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Academic literature on the topic 'Spectrométrie de masse – Analyse informatique'
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Journal articles on the topic "Spectrométrie de masse – Analyse informatique"
Crunelle, S., J. L. Edmé, T. Perez, C. Boulenguez, R. Neviere, G. Briant, A. S. Tellart, A. Sobaszek, and R. Matran. "Analyse en spectrométrie de masse des condensâts d’air expiré." Revue des Maladies Respiratoires 23 (January 2006): 92. http://dx.doi.org/10.1016/s0761-8425(06)72347-6.
Full textFabritius, Marie, Christian Staub, and Christian Giroud. "Analyse des cannabinoïdes par spectrométrie de masse en mode tandem." Annales de Toxicologie Analytique 23, no. 1 (2011): 21–35. http://dx.doi.org/10.1051/ata/2011104.
Full textDelfau, J. L., and Ch Vovelle. "Analyse par spectrométrie de masse de flammes C2H2/O2 produisant des suies." Journal de Chimie Physique 82 (1985): 747–54. http://dx.doi.org/10.1051/jcp/1985820747.
Full textBastin, Eric, Jean-Louis Delfau, Marcelline Reuillon, and Christian Vovelle. "Analyse par spectrométrie de masse de la structure d’une flamme de diffusion C2H2/O2/AR." Journal de Chimie Physique 84 (1987): 415–20. http://dx.doi.org/10.1051/jcp/1987840415.
Full textPénicaut, B., C. Bonnefoy, C. Moesch, and G. Lachâtre. "Spectrométrie de Masse à Plasma couplé par induction (ICP-MS) Potentialités en analyse et en biologie." Annales Pharmaceutiques Françaises 64, no. 5 (September 2006): 312–27. http://dx.doi.org/10.1016/s0003-4509(06)75324-x.
Full textSOULIER, C., V. BOITEUX, P. CANDIDO, E. CAUPOS, M. CHACHIGNON, G. COUTURIER, X. DAUCHY, et al. "La spectrométrie de masse haute résolution pour la recherche de micropolluants organiques dans l’environnement." Techniques Sciences Méthodes 6, no. 6 (June 21, 2021): 43–54. http://dx.doi.org/10.36904/tsm/202106043.
Full textSéby, Fabienne, Jean Dumont, Christine Gleyzes, Mathieu Menta, Véronique Vacchina, and Maïté Bueno. "Analyse de formes chimiques et de nanoparticules dans les échantillons d’eau : méthodes analytiques, préconcentration et validation." Revue des sciences de l’eau 28, no. 1 (April 21, 2015): 27–32. http://dx.doi.org/10.7202/1030004ar.
Full textCornu, Marjorie, Boualem Sendid, Alexandre Mery, Nadine François, Mikulska Malgorzata, Valérie Letscher-Bru, Helena De Carolis, et al. "Détection d’un disaccharide (MSDS) par spectrométrie de masse. Analyse multicentrique de son intérêt pour le diagnostic des infections fongiques invasives." Journal de Mycologie Médicale 27, no. 3 (September 2017): e4-e5. http://dx.doi.org/10.1016/j.mycmed.2017.04.020.
Full textCirimele, Vincent, Matthieu Etter, Marion Villain, and Pascal Kintz. "Analyse des composés organiques volatiles dans l'air ambiant par couplage espace de tête – chromatographie en phase gazeuse / spectrométrie de masse après désorption chimique." Annales de Toxicologie Analytique 20, no. 2 (2008): 67–71. http://dx.doi.org/10.1051/ata/2009002.
Full textSaulnier-Talbot, Émilie, and Reinard Pienitz. "Isolation au postglaciaire d'un bassin côtier près de Kuujjuaraapik-Whapmagoostui, en Hudsonie (Québec) : une analyse biostratigraphique diatomifère." Géographie physique et Quaternaire 55, no. 1 (October 2, 2002): 63–74. http://dx.doi.org/10.7202/005662ar.
