Tesis sobre el tema "Analyse biologique in vitro"
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Gagnepain, Anne. "Fécondation in vitro : synthèse clinique, biologique, épidémiologique, législative et éthique ; méta-analyse des essais thérapeutiques". Montpellier 1, 1989. http://www.theses.fr/1989MON11258.
Texto completoLaborie, Stéphanie. "Exposition humaine aux perturbateurs endocriniens par inhalation : caractérisation de la contamination de l’air intérieur par analyses chimiques et biologiques in vitro". Thesis, Paris, EPHE, 2015. http://www.theses.fr/2015EPHE3059/document.
Texto completoThe objective of this project was to develop a bio-analytical approach leading to the assessment of the inherent hazard of the indoor air multi-contamination. Chromatographic methods combined with mass spectrometry were developed and validated for 62 target molecules known or suspected as endocrine-disrupting (ED) compounds. The ED potential was assessed by cellular bioassays measuring perturbations of transcriptional activity. The data showed that the predominant families of compounds in indoor air were in the following descendant order: phthalates > musks > alkylphenols > parabens. The ED contaminants were mainly present in gaseous phase, and the most contaminated locations were the day nursery and the house. An estrogenic, thyroid and anti-androgenic potential was attributed to indoor air. In agreement with its contamination profile, the biological activity of the latter was concentrated predominantly in the gaseous phase, and tended to be higher in the day nursery and the house. An effect-directed analysis (EDA) was carried out to identify the target chemicals responsible for the ED effects of indoor air. The following chemicals were identified as being potentially responsible for the observed ED effects: phthalates, methyl-paraben, alkylphenols, cypermethrin and synthetic musks. This work provides both knowledge about the inherent hazard of the indoor air multi-contamination and exposure data useful in health risk assessment
Germaini, Marie-Michèle. "Elaboration de céramiques phosphocalciques pour l'ingénierie tissulaire osseuse : étude de l’influence des propriétés physico-chimiques des matériaux sur le comportement biologique in vitro". Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0003/document.
Texto completoThis transdisciplinary thesis, carried out in collaboration with the SPCTS laboratory (sciences of ceramic processes and surface treatment) and EA 3842 (Cellular homoeostasis and pathologies) of the University of Limoges, is a research project at the interface between biology and chemistry and was devoted to the study of the influence of the physico-chemical properties of calcium phosphate bioceramics on their biological behavior in vitro.The exploration of the processes of interaction between materials and cells remains a major scientific issue, both from a fundamental and applied point of view for the development of highperformance biomaterials. The ultimate objective is to optimize the therapeutic efficiency of phosphocalcic ceramics as substitute materials for bone regeneration.The first part of the thesis is a general bibliographic review presenting the current issues tackled with the clinical needs and limitations of current studies. Knowledge of the biology of healthy bone tissue as well as the regulatory aspects of the bone remodeling process was also discussed in this chapter. It includes also a bibliographic overview of biomaterials and bone regeneration.Chapter 2 relates to the synthesis and the physico-chemical characterization of ceramic materials. HA (hydroxyapatite: Ca10 (PO4) 6 (OH) 2, SiHA (silicated hydroxyapatite: Ca10 (PO4) 5.6 (SiO4) 0.42 (OH) 1.6 and CHA (carbonated hydroxyapatite: Ca9.5 (PO4) 5.5 (CO3) 0.48 (OH) 1.08 (CO3) 0.23, ceramics each with two different microstructures : dense or porous, have been elaborated and thoroughly characterized (porosity, surface topography, wettability, zeta potential, grain size, pore size and distribution, specific surface area). Chapter 3 describes the experimental approach used for the biological evaluation of the interactions between materials and cells. Biological analyzes were performed with two different cell lines. The pre-osteoblastic MC3T3-E1 cell line and the RAW 264.7cell line of monocytes / macrophages, precursors of the steoclasts, (very important for the bone aspects, but less often explored than the osteoblastic lines in the literature). Finally, Chapter 4 reports and comments on the biological results obtained in this work. All biomaterials evaluated are biocompatible, nevertheless, the porous CHA biomaterial was the most promising of the six variants of biomaterials tested
Hamdi, Dounia. "Analyse des effets directs de rayonnements ionisants à différents TELs dans un modèle expérimental in vitro de cartilage humain sain et pathologique". Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS047/document.
