx.doi.org/10.1016/s0750-7658(00)87953-8.
Papy, Jacques. "L’encadrement de l’échange de droits d’émission dans le marché réglementé du carbone au Québec sera-t-il efficace ? Enjeux, constats et prédictions." Revue générale de droit 44, no. 1 (September 3, 2014): 7–80. http://dx.doi.org/10.7202/1026398ar.
Safran, D. "Réseaux de distribution des gaz médicaux et rôle de la commission locale de surveillance de cette distribution. Interdiction d'utilisation des manodétendeurs d'O2 en aluminium." Annales Françaises d'Anesthésie et de Réanimation 18, no. 9 (November 1999): 937–38. http://dx.doi.org/10.1016/s0750-7658(00)87941-1.
Souadka, Amine, and Abdelilah Souadka. "Perineal morbidity and functional results of pseudocontinent perineal colostomy for low rectal cancer surgery: Retrospective study of 149 cases." Journal of Clinical Oncology 30, no. 15_suppl (May 20, 2012): e14133-e14133. http://dx.doi.org/10.1200/jco.2012.30.15_suppl.e14133.
Дисертації з теми "Surveillance géochimique des gaz":
Lafortune, Stéphane. "Apports de la géochimie des gaz rares à la surveillance des sites de séquestration géologiques de C02." Paris, Institut de physique du globe, 2007. https://tel.archives-ouvertes.fr/tel-00269264.
Lafortune, Stéphane. "Apports de la géochimie des gaz rares à la surveillance des sites de séquestration géologique de CO2." Phd thesis, Institut de physique du globe de paris - IPGP, 2007. http://tel.archives-ouvertes.fr/tel-00269264.
Afin d'être en mesure de respecter les engagements pris en matière de réduction des émissions atmosphériques, tout en permettant la poursuite raisonnée de l'exploitation des énergies fossiles, notamment pour les pays en plein développement économique, il est envisagé de stocker (séquestrer) le dioxyde de carbone produit au niveau de grandes plates-formes industrielles, dans des réservoirs géologiques, c'est-à-dire des roches poreuses et perméables. Bien qu'étant inspirée de nombreux exemples naturels, la séquestration géologique du dioxyde de carbone doit être étudiée en termes de faisabilité et d'intérêt, l'objectif étant de piéger durablement les gaz stockés.
Dans le cadre de ce doctorat, nous nous sommes concentrés sur la surveillance des sites de séquestration, afin d'être en mesure de contrôler la stabilité et l'efficacité des stockages géologiques dans le temps, et de détecter le plus rapidement possible les éventuelles fuites. Notre travail a consisté à développer une méthodologie de surveillance reposant sur l'étude des gaz rares. Nous avons été amenés à concevoir un nouvel outil pour l'analyse des gaz rares dissous dans des échantillons d'eau, la ligne Garodiox, puis à valider cet instrument sur l'étude d'un lac de cratère volcanique, le lac Pavin en Auvergne (France). Enfin, nous avons choisi d'illustrer la méthodologie de surveillance que nous proposons, à l'aide du contrôle de l'intégrité de l'accumulation naturelle de dioxyde de carbone de Montmiral, dans le département de la Drôme (France).
Les résultats obtenus soulignent la faisabilité et l'intérêt de la mise en place d'une telle méthodologie de surveillance au droit des sites de séquestration géologique du dioxyde de carbone.
Lacroix, Elodie. "Développements de protocoles méthodologiques pour le monitoring géochimique appliqué à la détection de fuite d'hydrogène (H₂) à l'aplomb des sites de stockage souterrain." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0342.
