Letteratura scientifica selezionata sul tema "Spectroscopie – Appareils et matériel"
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Articoli di riviste sul tema "Spectroscopie – Appareils et matériel":
BERTHELOT, P. "Désinfection du matériel et des appareils utilisés par le réanimateur". Réanimation 14, n. 4 (giugno 2005): 294–301. http://dx.doi.org/10.1016/j.reaurg.2005.04.007.
Guivaudon, Pierre. "« L’appareil de l’explorateur n’existe pas. »". Photographica, n. 2 (3 maggio 2021): 90–109. http://dx.doi.org/10.54390/photographica.435.
Masson, Alexandre, Frédéric Villard, Manolito Finger, Philippe DeGottrau e Marie-Claire Gaillard. "Utilisation du smartphone dans la sémiologie clinique de la dystrophie épithéliale de Cogan". Klinische Monatsblätter für Augenheilkunde 240, n. 04 (aprile 2023): 603–7. http://dx.doi.org/10.1055/a-2026-1049.
Polo-Martin, Bárbara. "The Accuracy of Urban Maps in Spain through GIS: The Example of Burgos from the Nineteenth to the Twentieth Century". Cartographica: The International Journal for Geographic Information and Geovisualization 56, n. 3 (29 settembre 2021): 236–50. http://dx.doi.org/10.3138/cart-2020-0008.
Beau, Aurélien, Denis Bossard e Sarah Gebeile-Chauty. "Les appareils orthodontiques collés doivent-ils être déposés systématiquement avant un examen d’imagerie par résonance magnétique (IRM) ?" L'Orthodontie Française 88, n. 2 (giugno 2017): 131–38. http://dx.doi.org/10.1051/orthodfr/2017004.
Daunay, Sarah, Isabelle Breton-Torres, Pierre Leclercq e Patrick Jammet. "Accès aux soins face à l’enjeu de la rééducation maxillo-faciale dans les dyspraxies oro-faciales – Enquête auprès des orthodontistes en France". Revue d'Orthopédie Dento-Faciale 54, n. 4 (novembre 2020): 381–92. http://dx.doi.org/10.1051/odf/2020039.
Carton, L., F. Auger, N. Durieux, M. Petrault, J. Labreuche, D. Allorge, O. Cottencin, N. Simon, R. Bordet e B. Rolland. "Effet longitudinal d’une administration aiguë d’éthanol sur le GABA et le glutamate : une étude en spectroscopie par résonance magnétique in vivo chez le rat". European Psychiatry 30, S2 (novembre 2015): S116. http://dx.doi.org/10.1016/j.eurpsy.2015.09.222.
Lebon, Matthieu. "Caractérisation des ossements chauffes en contexte archéologique - étude comparative de matériel moderne et fossile par spectroscopie infrarouge". Palethnologie, n. 2 (1 gennaio 2010). http://dx.doi.org/10.4000/palethnologie.8856.
Nyamba, Isaïe, Alexis M. W. Nembot, Charles B. Sombié, Hermine Zimé Diawara, Josias B. G. Yaméogo e Anna Lechanteur. "Utilisation du polyéthylène glycol 8000 comme plastifiant pour le développement de dispersions solides à base d’acide ellagique et d’Eudragit® EPO par extrusion à chaud". Journal Africain de Technologie Pharmaceutique et Biopharmacie (JATPB) 2, n. 3 (20 dicembre 2023). http://dx.doi.org/10.57220/jatpb.v2i3.122.
Admin, Admin, YEKPE AHOUANSOU Patricia, ADJADOHOUN Sonia, LEGONOU Christelle, ADJOVI Boris, NGAMO Gabriel, SAVI de TOVE Kofi-Mensa, BIAOU Olivier e BOCO Vicentia. "État des lieux de la radioprotection du personnel de services d’imagerie médicale du sud Benin en 2019". Journal Africain d'Imagerie Médicale (J Afr Imag Méd). Journal Officiel de la Société de Radiologie d’Afrique Noire Francophone (SRANF). 12, n. 4 (17 giugno 2021). http://dx.doi.org/10.55715/jaim.v12i4.165.
Tesi sul tema "Spectroscopie – Appareils et matériel":
Canpont, Fabienne. "Développement de la spectrométrie à décharge luminescente radiofréquence : application à l'étude de matériaux conducteurs et isolants". Lyon 1, 1993. http://www.theses.fr/1993LYO10165.