Texto completoHadrontherapy using carbon ions has many advantages due to physical and biological properties of this type of particle. Chondrosarcoma, a cartilaginous radio-resistant tumor, has been successfully treated using carbon ions. However, potential side effects to the surrounding healthy tissues are still poorly known. This project aims to study the direct effects of carbon ions in a 3D model of healthy articular cartilage and chondrosarcoma close to human homeostasis, in order to provide new tools for the evaluation of the relative biological effectiveness (RBE).The first part of the project was dedicated to the evaluation of carbon ions-induced impact on articular cartilage in the context of chondrosarcoma treatment. Compared to X-rays, the relative biological effectiveness of intermediate-LET carbon ions scored 2.6 in 2D monolayer culture. This was correlated with a stronger induction of cellular senescence. However, this differential effect was not reproduced using a 3D model of articular cartilage. Thus, the relative biological effectiveness of accelerated ions is probably overestimated using monolayer cultures (2D), compared to 3D. In the second part of this work, we developed a 3D chondrosarcoma model for hadronbiology studies. Protein extraction and immunohistochemistry protocols were developed. A new RBE evaluation method based on γ -H2AX repair kinetic in 3D, was proposed
Höche, Nicole [Verfasser] y Daniela [Akademischer Betreuer] Dieterich. "In vitro und in vivo Analyse des synaptischen Fukosyl-Proteoms der Ratte / Nicole Höche. Betreuer: Daniela Dieterich". Magdeburg : Universitätsbibliothek, 2015. http://d-nb.info/1078066434/34.
Texto completoHöche, Nicole Verfasser] y Daniela C. [Akademischer Betreuer] [Dieterich. "In vitro und in vivo Analyse des synaptischen Fukosyl-Proteoms der Ratte / Nicole Höche. Betreuer: Daniela Dieterich". Magdeburg : Universitätsbibliothek, 2015. http://nbn-resolving.de/urn:nbn:de:gbv:ma9:1-6853.
Texto completoSchamari, Isabella [Verfasser]. "Bioinformatische und in-vitro-Analyse der frs-Biosynthesegencluster von Cand. Burkholderia crenata und Chromobacterium vaccinii / Isabella Schamari". Bonn : Universitäts- und Landesbibliothek Bonn, 2019. http://d-nb.info/1218301414/34.
Texto completoKluth, Marianne [Verfasser], Lutz [Akademischer Betreuer] Schmitt y Anselmino Verena [Akademischer Betreuer] Keitel-. "Molekulare in vitro Analyse des humanen ABC Transporters MDR3 / Marianne Kluth. Gutachter: Verena Keitel- Anselmino. Betreuer: Lutz Schmitt". Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2015. http://d-nb.info/1066815526/34.
Texto completoFleury, Christophe. "Etude des collagènes (types I et IV) chez le mollusque gastéropode Haliotis tuberculata et analyse de leur expression lors du processus de réparation de la coquille : activité biologique in vitro d’une protéine collagénique recombinante (fibroblastes humains)". Caen, 2006. http://www.theses.fr/2006CAEN2079.
Texto completoSequencing the various molluscan collagen genes is an essential prerequisite to decipher their cellular and physiological function in many processes such as biomineralization in the mollusc Haliotis tuberculata. Two abalone cDNA encoding collagen α chains have been sequenced. The first one, named α1(IV), is composed of 5000 base pairs coding for a 1777 amino acids protein whose C-terminal domain shares 69% identity with human and murine α3(IV) chains. The second cDNA, called α1(I), was partially sequenced but its C-terminal domain shares 34 to 37% identity with invertebrate and vertebrate fibrillar collagens. Although the expression profile of these transcripts revealed they are both ubiquitous, α1(I) is predominantly expressed in the mantle while α1(IV) is mainly found in the mantle and haemocytes, both of which are important for biomineralization. In addition, a 5-fold increase in transcriptional ratio α1(IV)/α1(I) was observed in mantle edge 4 days after experimental lesion. This result suggests that cells synthesizing type IV collagen could be implicated in shell regeneration process. The close identity between α1(IV) C-terminal domain and the vertebrate homolog led us to produce, purify and test in vitro the biological effects of a recombinant protein corresponding to this region on human cells. This molecule increased fibroblastic proliferation by 69% and doubled collagen synthesis
Chrétien, Denis. "Apports de la cryomicroscopie électronique à l'étude de microtubules assemblés in-vitro". Grenoble 1, 1991. http://www.theses.fr/1991GRE10040.
