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Academic literature on the topic 'Détection de CO₂'
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Journal articles on the topic "Détection de CO₂"
Regniers, Olivier, Lionel Bombrun, and Christian Germain. "Modélisation de texture basée sur les ondelettes pour la détection de parcelles viticoles à partir d'images Pléiades panchromatiques." Revue Française de Photogrammétrie et de Télédétection, no. 208 (September 8, 2014): 117–22. http://dx.doi.org/10.52638/rfpt.2014.122.
Full textLajoinie, A., K. A. Nguyen, Y. Mimouni, A. C. Castellan, S. Malik, L. El Amrani, A. Portefaix, et al. "CO-65 – Détection prospective des EIM pendant 14 mois chez l'enfant hospitalisé." Archives de Pédiatrie 22, no. 5 (May 2015): 227. http://dx.doi.org/10.1016/s0929-693x(15)30165-2.
Full textMeyer, Gilles, Mariette Ducatez, Camille Rancon, Justine Oliva, Elias Salem, Adrien Lion, and Maria Gaudino. "La diversité des agents pathogènes respiratoires bovins : faut-il de nouvelles valences vaccinales ?" Le Nouveau Praticien Vétérinaire élevages & santé 14, no. 51 (September 2022): 10–19. http://dx.doi.org/10.1051/npvelsa/2022051.
Full textPeletiri, I. C., E. I. Ikeh, G. M. Ayanbimpe, and E. Nna. "Molecular detection and characterization of bacteria from CSF samples of patients with suspected cerebrospinal meningitis in parts of northern Nigeria using metagenomic DNA extracts." African Journal of Clinical and Experimental Microbiology 22, no. 3 (July 2, 2021): 365–76. http://dx.doi.org/10.4314/ajcem.v22i3.8.
Full textNdiaye, D., L. Bachellier, A. Vuagnat, S. Sunder, J. Talarmin, V. Dubée, A. Lemaignen, and L. Bernard. "COVID-score : un outil de détection clinique des cas de COVID-19 en situation de co-circulation virale." Médecine et Maladies Infectieuses 50, no. 6 (September 2020): S30. http://dx.doi.org/10.1016/j.medmal.2020.06.447.
Full textVoisin, Guillaume, Yasmina Boussafir, and Delphine Jacqueline. "Comparaison Plaque et Dynaplaque. Résultats d’essais croisés en conditions maîtrisées." Revue Française de Géotechnique, no. 174 (2023): 1. http://dx.doi.org/10.1051/geotech/2023004.
Full textLan, Romain, Anne-Charlotte Galieri, Jean-Hugues Catherine, and Delphine Tardivo. "Le cancer oral : état des lieux et perspectives de santé publique." Santé Publique 35, HS1 (December 1, 2023): 93–105. http://dx.doi.org/10.3917/spub.hs1.2023.0093.
Full textFioramonti, X., C. Chrétien, C. Fenech, F. Liénard, S. Grall, R. Bergès, L. Pénicaud, and C. Leloup. "CO-48: Les canaux TRPC3 de l'hypothalamus jouent un rôle fondamental dans la détection cérébrale du glucose et l'homéostasie énergétique." Diabetes & Metabolism 42 (March 2016): A15. http://dx.doi.org/10.1016/s1262-3636(16)30066-0.
Full textBoukobza, M., A. Idbaih, I. Crassard, M. G. Bousser, and H. Chabriat. "CO-03 Détection IRM du thrombus au cours les thromboses veineuses cérébrales : intérêt de la séquence écho de gradient T2/T2*SW." Journal of Neuroradiology 32, no. 2 (March 2005): 77. http://dx.doi.org/10.1016/s0150-9861(05)83029-9.
Full textLoubet, P., G. Voiriot, M. Neuville, B. Visseaux, and J. F. Timsit. "Virus respiratoires dans les pneumonies associées aux soins." Médecine Intensive Réanimation 27, no. 3 (May 2018): 217–27. http://dx.doi.org/10.3166/rea-2018-0049.