Combined with the energy transition, underground H₂ storage is a storage solution for the energy. The research project named "Rostock'H" integrating this thesis work associated the University of Lorraine and Ineris to develop geochemical monitoring methods in order to analyze the risks and opportunities. This project aims to study the risks and opportunities of H₂ storage in salt caverns. The next goal is to be able to store H₂ in a volume of up to 1,000,000 m³ between 300 and 1,400 m deep. The development of an underground storage site involves controlling pre, syn and post-operational risks by geochemical monitoring methods. Colorless and odorless, H₂ is a volatile and explosive gas. A particular attention is therefore paid to the risks of subsurface leakage from these storage sites and to the metrology associated with this detection. This thesis work had three main objectives: (i) to experiment in-situ and continuous monitoring methods from dissolved gas injections on a dedicated experimental site, (ii) to determine the potential impacts of a leak in “soils” and “aquifers” with a modeled analysis of the geochemical behavior of H₂ and associated parameters, (iii) to establish recommendations and a monitoring strategy for existing or future underground storage sites to prevent potential H₂ leakages. Composed of a semi-confined aquifer from 13 m deep, this experimental site in the Paris Basin has several wells and equipments reaching the saturated and unsaturated zones. Oxidizing, oxygenated and moderately mineralized, the waters of this aquifer have an initial chemical composition belonging to the calcium bicarbonate facies with a slight alteration in nitrates and sulphates. Several steps were necessary to simulate and model a potential leak: - Preparation of the site and choice of the metrological systems that will be deployed - Establishment of the initial state of the site through the definition of a geochemical baseline from measurements of the piezometric level, physico-chemical parameters, analyzes of ionic species and dissolved gas measurements in a dedicated well by combining of the Raman and infrared spectroscopies - Co-injection of dissolved He and hydrogeological tracers to validate the experimental protocol of the H₂ injection and to allow a first analysis of the aquifer dynamics - Co-injection of dissolved H₂ and tracers selected according to the adapted protocol linked to the experience feedback from the He injection - Post-injection monitoring to determine the impacts and the kinetics of return in the initial state of the aquifer using in particular the monitoring system of dissolved gases by optical sensors. An initial concentration of H₂ dissolved at 1.78 mg.L-1 was injected under surface conditions for 2.5 hours into the aquifer. The migration of the dissolved H₂ plume as well as other gases initially present in the aquifer was monitored both by continuous method (Raman and infrared spectroscopies) and discontinuous measurements (partial degassing). A dynamic of H₂ transfer in the water table was observed up to 20 m downstream from the injection well: 0.6 mg.L⁻¹ at 5 m, 0.17 mg.L⁻¹ at 7 m then 1.8*10⁻³ mg.L⁻¹ of H₂ at 10 and 20 m during the first week. Following the addition of H₂(aq), the physico-chemistry of the aquifer was modified with an increase of pH, a decrease of redox potential and of the O₂(aq) concentration. From continuous measurements by Raman spectroscopy (at 7 m downstream the injection well), a 2D model was established on the basis of a mixed H₂ diffusion/advection process, assuming a single-channel flow in the aquifer. The experimental results acquired in this thesis work validate, over the long term, the metrological choices applied, with a detection limit of H₂ in aquifer lowered to 0.02 mg.L⁻¹. These results thus confirm the feasibility of monitoring dissolved H2 in shallow aquifers and highlight the potential impacts of leakages from underground storage reaching the surface
Adisaputro, Didi. "Metrology and Monitoring of Gases Transfer (CO₂ and CH₄) Processes within the System of Geosphere and Biosphere." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0313.