Texto completoIbrahim, Hany. "Développement de méthodes analytiques : détermination de médicaments dans les fluides biologiques et études de stabilité de nouveaux composés antiplasmodiaux in vitro". Toulouse 3, 2008. http://www.theses.fr/2008TOU30283.
Texto completoThe analysis of compounds and/or metabolites in biological fluids needs very sensitive and selective methods for the detection and quantification in pharmacological and clinical studies. The first part of the work concerns the determination of NSAIDs in pharmaceuticals and human serum by dual-mode gradient HPLC and fluorescence detection. In addition a comparison between HPLC with conventional fluorescence, and µHPLC with laser induced fluorescence detection was carried out to determine chloroquine and quinine in human serum, using very small injected samples. This resulted in the most sensitive method known to date (LOD < 2 femtomoles). In the second part of the work, the biotransformation of new chemical entities (NCEs) showing promising antiplasmodial activity has been studied with several analytical systems including LC-MS methods. The stability of the NCEs in vitro and their interactions with human red blood cells have been investigated to begin to understand their mechanisms of action. Tagged molecules have been used to confirm the interpretation of the mass spectra and the first step in the biotransformation pathway
Domes, Katrin [Verfasser] y Franz [Akademischer Betreuer] Hofmann. "Analyse der Funktion des C-Terminus des Cav1.2 L-Typ Calciumkanals in vitro und im Mausmodell / Katrin Domes. Betreuer: Franz Hofmann". München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2011. http://d-nb.info/1015170153/34.
Texto completoSigrist, Salome Iphigenie [Verfasser]. "Analyse der Auswirkungen mechanischer Stimulation auf die enchondrale Knochenentwicklung in einem in vitro Organkulturmodell muriner fetaler Metatarsalknochen / Salome Iphigenie Sigrist". Berlin : Freie Universität Berlin, 2011. http://d-nb.info/1026358221/34.
Texto completoCrevier-Denoix, Nathalie. "Etude segmentaire des proprietes mecaniques du tendon flechisseur superficiel du doigt du cheval : analyse comparative in vitro sur tendons sains et pathologiques". Paris 11, 1996. http://www.theses.fr/1996PA112394.
Texto completoLanglois, Isabelle. "Analyse de la différenciation de la granulosa de brebis et de truie in vitro : aspects cellulaire, moléculaire et génétique". Toulouse 3, 1995. http://www.theses.fr/1995TOU30005.
Texto completoSchmalzbauer, Ruediger. "Vergleichende Analyse der Gerstmann-Straeussler-Scheinker-Syndrom-assoziierten Mutation A117V mit der neuen pathogenen Mutation G114V des humanen Prion-Proteins in vivo und in vitro". Diss., lmu, 2003. http://nbn-resolving.de/urn:nbn:de:bvb:19-16939.
Texto completoLaqua, Anja [Verfasser], Gerrit [Akademischer Betreuer] Schüürmann, Gerrit [Gutachter] Schüürmann y Thomas [Gutachter] Braunbeck. "Reaktive Toxizität in vitro : Bioassay-Analyse organischer Elektrophile und Proelektrophile mit den Ciliaten Tetrahymena pyriformis / Anja Laqua ; Gutachter: Gerrit Schüürmann, Thomas Braunbeck ; Betreuer: Gerrit Schüürmann". Freiberg : Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2014. http://d-nb.info/1220837482/34.
Texto completoConrad, Rebecca [Verfasser], Stefan [Gutachter] Wiese y Petra [Gutachter] Wahle. "Etablierung eines in vitro Modells zur Analyse von extrazellulärer Matrix vermittelten Signalen in spinalen Motoneuronen / Rebecca Conrad ; Gutachter: Stefan Wiese, Petra Wahle ; Fakultät für Biologie und Biotechnologie". Bochum : Ruhr-Universität Bochum, 2013. http://d-nb.info/1205971904/34.