Full textDissertations / Theses on the topic "Détection de CO₂"
Salman, Mayla. "Détection et signalisation du monoxyde de carbone chez des bactéries aérobies - Hémo-senseur RcoM-2 et réponses mycobactériennes au CO." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX076.
Full textThe toxic gas CO can act in low quantities as signaling molecule; detected by heme-based sensor proteins.The CO-dependent transcription factor RcoM-2 has a very high affinity for CO, while being insensitive to O₂. RcoM-2 binds to DNA only when CO is bound to heme. We characterized the heme-CO interaction in full-length RcoM-2 and compared it with the isolated heme domain RcoMH-2. RcoM-2 can bind CO with lower effective affinity than RcoMH-2. CO dissociates with a 20-fold higher rate than in RcoMH-2, where CO binding is almost irreversible. A small fraction of CO can escape from the protein, thus allowing RcoM-2 to act as CO sensor. The presence of the DNA binding domain influences the binding properties of CO to heme. Identification of the precise molecular origin of the dynamic properties must await the 3D structure RcoM-2.CO detection is crucial for Mtb, the infectious agent of tuberculosis that must overcome the host's defense mechanisms, including CO. The gene cor (rv1829) has been implicated in these processes. We have shown that Cor is a highly stable dimer that is able to stoichiometrically bind a heme cofactor, suggesting a potential function as direct CO sensor. A histidine residue was identified as potential heme ligand. The internal CO dynamics is very similar to other bacterial CO sensors. Cor exhibits DNA binding activity that depends on the presence of heme and CO, which is abolished in the H70A mutant. Our studies also showed that the transcriptional regulator Rv0081, induced in response to gaz changes, can bind to the predicted regulatory region of cor. The creation of a Δcor strain in the non- pathogenic model M. smegmatis continues and will be a first step towards transcriptomic analyzes
Henry, Lucas. "Sondes multimodales Re(CO)₃ pour la détection intracellulaire : synthèse, étude physico-chimique et sur cellules." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEE026.
Full textQuestions of intracellular detection and cell-mediated localization of transition metal complexes are major in the context of metal complex development in biology and medicine. A compound must reach its cellular target to be pharmacologi- cally active: the localization is therefore a key parameter of activity. To study it, it is necessary to have probes and cell imaging techniques. Metal carbonyls are ideal candidates for multimodal bioimaging in fluorescence, infrared and X-ray fluorescence imaging. As they have been developed as "Single Core Multimodal Probe for Imaging" (SCoMPI), this thesis deals with the development, the study and the use of a rhenium-tricarbonyl unit [LRe(CO)₃X] (L = pyridyl-1,2,3-triazole, X = Cl−) as X-ray fluorescence probe for cellular imaging. We conjugated the Re(CO)₃ graftable probe to compounds of interest (hyaluronic acid, ferrocifens) in order to study their penetration and location in cells or in the skin, and we modified Re(CO)3 conjugates by organelles targeting groups (TPP, peptide, etc.) in order to develop species that were characterized in biological context by different analytical techniques and imaged by different microscopy techniques
Khelladi, Djamel Eddine. "Co-évolution des contraintes OCL suite à l'évolution des métamodèles." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066335.