This study is a continuation of our previous geochemical monitoring finding at the injection wells of Rousse 1 ( Total CCS pilot, Lacq- Rousse, France) where it was identified that the soil CO₂ mole fraction (χc) evolution in subsoil was negatively correlated with the level of the water table and the CO₂ sources were attributed to the CO₂-rich aquifers. However, it is still unclear whether this relationship exists in the forest ecosystem, representing a significant proportion of the CO₂ atmospheric budget. For this reason, this thesis focuses on monitoring the gas exchange and its main driver of the transport process between soil (-1 m), subsoil (-6 m), and biosphere. We developed and implemented an in-situ geochemical monitoring system for continuous monitoring of CO₂ mole fraction in the subsoil coupled with a micrometeorological monitoring system using a pre-established flux tower in the forest Ecosystem (Montiers, Lorraine Region, France). This soil gas measurement infrastructure combining borehole measurement with micrometeorological measurement offers great possibilities for long-term in-situ and continuous gas monitoring to derive the vertical distribution of CO₂. Thus, this infrastructure allowed the observation of the temporal dynamics in soil-gas CO₂ research. During the study periods, the ecosystem acted as a net carbon sink with a mean annual NEE, GPP, and Reco of -453±122 gC m-2y-1, -1468 ±109 gC m-2y-1, and 1052 ±88 gC m-2y-1 consecutively. The Carbon exchange, climate, and environmental drivers during the drought episodes were compared with long-term reference data recorded from 2014 to 2017. In contrast with some previous research where GPP and Reco parallelly decreased during the drought episodes, our site showed Reco is more sensitive to drought than GPP, resulting in a significant increase in Net Ecosystem exchange. Reco decreased by 20%, and 26% were found in Summer and Autumn (2018-2019) relative to the ref erence years (2014-2017). This study shows strong empirical shreds of evidence that wind turbulence plays a significant role in driving the deep soil CO₂ concentration. We hypothesize that this could be due to pressure pumping effects where it decreases the CO₂ molar fraction in the soil during high turbulence and increasing the CO₂ storage in deep soil during low turbulence. This study also demonstrates that permeability significantly reduced during wet periods diminishing molecular diffusion and advection. This study also revealed a strong biotic influence on CO₂ production. The δ¹³CCO₂ values in our site subsoil can be attributed to respiration and decomposition of the C3 plants. These biological origins of soil CO₂ are highly likely increases air density resulting in gravitational percolation that leads the CO₂ stored in a deeper layer of soil. The relationship of subsoil gases also emphasizes that biogenic components dominate the origins and controlling process of subsoil CO₂ while the geochemical process plays an insignificant role
Jeandel, Elodie. "Monitoring géochimique par couplage entre les gaz rares et les isotopes du carbone : étude d'un réservoir naturel." Phd thesis, Université Paris Sud - Paris XI, 2008. http://tel.archives-ouvertes.fr/tel-00399871.
Le développement d'outils de surveillance fiables pour s'assurer de la pérennité et de la sécurité des stockages est un préalable à la mise en œuvre des tels sites.
Dans ce cadre, une méthodologie de monitoring géochimique combinant la géochimie des gaz rares et des isotopes du carbone a été testée sur des analogues naturels et industriels.
Sur les analogues naturels de contextes géologiques variés, des comportements systématiques des paramètres géochimiques en fonction du confinement des sites ont pu être révélés, attestant de l'efficacité de ces outils en termes de détection des fuites et en tant que traceurs du comportement du CO2 dans les futurs sites de stockage.
De plus, une expérience de traçage géochimique sur un stockage de gaz naturel a démontré qu'il est possible d'identifier les processus physico-chimiques se déroulant dans le réservoir à l'échelle humaine, renforçant l'intérêt pour l'outil proposé et apportant des informations méthodologiques sur son utilisation.
Jeandel, Elodie. "Monitoring géochimique par couplage entre les gaz rares et les isotopes du carbon : étude d'un réservoir naturel." Paris 11, 2008. http://www.theses.fr/2008PA112318.
To limit emissions of greenhouse gases in the atmosphere, CO2 geological sequestration appears as a solution in the fight against climate change. The development of reliable monitoring tools to ensure the sustainability and the safety of geological storage is a prerequisite for the implementation of such sites. In this framework, a geochemical method using noble gas and carbon isotopes geochemistry has been tested on natural and industrial analogues. The study of natural analogues from different geological settings showed systematic behaviours of the geochemical parameters, depending on the containment sites, and proving the effectiveness of these tools in terms of leak detection and as tracers of the behaviour of CO2. Moreover, an experience of geochemical tracing on a natural gas storage has demonstrated that it is possible to identify the physical-chemical processes taking place in the reservoir to a human time scale, increasing interest in the proposed tool and providing general informations on its use
O, Burrola Francisco de la. "Étude pétrographique et géochimique intégrée du charbon et de shale à gaz du bassin Sabinas et de Chihuahua au Nord du Mexique : estimation des ressources en gaz méthane." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0233/document.