Texto completoDoisy, Anne. "Analyse de la migration et de la déformation cellulaires : application à l'étude du rôle de la protéine CD9/MRP1 dans le carcinome colorectal". Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10229.
Texto completoVerna, Jean-Marc. "Analyse "in vitro" de l'innervation sélective du derme et de l'épiderme chez l'embryon de poulet : rôle de divers facteurs d'origine matricielle et cellulaire". Grenoble 1, 1987. http://www.theses.fr/1987GRE10023.
Texto completoPrelle, Carola [Verfasser], Rolf [Akademischer Betreuer] Marschalek y Robert [Akademischer Betreuer] Fürst. "Onkogene Transformationsprozesse der t(4;11)-assoziierten Leukämie: Expression von AF4•MLL in vitro und in vivo und Analyse kooperierender Ereignisse / Carola Prelle. Gutachter: Rolf Marschalek ; Robert Fürst". Frankfurt am Main : Univ.-Bibliothek Frankfurt am Main, 2014. http://d-nb.info/1054690820/34.
Texto completoDugnolle, Patrick. "Outils mathématiques appliqués à l'analyse stoechiométrique d'une séquence vidéo-microscopique de cicatrisation in vitro en contraste de phase". Université Joseph Fourier (Grenoble), 2000. http://www.theses.fr/2000GRE10031.
Texto completoBusseau, Isabelle. "Transposition des elements i chez drosophila melanogaster : etude moleculaire de mutations induites par la dysgenesie hybride et analyse des fonctions d'un element i modifie in vitro". Clermont-Ferrand 2, 1988. http://www.theses.fr/1988CLF21136.
Texto completoSola, Brigitte. "Transformation in vitro des cellules de la lignee myeloblastique par le virus leucemogene murin de friend (f-mulv) : analyse des mecanismes moleculaires de cette transformation". Paris 7, 1987. http://www.theses.fr/1987PA077242.
Texto completoLafargue, Christophe. "Analyse biologique quantitative non instrumentée". Bordeaux 2, 1994. http://www.theses.fr/1994BOR2P052.
Texto completoCharvet, Igor. "Développement des neurones dopaminergiques et environnement matriciel : analyse in vivo et in vitro du rôle des protéoglycannes dans la mise en place des voies mésostriatales chez le rat". Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10117.
Texto completoDaubas, Philippe. "Etude de l'expression differentielle de genes de proteines contractiles au cours de la myogenese : donnees concernant leur structure, leur localisation et leur analyse fonctionnelle". Paris 7, 1987. http://www.theses.fr/1987PA077106.
Texto completoCecchini, Tiphaine. "Caractérisation de bactéries par analyses protéomiques en spectrométrie de masse". Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1064.
Texto completoThanks to MALDI-TOF mass spectrometry, identification of isolated bacteria is now possible within a few minutes. But doctors also need to rapidly know the phenotype of resistance of the bacteria. Indeed, the patient mortality rate increases when the antibiotherapy is not appropriate. However, MALDI-TOF instruments are not able to analyze antibacterial resistance rapidly and comprehensively.Today, 6 to 24 hours are nedded for antibiotic susceptibility testing. When combining a liquid chromatography and a mass spectrometer with electrospray ionization (LC-MSMS), the detection of resistance biomarkers was possible within 1 to 2 hours. Using a Selected Reaction Monitoring (SRM) method, resistance mechanisms to beta-lactams, methicillin, glycopeptides and fluoroquinolones were detected in strains within 30 minutes. Tens of resistance determinants can be analyzed in a single multiplexed assay, with high specificity and sensitivity. Illustrated by the study of multifactorial resistance in Acinetobacter baumannii, the technology allows furthermore a quantitative analysis, which is of great value for some resistance mechanisms. Similarly, we identified virulent strains of enterohemorrhagic Escherichia coli by targeting toxins and serotype biomakers in the same assay. Mass spectrometry offered deeper bacterial characterization than conventional serotyping using polyclonal antibodies. However, despite all these favorable prospects, LC-MS/MS remains today far from reaching a routine use in microbiological hospital laboratories. Instruments are too expensive and the technology is too cumbersome for a daily in vitro diagnostic use. Waiting for a more suitable use, mass spectrometry could yet advantageously complement current molecular technologies. Today, the gold standard to study bacteria at molecular level is next generation sequencing. However, as demonstrated during this work, gene annotation remains imperfect. For tens of euros and few hours of analysis, peptides identified by mass spectrometry analysis of a bacteria might improve scaffold assembly and gene detection. Moreover, mass spectrometry gives an accurate protein quantitation and brings a new analytical dimension, potentially closer to the phenotype than molecular techniques. In conclusion, LC-MS/MS mass spectrometry could be an attractive complementary, or alternative technology in a near future, to conventional molecular biology techniques for deep characterization of bacteria
Pecher, Julien. "Synthèse, analyse structurale et activité biologique d'insulinomimétiques". Amiens, 2006. http://www.theses.fr/2006AMIED004.