Full textDissertations / Theses on the topic "Spectrométrie de masse – Analyse informatique"
Lefévre, Soizic. "Caractérisation de la qualité des raisins par imagerie." Electronic Thesis or Diss., Reims, 2023. http://www.theses.fr/2023REIMS017.
Full textIdentifying the health conditions of the grapes at harvest time is a major issue in order to produce quality wines. To meet this issue, data are acquired by spectrometry, hyperspectral imaging and RGB imaging on grape samples during harvest.Several pre-treatments adapted to each type of data are applied such as normalization, reduction, extraction of characteristic vectors, and segmentation of useful areas. From an imaging point of view, the reconstruction in false colors of hyperspectral images, far from reality, doesn’t allow to label all the intra-class diversity. On the other hand, the visual quality of RGB imaging enables accurate class labelling. From this labelling, classifiers such as support vector machines, random forests, maximum likelihood estimation, spectral mapping, k-means are tested and trained on labelled bases. Depending on the nature of the data, the most effective is applied to whole images of grape clusters or crates of grapes of several grape varieties from different parcels.The quality indices obtained from RGB image processing are very close to the estimates made by experts in the field
Tirsoaga, Alina. "Analyse structurale d'endotoxines bactériennes par spectrométrie de masse." Paris 11, 2007. http://www.theses.fr/2007PA112002.
Full textEndotoxins are lipopolysaccharides (LPS) made up of a lipid - (called lipid A) and a sugar - chain, both characteristic of each bacterial species. We developed methods of structure analysis and a purification method representing an important improvement for studies of structure/activity relationships. The first one is a micro analytical method that can be applied to milligram quantities of bacteria. With it, one can obtain spectra of the lipid A in one day, instead of a week as for previous techniques. The second one leads to the determination of the structure and the positions of the fatty acids with a little amount of lipid A. This technology was applied to Citrobacter, an Enterobacterium causing nosocomial diseases. A LPS purification method gave highly purified samples suitable for biological tests. This method will give preparation having identical activities in different laboratories. We also have established the existence of new constituents on the lipid A of B. Bronchiseptica, from which the whooping cough originated. The presence of a glucosamine on the phosphate group(s) was demonstrated and its effect on the biological activities will be of high impact particularly on the activity of anti-bacterial peptides, as glucosamines neutralise the lipid A structure responsible for the endotoxic activities of LPS
Gilles, Isabelle. "Spectrométrie de masse et réactivité chimique." Montpellier 2, 1995. http://www.theses.fr/1995MON20080.
Full textDron, Julien. "Analyse fonctionnelle par spectrométrie de masse tandem : application aux aérosols organiques atmosphériques." Phd thesis, Université de Provence - Aix-Marseille I, 2008. http://tel.archives-ouvertes.fr/tel-00308753.
Full textDadi, Hala. "Analyse par spectrométrie de masse des tubulines et de l'hormone de croissance." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS582.
Full textThe tubulins are proteins involved in cellular processes that are essential for cell life. The tubulins are polymodified at their C-terminal extremities. Different techniques have been used to characterize the polymodifications of tubulins. However, some challenges remain in the fine identification of some structures. In fact, mass spectrometry ion mobility can separate ions of the same m/z ratio depending on their conformations. In the first part of this thesis, an ion mobility mass spectrometry analysis allowed the separation of two synthetic peptides that mimic the structure of C-terminal peptides of biglycylated α-tubulins. In order to extrapolate this type of experiment to the C-terminal peptides purified from biological tubulins, we employed an analytical process to analyze these peptides from purified brain tubulins. Growth hormone (GH) is an anabolic hormone and a doping agent used by athletes. The availability of rhGH in the black-market has continuously increased because of doping in sports. The natural and the biosynthetic hGH have identical peptidic sequences. So far, the valid hGH anti-doping tests by the world antidoping agency are based on immunological recognition. However, Immunoassays have their own limitations. Therefore, the next generation analysis of GH has to be more specific and accurate. In the second part of this thesis, mass spectrometry coupled to reversed phase chromatography was used to find chemical differences between the pituitary hGH and the rhGH. The pituitary extracted hGH is glycosylated whereas the biotech product is sugar free. The present work represents an opening towards a novel methodology for a novel hGH anti-doping test
Barrere, Caroline. "Analyse de polymères synthétiques par résonance magnétique nucléaire et spectrométrie de masse." Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10061/document.