This comprehensive characterization study was performed using organic petrology and geochemistry conducted in the Sabinas basin and Chihuahua in northern Mexico. This information allowed a numerical modeling of gas formation, considering the thermal subsidence of coal and carbonaceous shales.The objectives of this thesis are: establish a characterization methodology for the studied rocks ; estimate potential gas generator and its regional distribution ; estimate the methane gas resources. For the development of this project, we conducted an intensive campaign representative sampling of coal, carbonaceous shales and coal gas "in situ". For the Sabinas basin were studied 97 samples and 114 samples in the basin of Chihuahua. The analyses carried out that were used on the samples analyzed allowed to characterize the kerogen and gas. The methodology used to cross petrographic and geochemical information to analyze the petroleum system by numerical modeling. Analyses were: Petrographic, reflectance %Ro, elemental analysis and immediate, Rock Eval6 ® (Bulk rock), isotopic analysis, [delta]13C, [delta]D, (coal gas), scanning electron microscopy, image analysis and analysis of macerals fluid inclusions. The analyzes that were used on the samples allowed to characterize the sample, the kerogen and gas. The methodology used to cross petrographic and geochemical information for analyze the oil system by numerical modeling. Analyses were: Petrographic, reflectance% Ro, elemental analysis and immediate, Rock Eval6 ® (Bulk rock), isotopic analysis, d13C, dD, (coal gas), scanning electron microscopy, image analysis and analysis of macerals fluid inclusions. A computer program was constructed to cross the information with the analysis of samples of artificial maturation experiments in the laboratory. This approach allowed estimation of methane gas resources generated by coal and carbonaceous shales. [...] In conclusion, between the two basins studied, the Sabinas basin, generates more gas for industrial exploitation. However, the rocks of the basin of Chihuahua unconventional types (shale gas) show good potential for hydrocarbon generation. The methodology used for the study of kerogen and gas in the two basins is in our opinion the most appropriate to meet the objectives proposed in this thesis. This allows to characterize the thermal evolution of coal, carbonaceous shale (shale gas), coal gas and hydrocarbon source rocks
Renard, Stéphane. "Rôle des gaz annexes sur l'évolution géochimique d'un site de stockage de dioxyde de carbone : application à des réservoirs carbonatés." Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL025N/document.
Capture and geological storage of CO2 are an main option to limit GHEG emissions of industrial poles and power plants. The captured gases are not constituted by pure CO2 but contain a fraction (until 10 %) of other gases : Ar, N2, SOx and NOx. Most of these gases are highly reactive and could have a strong influence on physical and chemical conditions of the milieu and on the environmement if contamination of neighbour aquifers occurs by leakages. Several laboratory experiments investigated the reactivity of carbonated reservoir and cap rocks from the Aquitaine Basin as well as the reactivity of synthetic mineralogical blends in geologically relevant P-T conditions. The rocks, associated to brine, were altered in presence of various gaseous components at 100 bar and 150°C during one month : pure CO2, pure SO2, pure NO and a CO2 mixture containing fractions of Ar, N2, SO2 and O2. Each experiment was compared with a blank in which the initial gas was replaced with pure N2. Pure CO2 show a limited reactivity on the rocks. NO and SO2 show a intrinsic reactivity by disproportionations in aqueous or vapour phases implying a high alteration of rocks by compled acid – base and oxidation mechanisms. The gas mixture show also a double reactivity : SO2 is oxidized in sulphuric acid dissolving carbonates and clay minerals and O2 oxidizes all reduced mineralogical phases. These gases even in limited fractions control the reactivity of rocks. Their presence could change the behaviour of the rock toward gas and induce positive as well as negative transformations. Their implication must be checked for each geological storage as a function of gas composition, mineralogy and petrophysical
Bourry, Christophe. "Caractérisation physique et géochimique d'hydrates de gaz d'environnements géologiques différents : apport des techniques de Diffraction X Synchrotron et de Spectroscopie Raman : contribution à l'étude de leur origine, formation et stabilité sur les marges." Brest, 2008. http://www.theses.fr/2008BRES2043.