Full textModel-Driven Engineering (MDE) paradigm promotes the use of models and modeling languages during the development process aiming at a better quality and productivity. Metamodels are core components of any modeling language ecosystem to define structural aspects of a business domain. As a complement, the Object Constraint Language (OCL) is used to specify detailed aspects of the business domain, e.g. more than 750 constraints come with the UML metamodel. Unfortunately, metamodels are subject to a constant change and evolution which impacts the defined OCL constraints that may need to be co-evolved as well. Although several approaches have been proposed to detect metamodel changes during evolution and to use them to co-evolve OCL constraints. They still cannot detect a complete and a correct evolution trace of the metamodel while proposing a unique resolution per impacted OCL constraint whereas multiple and alternative ones can be applied. In this thesis, we propose an approach to detect metamodel changes during evolution while aiming at completeness and high precision. Our detection approach considers both atomic and complex changes during evolution. In addition, we propose a dedicated approach to co-evolve OCL constraints while considering alternative resolutions and ensuring that only the appropriate resolutions are proposed to the user for each impacted OCL constraint. Our validation shows on the one hand that a 100% recall is always reached in our case studies with an average precision of 70.75%, which is improved by our heuristics up to 91% and 100% in some cases. On the other hand, an average of 92% and 93% of respectively syntactically and semantically correct OCL co-evolution are reached in our case studies. Both approaches are implemented as plugins for the Eclipse IDE a wide-spread development environment for software developers. The plugins are under test by our industrial partners in the ANR MoNoGe project. This PhD resulted in eight published papers and three other papers are currently under submission/revision phase
Mao, Yuxiao. "Détection dynamique d'attaques logicielles et matérielles basée sur l'analyse de signaux microarchitecturaux." Thesis, Toulouse, INSA, 2022. http://www.theses.fr/2022ISAT0015.
Full textIn recent years, computer systems have evolved quickly. This evolution concerns different layers of the system, both software (operating systems and user programs) and hardware (microarchitecture design and chip technology). While this evolution allows to enrich the functionalities and improve the performance, it has also increased the complexity of the systems. It is difficult, if not impossible, to fully understand a particular modern computer system, and a greater complexity also stands for a larger attack surface for hackers. While most of the attacks target software vulnerabilities, over the past two decades, attacks exploiting hardware vulnerabilities have emerged and demonstrated their serious impact. For example, in 2018, the Spectre and Meltdown attacks have been disclosed, that exploited vulnerabilities in the microarchitecture layer to allow powerful arbitrary reads, and highlighted the security issues that can arise from certain optimizations of system microarchitecture. Detecting and preventing such attacks is not intuitive and there are many challenges to deal with: (1) the great difficulty in identifying sources of vulnerability implied by the high level of complexity and variability of different microarchitectures; (2) the significant impact of countermeasures on overall performance and on modifications to the system's hardware microarchitecture generally not desired; and (3) the necessity to design countermeasures able to adapt to the evolution of the attack after deployment of the system. To face these challenges, this thesis focuses on the use of information available at the microarchitecture level to build efficient attack detection methods.In particular, we describe a framework allowing the dynamic detection of attacks that leave fingerprints at the system's microarchitecture layer. This framework proposes: (1) the use microarchitectural information for attack detection, which can effectively cover attacks targeting microarchitectural vulnerabilities; (2) a methodology that assists designers in selecting relevant microarchitectural information to extract; (3) the use of dedicated connections for the transmission of information extracted, in order to ensure high transmission bandwidth and prevent data loss; and (4) the use of reconfigurable hardware in conjunction with software to implement attack detection logic. This combination (composing to the so-called detection module) reduces the performance overhead through hardware acceleration, and allows updating detection logic during the system lifetime with reconfiguration in order to adapt to the evolution of attacks. We present in detail the proposed architecture and modification needed on the operating system, the methodology for selecting appropriate microarchitectural information and for integrating this framework into a specific computer system, and we describe how the final system integrating our detection module is able to detect attacks and adapt to attack evolution. This thesis also provides two use-case studies implemented on a prototype (based on a RISC-V core with a Linux operating system) on an FPGA. It shows that, thanks to the analysis of microarchitectural information, relatively simple logic implemented in the detection module is sufficient to detect different classes of attacks (cache side-channel attack and ROP attack)
Marusic, Jean-Christophe. "Fabrication et caractérisation de capteurs potentiométriques à électrolyte solide pour la détection du CO¦2 gazeux." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0017/MQ46659.pdf.