Guay, Marianne. "Utilisation de la spectroscopie de fluorescence pour la vérification du nettoyage d'un ingrédient pharmaceutique actif sur les surfaces des équipements de production". Master's thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/28220.
Cleaning verification is used to assess the cleanliness of pharmaceutical process equipment. Cleanliness is established when the concentration of the residue of a pharmaceutical ingredient is lower than an acceptance limit. The method used to perform this verification consists of collecting a sample using a swab, and to analyze it using high performance liquid chromatography. The issue with this method is that it can take up to 2 days before the results are obtained, and before the equipment can be released for the production of another batch of drugs. Therefore, there is an opportunity to develop a new analytical method to quantify cleanliness in real-time without sampling (contactless). The new method investigated in this thesis uses fluorescence for direct quantification of ibuprofen residue. In this proof of concept, the impact of various parameters on the fluorescence signal was assessed. The best way to prepare the standards and how to analyze them with the instrument (the TraC) were determined. Following the verification of a first calibration curve using in situ data collection, the equipment was modified to allow the evaluation of equipment with an acceptance limit lower than the quantification limit of the TraC. The plant tests also revealed that the TraC always gives a higher concentration than the traditional method. An upgraded unit was calibrated, and the limit of quantification was lowered. It was established that the method is accurate (recovery is between 85 and 115%) and precise (relative standard deviation is lower than 5%), and that the excipients studied have no impact on the signal. Calibration curves were also built for aluminum, bronze, polyethylene and brass. Finally, the proof of concept for the use of the TraC for the cleaning verification of ibuprofen was demonstrated, and it is recommended to implement the method at a first plant.
Yin, Tiangang. "Modélisation 3D du transfert raidatif pour simuler les images et données de spectroradiomètres et Lidars satellites et aéroportés de couverts végétaux et urbains". Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30044/document.
Remote Sensing (RS) data depend on radiation interaction in Earth landscapes and atmosphere, and also on instrumental (spectral band, spatial resolution, field of view (FOV),...) and experimental (landscape/atmosphere architecture and optical properties,...) conditions. Fast developments in RS techniques require appropriate tools for validating their working principles and improving RS operational use. Radiative Transfer Models (RTM) simulate quantities (bidirectional reflectance; BRDF, directional brightness temperature: BTDF, LiDAR waveform...) that aim to approximate actual RS data. Hence, they are celebrated tools to simulate RS data for many applications: preparation and validation of RS systems, inversion of RS data... Discrete Anisotropic Radiative Transfer (DART) model is recognized as the most complete and efficient RTM. During my PhD work, I further improved its modeling in terms of accuracy and functionalities through the modeling work mentioned below. 1. Discretizing the space of radiation propagation directions.DART simulates radiation propagation along a finite number of directions in Earth/atmosphere scenes. Classical methods do not define accurately the solid angle centroids and geometric shapes of these directions, which results in non-conservative energy or imprecise modeling if few directions are used. I solved this problem by developing a novel method that creates discrete directions with well-defined shapes. 2. Simulating images of spectroradiometers with finite FOV.Existing RTMs are pixel- or image-level models. Pixel-level models use abstract landscape (scene) description (leaf area index, overall fraction of shadows,...) to calculate quantities (BRDF, BTDF,...) for the whole scene. Image-level models generate scene radiance, BRDF or BTDF images, with orthographic projection of rays that exit the scene onto an image plane. All models neglect the multi-directional acquisition in the sensor finite FOV, which is unrealistic. Hence, I implemented a sensor-level model, called converging tracking and perspective projection (CTPP), to simulate camera and cross-track sensor images, by coupling DART with classical perspective and parallel-perspective projection. 3. Simulating LiDAR data.Many RTMs simulate LiDAR waveform, but results are inaccurate (abstract scene description, account of first-order scattering only...) or require tremendous computation time for obtaining accurate results (e.g., Monte-Carlo (MC) models). With a novel quasi-MC method, DART can provide accurate results with fast processing speed, for any instrumental configuration (platform altitude, LiDAR orientation, footprint size...). It simulates satellite, airborne and terrestrial multi-pulse laser data for realistic configurations (LiDAR position, platform trajectory, scan angle range...). These data can be converted into industrial LiDAR format for being processed by LiDAR processing software. A post-processing method converts LiDAR waveform into photon counting LiDAR data, through modeling single photon detector acquisition. 4. In-flight Fusion of LiDAR and imaging spectroscopy.DART can combine multi-pulse LiDAR and cross-track imaging spectroscopy (hyperspectral sensor...). It is a 2 sources (sun, LiDAR laser) and 1 sensor (LiDAR telescope) system. First, a LiDAR multi-pulse acquisition and a sun-induced spectro-radiometer radiance image are simulated. Then, the LiDAR FOV regions projected onto the ground image plane are segmented in the spectro-radiometer image, which is also projected on the ground image plane. I applied it to simulate solar noise in LiDAR signal, and to the fusion of LiDAR data and spectro-radiometer images. To further improve accuracy when simulating actual LiDAR and spectro-radiometer, DART can also import actual acquisition configuration (platform trajectory, view angle per spectro-radiometer pixel / LiDAR pulse). Moreover, I introduced multi-thread parallelization, which greatly accelerates DART simulations
Diop, Aboubakar. "Méthodes de traitement du signal pour la quantification en spectroscopie RMN : estimateur de signal et prédiction linéaire". Lyon 1, 1993. http://www.theses.fr/1993LYO10131.