The knowledge of the occurrence of gas hydrates in the natural environment, their physical, chemical or thermodynamical properties is essential to prevent geohazards, to anticipate their role in climate change or to develop technologies to take advantage of this energy resource. To mis purpose, this work reports a physical and chemical characterization of four natural gas hydrates from African and Norwegian margins, and from the Sea of Marmara, for documenting their origin, formation and stability. Samples from African and Norwegian margins crystallize in type I structure. This observation is in agreement with their biogenic origin. On the other hand, hydrate samples from the sea of Marmara, characterized by a thermogenic origin, exhibit a type II structure. Raman spectroscopy was also used to investigate the dissociation processes of natural gas hydrates. These results indicate that there is no preferential dissociation of large small cages. Thermodynamical modeling let us evaluate the highly variable gas hydrate stability fields in sediments from the Hakon Most Mud Volcano, whereas it let us assert that only thermogenic gas hydrates can crystallize in the sea of Marmara. In a last chapter, geochemical data obtained from porewaters, gases, and gas hydrates collected during the Vicking cruise (2006) - HERMES Program - permitted to characterize the processes controlling the fluid circulation in the Hakon Mosby Mud Volcano where gas hydrates are present in great quantity
MATHIS, GAEL. "Outils de détection de rupture et de diagnostic : application à la surveillance de turbines à gaz." Rennes 1, 1994. http://www.theses.fr/1994REN10121.
Книги з теми "Surveillance géochimique des gaz":
Brohé, Arnaud. Comptabilité carbone. Paris: La Découverte, 2013.
Canada. Indian and Northern Affairs Canada. Report on federal science conducted in support of northern energy development, 2002-2010. Ottawa: Indian and Northern Affairs Canada, 2011.
Canada, Canada Environment, ed. Protocols and performance specifications for continuous monitoring of gaseous emissions from thermal power generation. [Ottawa]: Environment Canada, 2005.
Dept.of Environment. Landfill Gas (Waste Management Paper). Stationery Office Books, 1991.
Hartmann, Philippe. Centrales nucléaires et environnement - Prélèvements d'eau et rejets. EDP Sciences, 2014. http://dx.doi.org/10.1051/978-2-7598-0913-4.
Частини книг з теми "Surveillance géochimique des gaz":
MOUNE, Séverine, and Émilie ROULLEAU. "Surveillance des fluides volcaniques." In Aléas et surveillance de l’activité volcanique 3, 7–55. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9046.ch1.
GAILLER, Lydie, Jean-François LÉNAT, and Franck DONNADIEU. "La surveillance gravimétrique des volcans." In Aléas et surveillance de l’activité volcanique 3, 235–62. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9046.ch4.
GOUHIER, Mathieu. "Surveillance des volcans par télédétection spatiale." In Aléas et surveillance de l’activité volcanique 2, 177–226. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9045.ch3.
TADINI, Alessandro, Lucia GURIOLI, Sylvain CHARBONNIER, Simon THIVET, and Jean-Claude THOURET. "Surveillance des produits éruptifs : les écoulements pyroclastiques et leurs dépôts." In Aléas et surveillance de l’activité volcanique 3, 183–233. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9046.ch3.
ALLIO, I., A. M. DEMARTINI, J. J. MENEC, V. CARDE, and V. TREGUER-HERROU. "Le dépistage par le Laboratoire d’analyses, de surveillance et d’expertise de la Marine de Brest du radon, un gaz radioactif naturel en Bretagne." In Médecine et Armées Vol. 44 No.4, 309–16. Editions des archives contemporaines, 2016. http://dx.doi.org/10.17184/eac.6820.
Звіти організацій з теми "Surveillance géochimique des gaz":
Habert, Guillaume, and Francesco Pittau. Synthèse conjointe «Constructions durables en béton» du PNR «Energie». Swiss National Science Foundation (SNSF), February 2020. http://dx.doi.org/10.46446/publication_pnr70_pnr71.2020.5.fr.