Full textCherubini, Aurélien. "Utilisation des méthodes de polarisation spontanée et polarisation provoquée pour la détection de CO₂ en milieu poreux carbonaté." Thesis, Bordeaux 3, 2019. http://www.theses.fr/2019BOR30005/document.
Full textMinimally intrusive geophysical methods are required to characterize both the vadose zone of the Earth, hydrocarbon reservoirs and CO₂ sequestration. We investigate the impact of gaseous CO₂ on both electrical conductivity and electrokinetic properties of limestones under saturated and unsaturated conditions, using the spectral induced polarization and the self-potential methods. These data are contrasted with measurements performed on a Fontainebleau sandstone and data from the literature. That said, the dependence of a key parameter, the streaming coupling coefficient, with the saturation remains highly debated. Using the self-potential method, we explore the relationship between the streaming potential coupling coefficient, the capillary pressure curves and the permeability in carbonate rocks characterized by distinct textures. A new core flooding system is used to measure simultaneously both the relative permeability, the resistivity index and the streaming potential coupling coefficient in steady-state two-phase flow conditions as a function of the saturation with CO₂ or N₂. The results are compared with a recently developed theoretical model, which can accommodate either the Brooks and Corey or the van Genuchten models for the capillary pressure curves. Saturation was achieved with monovalent and divalent brines with ionic strength ranging from 1x10⁻³ Mol L⁻¹ to 1x10⁰ Mol L⁻¹. The magnitude of the coupling coefficient increases with decreasing ionic strength similarly to the trend observed for sandstones. The zeta potential has been calculated at full saturation using a modified version of the Helmholtz-Smoluchowski equation that accounts for surface electrical conductivity. Under atmospheric conditions, the magnitude of the zeta potential is decreasing with the increase of the ionic strength. We also investigate the effects of a CO₂ release and the calcite dissolution on the magnitude of the zeta potential. Finally, we use the spectral induced polarization method to determine the pore water conductivity effects on the complex electrical conductivity, the normalized chargeability and the main relaxation time during drainage in a clay free limestone. We also show evidences that these parameters could be considered as polarization parameters of the electrical double layer in the pore water conductivity range 10⁻³ - 10⁰ S m⁻¹
Remy, Bertrand. "Étude et réalisation d'un imageur actif laser à compression d'impulsion." Paris 11, 1986. http://www.theses.fr/1986PA112346.
Full textThe thesis describes the breadboard of an imaging CO₂ laser radar based upon the use of a CW waveguide single mode laser, heterodyne detection and chirp pulse compression. A theoretical model of the system is given: overall performance, angular, range and Doppler precisions are estimated, as well as the influence of heterodyne mixing, speckle, atmospheric turbulence and optical aberrations. An evaluation of several scanning devices is also given, that compares their performance as far as Doppler precision is concerned. Parametric optimization of this imaging system has 1ed to a total field of view of 0,5° x 1° (corresponding to 64 x 128 points). The 3 images Range-Doppler Velocity and Reflectivity are generated at a repetition rate of about 1,5 Hz. Field tests and experimental results confirm the theoretical investigations and help compare the relative interests of these new images in a wide range of applications
Philippe, Julien. "Technologie de fabrication et analyse de fonctionnement d'un système multi-physique de détection de masse à base de NEMS co-intégrés CMOS." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT099/document.