Texto completoThis work of thesis consisted in synthesizing antidiabetic peptides with aiming, determining their three-dimensional structure and studying their biological activity during in vitro and in vivo biological essay. Studied peptides derive either from chains A and B isolated from human peptide insulin or described in the literature like having a biological activity. The pharmacological effect of peptides was tested on cellular models and an animal model. The structural studies carried out by NMR, CD and molecular dynamics made it possible to propose a three-dimensional model for two of these peptides. A sequential approach implying the rebuilding of the disulphide bridge starting from derived the sulfhydryl was followed during simulations of about a microsecond. Lastly, a general method of impact study intramolecular disulphide bridge in the folding of peptides was developed by molecular dynamics in the presence of implicit solvent "GB"
BORZAKIAN, STEEVES. "L'infection persistante du poliovirus in vitro : etude biologique et moleculaire". Paris 7, 1993. http://www.theses.fr/1993PA077329.
Texto completoKhelili, Smaïl. "Synthèse et étude pharmacologique d'activateurs de canaux K+/ATP dérivés des 1,2,4-benzothiadiazine-1,1-dioxydes". Grenoble 1, 1993. http://www.theses.fr/1993GRE10210.
Texto completoSangely, Matthieu. "Dégradation biologique des polychlorobiphényles". Thesis, Toulouse, INPT, 2010. http://www.theses.fr/2010INPT0094/document.
Texto completoSoil is a complex interface between all compartments of the environment. Their pollution contributes to the spread of many pollutants. PCBs are persistent toxic compounds in the environment. Widely used especially in dielectric oils, they now contaminate many industrial floors. Heat treatment of these soils is very expensive and can cause the emission of dioxins. The objective of this work is to study a biological treatment process for the degradation of PCBs in soils. Biological degradation of PCBs has been observed in the presence of two cultured organisms, Burkholderia xenovorans and Phanerochaete chrysosporium, confirming their technological potential under aerobic conditions. Under anaerobic conditions, a microbial community with the ability to degrade PCBs was developed. A study of the diversity of 16S rDNA gene within this community has identified the species in this community. An analysis of life cycle assess the environmental performance of two methods for treating soils contaminated with PCBs, one thermal and one biological. This analysis quantifies the environmental benefit of the biological process compared with the heat treatment
Simon, Alain. "Calluna vulgaris : analyse phytochimique : évaluation biologique d'un phytoconstituant, l'acide ursolique". Limoges, 1992. http://www.theses.fr/1992LIMO303C.
Texto completoDiop, Ousmane. "Analyse mathématique de la dynamique de réseaux de régulation biologique". Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASG013.