Telouk, Philippe. "Développement de la spectrométrie ICP-MS dans les domaines de l'archéologie et de la géologie : utilisation de l'ablation laser". Lyon 1, 1993. http://www.theses.fr/1993LYO10310.
Bégoin, Lilian. "Analyse de modules spirales industriels d'ultrafiltration de fluides laitiers. Physico-chimie du nettoyage de membranes en polyéthersulfone d'ultrafiltration de lait écrémé". Rennes 1, 2004. http://www.theses.fr/2004REN10042.
Daigle, Jean-François. "Probing contaminated aerosol clouds using remote filament induced breakdown spectroscopy". Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25599/25599.pdf.
Remote Filament Induced Breakdown Spectroscopy (R-FIBS) was used for probing a cloud of aqueous aerosols containing a mixture of dissolved metallic salts. We demonstrated experimentally that it can be used as a sensitive sensing technique to remotely retrieve the composition of microdroplets in clouds located at a distance. In fact, fluorescence from all the metallic ions dissolved was observed. Moreover, these spectrally narrow atomic transitions excited by the low density plasma did not show any signal overlap. These characteristic spectra demonstrate that R-FIBS can be used to simultaneously recognize and distinguish every single metallic constituent dissolved inside such a cloud. The technique has been successfully tested for long range field test of 70 m with an aerosol cloud of droplets containing sodium chloride.
Denneval, Charline. "Design, synthèse et évaluation de contrastophores bimodaux pour l'imagerie par absorption à deux photons et par tomographie par émission de positons". Thesis, Rouen, INSA, 2014. http://www.theses.fr/2014ISAM0012/document.
The purpose of this subject has been the synthesis of a bimodal probe using TPA–PET techniques for a potential application in biological imaging.In this context, we have synthesized a new range of A–π –D fluorophores incorporating diazine (p-deficient heterocycle) as electron-withdrawing moiety, N,N-dimethylaniline as electron-donating part and fluorene as p-conjugated linker. In order to increase the conjugation along the scaffold, ethynyl and/or triazole bridges have been introduced on both sides of the fluorene. The UV/Vis and photoluminescence properties have been measured. Further to those results two-photon absorption cross-section of our fluorophores (dTPA) has been obtained. Following these promising results, hydrophilic compounds using PEG groups have been prepared and photoluminescence properties have been carried out. In order to use the boron center as a site for radiofluorination, the synthesis of "BODIPY-like" probes has been considered. A new series of pyrimidine and triazole ligand have been synthesized but the corresponding boron complexes haven’t been obtained
Kim, Yonghwi. "Near real-time reconciliation of geochemical data acquired with handheld spectroscopic devices : Application to volcanogenic massive sulphide (VMS) deposit from the Iberian Pyrite Belt". Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0027.