Full textThis thesis work deals with two main analytical aspects of PEO-b-PS amphiphilic block copolymers, their structural characterization and their quantitation in mixture, using NMR and mass spectrometry. In a first part, a novel approach was developed for the determination of copolymer weight average molecular weight by PGSE NMR. The issue of MALDI mass analysis of PEO homopolymers functionalized with a labile nitroxide end-group for the purpose of nitroxide mediated polymerization of the PS block was also addressed. A multidisciplinary approach involving NMR, mass spectrometry and theoretical calculation gave rise to an efficient derivatization strategy aimed at allowing intact PEO adducts to be generated by MALDI. In addition, requirement for impurity quantitation in polymer samples led to the development of a rapid and accurate method using PGSE NMR. This approach, based on the measurement of magnetic relaxation times during PGSE experiments to enable signal intensity renormalization, evidenced the issue of transverse relaxation time estimation in the case of coupled spin systems. A novel NMR pulse sequence was hence proposed and successfully applied for accurate measurement of transverse relaxation times in a model case of a two-spin coupled system
Barrere, Caroline. "Analyse de polymères synthétiques par résonance magnétique nucléaire et spectrométrie de masse." Electronic Thesis or Diss., Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10061.
Full textThis thesis work deals with two main analytical aspects of PEO-b-PS amphiphilic block copolymers, their structural characterization and their quantitation in mixture, using NMR and mass spectrometry. In a first part, a novel approach was developed for the determination of copolymer weight average molecular weight by PGSE NMR. The issue of MALDI mass analysis of PEO homopolymers functionalized with a labile nitroxide end-group for the purpose of nitroxide mediated polymerization of the PS block was also addressed. A multidisciplinary approach involving NMR, mass spectrometry and theoretical calculation gave rise to an efficient derivatization strategy aimed at allowing intact PEO adducts to be generated by MALDI. In addition, requirement for impurity quantitation in polymer samples led to the development of a rapid and accurate method using PGSE NMR. This approach, based on the measurement of magnetic relaxation times during PGSE experiments to enable signal intensity renormalization, evidenced the issue of transverse relaxation time estimation in the case of coupled spin systems. A novel NMR pulse sequence was hence proposed and successfully applied for accurate measurement of transverse relaxation times in a model case of a two-spin coupled system
Carapito, Christine. "Vers une meilleure utilisation des données de spectrométrie de masse en analyse protéomique." Université Louis Pasteur (Strasbourg) (1971-2008), 2006. https://publication-theses.unistra.fr/public/theses_doctorat/2006/CARAPITO_Christine_2006.pdf.
Full textOliva, Mizar Francesca. "Analyse biochimique et par spectrométrie de masse d'un complexe ribonucléoprotéique d'export du VIH-1." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAV029/document.