Texto completoIn this thesis, we are interested in the qualitative analysis of the dynamics of two biological cycles that are central in eukaryotic cells, the cell division cycle and the circadian clock. For that purpose, we use asynchronous Boolean networks that provide an adapted qualitative framework. In these networks, cycles are captured by complex attractors containing hundreds of states. A new method for the analysis of such complex attractors is proposed. It is based on the construction of a summary graph of the attractor, enabling the comparison between the attractor's trajectories and qualitative properties of the biological cycle. The method is illustrated on a cell cycle model from the literature and of a circadian clock model we built from an existing continuous model. In both models our method proves to be efficient to visualize the attractor's structure and to compare it with the biological cycle. By combining the summary graph with a Markov chain, proportions of time spent in each phase are estimated. By combining it with a Boolean inference technique, we show how to locally adjust the asymptotic dynamics of the model in order to force specific dynamical properties. These two applications show the interest of our method in the modeling and analysis of cellular regulatory networks
Zhang, Ganggang. "Tests des composés de nacre sur l'activité des ostéoblastes et leur identification". Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0051/document.
Texto completoWith many exceptional qualities (biocompatible and osteogenic), nacre represents a natural biomaterial as a bone substitute. However, the osteogenic compounds in nacre are not yet known. Our work aims at the identification of the osteogenic compounds in nacre. The ESM (soluble ethanol matrix) is an extract of nacre that is shown to be osteogenic. From the ESM, we have tried several approaches to target and identify these compounds. Thanks to the coupling of MC3T3-E1 cells and the human osteoarthritis osteoblasts, we demonstrated that the cationic part of the ESM is osteogenic, without interaction with the anionic part. Calcium plays a role in the osteogenic activity of the ESM. Then, we created a cell line stably expressing a plasmid containing an osteogenic reporter gene (ATDC5 pMetLuc2 ColX promoter). Thanks to this cell line, we found out that the lipids and sugars in the ESM have an osteogenic effect. The peptides precipitated by TCA are also demonstrated to be osteogenic, which have led to their partial identification by LC-MS. These results allow us to move farther and faster towards the identification of osteogenic compounds in nacre and the applications of nacre in clinical orthopaedics
Valayannopoulos, Vassili. "Caractérisation fonctionnelle et pharmacologique de mutations du transporteur de la créatine (SLC6A8) in vitro et chez des patients atteints du déficit cérébral en créatine". Paris 5, 2011. http://www.theses.fr/2011PA05T021.
Texto completoCreatine (Cr) is required for the utilization of ATP-derived energy at sites of high-energy utilization (muscle, brain, and heart). Mental retardation coupled with epilepsy, speech and behavior disorders are clinical hallmarks of the brain creatine transporter (SLC6A8) deficiency syndrome. Treatment trials with Cr and its precursors have been proven in most cases unable to treat efficiently the disease. Various types of molecular defects including truncating, splice and missense mutations have been described. The first aim of this work was to study the functional and pharmacological properties of 4 non truncating SLC6A8 mutations causing cerebral Cr deficiency syndrome including 2 not previously reported. I used 2 in vitro systems, patients’ fibroblasts and the heterologous expression system in Xenopus oocytes, to study the electrophysiological properties of the 4 mutants. Mutant transporters were completely inactive in all aspects studied despite normal expression and localization. In parallel, I studied the characteristics of 6 patients affected with SLC6A8 deficiency treated for 2. 5 years by Cr and its precursors L-Arg and L-Gly with no efficacy. I also studied the pharmacological effects of Cr and 4 Cr analogs. Among them, GPA showed electrophysiological properties similar to creatine whereas a phosphocreatine derivative, PCrMGX, showed partial activity. In conclusion, our data establish that these SLC6A8 mutations are responsible for equivalent severe functional impairment of the Cr transporter independent from the type of the molecular defect. We also conclude that these models may be used in the future to identify and study the therapeutic potential of new molecules
LIU, XUE-WU. "Etude du comportement physiologique et biologique d'algues marines en culture in vitro". Paris 6, 1991. http://www.theses.fr/1991PA066217.
Texto completoVignes, Jean-Pascal. "Transplantation hépatique : analyse rétrospective de l'évolution biologique en période post-opératoire". Bordeaux 2, 1989. http://www.theses.fr/1989BOR23092.
Texto completoLaplume, Sylvie. "Analyse biologique de la salive et applications dans les domaines cliniques". Paris 5, 1996. http://www.theses.fr/1996PA05P075.
Texto completoEstaben, Maxime. "Analyse et commande par logique floue d'un procédé biologique de dépollution". Perpignan, 1997. http://www.theses.fr/1997PERP0301.