Mineral exploration focused on deeply concealed targets at depth requires effective techniques applicable in the field in order to identify ore-forming systems on a large scale and pathfinders to locate ore on a smaller scale. According to the rapid development of portable equipment in recent years, the importance of near real-time analysis in the field has been increasing by helping fast decision-making support before laboratory requests.Spectroscopic analysis using individual equipment has been widely used in the exploration of mineral resources, but it is rare to apply integrated data from several techniques to characterize “vectors”, which provide variations in lithology, geochemistry, mineralogy, and mineral chemistry. In addition, it is even rarer if the combination of spectral data is obtained from various portable instruments. Therefore, this study aims at reconciling geochemical data acquired from portable spectroscopic devices in order to determine the best geochemical information from each technique applied by combining the mineralogical and elemental information. Elemental and mineralogical data are provided in this study by six portable techniques: (i) elemental analyses such as XRF and LIBS for major, trace, and light elements, and (ii) mineralogical analyses such as Raman, VNIR-SWIR, MIR, and XRD to constrain rock-forming, ore, and alteration minerals.The final objective of this study is to identify vectors to the ore by applying the reconciled multi-spectral data obtained from the “real” sample in the Elvira volcanogenic massive sulfide (VMS) deposit. To achieve this, step-by-step procedures were carried out: (i) methodological understanding of each technique, (ii) establishment of a spectral database consisting of naturally monomineralic minerals, (iii) design of a decision tree to classify by mineral or mineral classes based on diagnostic bands, and mineral identification and quantification of (iv) carbonate and (v) phyllosilicate minerals (i.e., trioctahedral chlorites and dioctahedral micas), which are indicators of the target deposit.Several limitations of portable spectroscopy were confirmed based on the device itself and the geological environment in the Elvira deposit. Nevertheless, portable spectroscopy is effective in identifying the presence and compositional changes of various minerals from heterogeneous rock samples. Therefore, spectroscopic analysis on-site can be one of the vectoring tools to determine the implication for ore mineralization in hidden ore explorations
Péry, Emilie. "Spectroscopie bimodale en diffusion élastique et autofluorescence résolue spatialement : instrumentation, modélisation des interactions lumière-tissus et application à la caractérisation de tissus biologiques ex vivo et in vivo pour la détection de cancers". Electronic Thesis or Diss., Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL079N.
This research activity aims at developing and validating a multimodal spectroscopy method in elastic scattering and autofluorescence to characterize biological tissues in vitro and in vivo. It is articulated in four axes. At first, instrumentation is considered with the development, the engineering and the experimental characterization of a fibers bimodal, multi-points spectrometry system allowing the acquisition of spectra in vivo (variable distances, fast acquisition). Secondly, the optical properties of tissues are modelled with the development and the experimental validation on phantoms of a photons propagation simulation algorithm in turbids media and multi-fluorescent. Thirdly, an experimental study has been conducted ex vivo on fresh and cryopreserved arterial rings. It confirms the complementarity of spectroscopic measurements in elastic scattering and autofluorescence, and validates the method of multi-modality spectroscopy and the simulation of photons propagation algorithm. Results have well proved a correlation between rheological and optical properties. Finally, one second experimental study in vivo related to a pre-clinical tumoral model of bladder has been carried out. It highlights a significant difference in diffuse reflectance and/or autofluorescence and/or intrinsic fluorescence between healthy, inflammatory and tumoral tissues, on the basis of specific wavelength. The results of not supervised classification show that the combination of various spectroscopic approaches increases the reliability of the diagnosis
Libri sul tema "Spectroscopie – Appareils et matériel":
Maharaj, H. P. Appareils d'analyse aux rayons X - exigences et recommandations en matière de sécurité. Ottawa, Ont: Direction de l'hygiène du milieu, 1994.
Spohel, Ursula. 1000 exercices et jeux de gymnastique aux agrès. Paris: Vigot, 1987.
Canada, Canada Industrie. La normalisation et l'homologation des appareils radio et dispositifs électroniques utilisés au Canada. Ottawa, Ont: Industrie Canada, 1998.
Barué, Gérard. Télécommunications et infrastructure: Liaisons hertziennes, spatiales, optiques. Paris: Ellipses, 2003.
René, Bouillot. Minolta 7000. Paris: Montel, 1985.
Ltd, Marbek Resource Consultants, Canada Ressources naturelles Canada e Canada. Division de l'énergie renouvelable et électrique., a cura di. Les systèmes éoliens autonomes: Guide de l'acheteur. Ottawa, Ont: Ressources naturelles Canada, 2000.
Hsieh, Esther. Development of a portable spectroscopic sensor to measure wood and fibre properties in standing mountain pine beetle-attacked trees and decked logs. Victoria, B.C: Pacific Forestry Centre, 2006.
Cannat, Guillaume. Le guide du ciel: Les instruments & le guide de l'astronomie de loisir. Prades-le-Lez: AMDS éd., 2012.
Basso, Luis. Guide d'utilisation de la palangre flottée en monofilament. Paris: Rivière, 1988.
Thos. Brown & Co., a cura di. Brown's hay loader, without an equal in the Dominion: Will elevate one ton of hay from the windrow as clean as usually done with the hand fork in five minutes .. [S.l: s.n., 1985.