Full textDuring these last decades, Very Large Scale Integration (VLSI) techniques, well developed for transistors, have been used for the Micro ElectroMechanical Systems (MEMS) devices. Thanks to the combination of different physical properties (such as electronic, mechanical, optical etc.) the fabrication of various kinds of miniaturized sensors has been made possible. The sub-µm downscaling of MEMS has allowed the emergence of a new kind of devices called NEMS (for Nano ElectroMechanical Systems) and the possible use of the electromechanical systems in specific applications in which a high level of sensitivity and resolution is necessary, such as gas sensing, mass spectrometry and molecules recognition, to replace traditional bulky machines. Nevertheless, the use of these NEMS requires a CMOS electronic to enhance NEMS resonators readout and to implement closed-loop oscillators (e.g. phase-locked loop or self-oscillating loop) that provide real-time mass measurements. The integration of the electronic circuit with the resonators is a critical aspect for the fabrication of high performance sensors. The best way consists in monolithically processing these two parts on the same die allowing a size reduction of the sensor and an optimal signal transmission between the NEMS resonators and the CMOS circuit. In a first time, this thesis proposes to analyze the interest of this co integration from an electrical point of view. In a second time, this thesis deals with the development of a 3D co integration in which the nano resonators are fabricated above the CMOS circuit and the interconnections. The final part is focused on the layout design considerations for the implementation of a compact mass sensor based on a NEMS array co integrated with a CMOS
Khelladi, Djamel Eddine. "Co-évolution des contraintes OCL suite à l'évolution des métamodèles." Electronic Thesis or Diss., Paris 6, 2016. http://www.theses.fr/2016PA066335.
Full textModel-Driven Engineering (MDE) paradigm promotes the use of models and modeling languages during the development process aiming at a better quality and productivity. Metamodels are core components of any modeling language ecosystem to define structural aspects of a business domain. As a complement, the Object Constraint Language (OCL) is used to specify detailed aspects of the business domain, e.g. more than 750 constraints come with the UML metamodel. Unfortunately, metamodels are subject to a constant change and evolution which impacts the defined OCL constraints that may need to be co-evolved as well. Although several approaches have been proposed to detect metamodel changes during evolution and to use them to co-evolve OCL constraints. They still cannot detect a complete and a correct evolution trace of the metamodel while proposing a unique resolution per impacted OCL constraint whereas multiple and alternative ones can be applied. In this thesis, we propose an approach to detect metamodel changes during evolution while aiming at completeness and high precision. Our detection approach considers both atomic and complex changes during evolution. In addition, we propose a dedicated approach to co-evolve OCL constraints while considering alternative resolutions and ensuring that only the appropriate resolutions are proposed to the user for each impacted OCL constraint. Our validation shows on the one hand that a 100% recall is always reached in our case studies with an average precision of 70.75%, which is improved by our heuristics up to 91% and 100% in some cases. On the other hand, an average of 92% and 93% of respectively syntactically and semantically correct OCL co-evolution are reached in our case studies. Both approaches are implemented as plugins for the Eclipse IDE a wide-spread development environment for software developers. The plugins are under test by our industrial partners in the ANR MoNoGe project. This PhD resulted in eight published papers and three other papers are currently under submission/revision phase
Baumeyer, Julien. "Co-manipulation sûre d’un robot de protonthérapie." Thesis, Orléans, 2017. http://www.theses.fr/2017ORLE2015/document.
Full textThis PhD thesis takes place in a medical context of oncological treatments, more particularly in robotised protontherapy. The objective of this thesis, carried out under a CIFRE contract with LEONI CIA Cable Systems, is the development of a safe comanipulation control dedicated to a serial medical robot. This control law should allow an operator to intuitively and precisely manipulate a robot of high inertia for accurate patients positioning. The contributions of this thesis focus on the development and implementation of an admittance-controlled Orion robot from LEONI CIA Cable Systems and the comparison of three haptic devices, and on the other hand, on the development of a proprioceptive collision detection mechanism allowing the improvement of operational safety. Based on a review of the literature on compliant controls, we have developed and implemented an admittance control approach dedicated to the Orion robot, taking into account the discretization of the control by the controller specific to this robot. A comparison experiment on the robot allowed us to identify the haptic device best suited to the clinical case considered. Based on a state of the art of collision detection mechanisms analysis, a frequency approach of the modeling of the axial torque taking into account the high reduction ratios and different robot technology has been proposed. It allows us to finely model the torque theoretically provided by the motors ; The latter is then compared with the measurement of the torque actually produced in order to detect a possible collision