Full textAn important step in the life cycle of human immunodeficiency virus (HIV) is the nuclear export of incompletely spliced viral transcripts, including the replicated viral RNA genome. This process is mediated by the viral RNA-binding protein Rev. In the nucleus, Rev recognizes unspliced and partially spliced viral transcripts by multimerizing on a 350-nucleotide intron sequence, the Rev-response element (RRE). Rev then recruits the host cell export factor CRM1 and the small GTPase Ran to form the RRE/Rev/CRM1/Ran export complex. Knowledge of the 3D architecture of this ribonucleoprotein complex would provide important insights into how unspliced viral RNA export is achieved. However, the molecular details of this complex are poorly understood. In particular, the stoichiometry of Rev and CRM1 molecules bound to the RRE is under debate.My Ph.D. project aims to investigate the architecture of the RRE/Rev/CRM1/Ran complex. As part of this work, I used biochemical and cell-based assays to characterize the interactions between CRM1 and Rev and between Rev and the RRE. The majority of my efforts focused on investigating these interactions by native mass spectrometry (MS), a powerful method for determining the stoichiometry of macromolecular complexes. I set up protocols for the large-scale preparation of a 66-nucleotide RRE fragment (IIABC) bearing a high-affinity Rev binding site, and adapted these for compatibility with native MS analysis. Because Rev tends to aggregate and precipitate in solution, I engineered a mutant form of Rev (Rev*) to overcome this problem. Analysis of IIABC/Rev* complexes by native gel electrophoresis confirms multimerization of Rev on the RNA. After extensive optimization, I obtained high-quality native MS spectra of these complexes, revealing that IIABC binds up to 6 Rev* monomers. Furthermore, I reconstituted a 4-species complex, IIABC/Rev*/CRM1/Ran, and succeeded in determining its mass and stoichiometry by native MS – a technically challenging task. Additional efforts at analyzing the intact RRE and complexes with wild-type Rev have also yielded informative spectra, while analysis of the intact RRE/Rev/CRM1/Ran holo-complex has had more limited success. These results illustrate the strengths and limitations of native mass spectrometry and its potential for future development as a tool for analyzing ribonucleoprotein complexes
Rhourri-Frih, Boutayna. "Analyse, classification et caractérisation de résines d'origine végétale par chromatographie et spectrométrie de masse." Thesis, Orléans, 2009. http://www.theses.fr/2009ORLE2054/document.
Full textThe aim of this research was to analyze and classify 31 natural resins using different analytical tools (HPTLC, LC-UV, LC-ELSD, LC-MS, GC-MS and NMR) in order to verify the link between the chemical composition of resins and their botanic belongs. Natural resins are mostly composed from triterpens that is the reason why development of sensitive liquid chromatography method hyphenated to mass spectrometry detection was necessary. APPI and APCI were proved to be the most adequate sources of ionization for triterpens mass spectrometry analysis. Triterpens have low polarity index and contain number of isomers making their extraction and separation difficult in liquid chromatography. To improve their extraction and separation in their natural matrix, different parameters were considered. Finally, three triterpens derivatives were described for the first time in Manilkara bidentata resin and their bio-activity was tested on human skin cells cultures
Books on the topic "Spectrométrie de masse – Analyse informatique"
1960-, Brown H. Alex, ed. Lipidomics and bioactive lipids: Lipids and cell signaling. Amsterdam, Netherlands: Elsevier, 2007.
Find full text1935-, Rosen Joseph D., ed. Applications of new mass spectrometry techniques in pesticide chemistry. New York: Wiley, 1987.
Find full textMartin, Frearson, Prichard F. Elizabeth 1937-, and ACOL, eds. Mass spectrometry: Analytical chemistry by open learning. Chichester: Published on behalf of ACOL by Wiley, 1987.
Find full textGiorgio, Montaudo, and Lattimer Robert, eds. Mass spectrometry of polymers. Boca Raton, Fla: CRC Press, 2002.
Find full textTime-of-flight mass spectrometry: Instrumentation and applications in biological research. Washington, DC: American Chemical Society, 1997.
Find full textWatson, J. Throck. Introduction to mass spectrometry: Instrumentation, applications, and strategies for data interpretation. 4th ed. Hoboken, N.J: John Wiley, 2007.
Find full text1952-, Snyder A. Peter, American Chemical Society. Division of Analytical Chemistry., and American Chemical Society Meeting, eds. Biochemical and biotechnological applications of electrospray ionization mass spectrometry. Washington, DC: American Chemical Society, 1995.
Find full textL, Burlingame A., ed. Mass spectrometry: Modified proteins and glycoconjugates. Amsterdam: Elsevier Academic Press, 2005.
Find full textL, Burlingame A., ed. Biological mass spectrometry. Amsterdam: Elsevier Academic Press, 2005.
Find full textSheng-Meng, Wang, and Canfield Dennis V. 1943-, eds. Quantitation and mass spectrometric data of drugs and isotopically labeled analogs. Boca Raton: Taylor & Francis, 2010.
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