Texto completoFacy, Patrice. "Lectines nucleaires d'une lignee cellulaire tumorale humaine : analyse biologique et biochimique". Orléans, 1990. http://www.theses.fr/1990ORLE2008.
Texto completoOuellet, Charles. "Évaluation biologique in vitro d'inhibiteurs de la stéroïde sulfatase ayant un effet SERM". Master's thesis, Université Laval, 2013. http://hdl.handle.net/20.500.11794/25169.
Texto completoMasotti, Véronique. "Etude anatomique, chimique et activité biologique du Xylopia aethiopica (Dun. ) Rich. Du Bénin". Aix-Marseille 3, 1997. http://www.theses.fr/1997AIX30031.
Texto completoLebret, Nelly. "L'ammoniac biologique et ses dérivés : analyse et limitation dans la vie domestique". Toulouse, INPT, 1992. http://www.theses.fr/1992INPT043G.
Texto completoBonneau, Stephane. "Chemins minimaux en analyse d’images : nouvelles contributions et applications à l’imagerie biologique". Paris 9, 2006. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=2006PA090062.
Texto completoIntroduced first in image analysis to globally minimize the geodesic active contour functionnal, minimal paths techniques are robust tools for extracting open and closed contours from images. Minimal paths are computed by solving the Eikonal equation on a discrete grid with an efficient algorithm called Fast Marching. In this thesis, we present novel approaches based on minimal paths. The interest of these techniques is illustrated by the analysis of biological images. This thesis consists of three parts. In the first part, we review the relevant litterature in boundary-based deformable models and minimal paths techniques. In the second part, we propose a new approach for automatically detecting and tracking, in sequences of 2D fluorescence images, punctual objects which are intermittently visible. Trajectories of moving objects, considered as minimal paths in a spatiotemporal space, are retrieved using a perceptual grouping approach based on front propagation in the 2D+T volume. The third part adresses the problem of surface extraction in 3D images. First, we introduce a front propagation approach to distribute a set of points on a closed surface. Then, we propose a method to extract a surface patch from a single point by constructing a dense network of minimal paths. We finally present an extension of this method to extract a closed surface, in a fast and robust manner, from a few points lying on the surface
Fippo, Fitime Louis. "Modélisation hybride, analyse et vérification quantitative des grands réseaux de régulation biologique". Thesis, Ecole centrale de Nantes, 2016. http://www.theses.fr/2016ECDN0016.
Texto completoBiological Regulatory Networks (BRNs) are usually used in systems biology for modelling, understanding and controlling the dynamics of different biological functions (differentiation, proliferation, proteins synthesis, apoptose) inside cells. Those networks are enhanced with experimental data that are nowadays more available which give an idea on the dynamics of BRNs components. Formal analysis of such models fails in front of the combinatorial explosion of generated behaviours despite the fact that BRNs provide abstract representation of biological systems. This thesis handles hybrid modelling, the simulation, the formal verification and control of Large Biological Regulatory Networks. This modelling is done thanks to stochastic automata networks, thereafter to Process Hitting by integrating time-series data. Firstly, this thesis proposes a refining of the dynamics by estimation of stochastic and temporal (delay) parameters from time-series data and integration of those parameters in automata networks models. This integration allows the parametrisation of the transitions between the states of the system. Then, a statistical analysis of the traces of the stochastic simulation is proposed to compare the dynamics of simulations with the experimental data. Secondly, this thesis develops static analysis by abstract interpretation in the automata networks allowing efficient under- and over-approximation of quantitative (probability and delay) reachability properties. This analysis enables to highlight the critical components to satisfy these properties. Finally, taking advantage from the previous developed static analyses for the reachability properties in the qualitative point of view, and from the power of logic programming (Answer Set Programming), this thesis addresses the domain of control of system by proposing the identification of bifurcation transitions. Bifurcations are transitions after which the system can no longer reach a state that was previously reachable
Attoui, Houssam. "Etude biologique et moleculaire du genre coltivirus (doctorat : chimie, environnement et sante)". Aix-Marseille 2, 1998. http://www.theses.fr/1998AIX2658U.
Texto completoPERRIN, CHRISTELE. "Methodologie pour l'analyse quantitative en imagerie microscopique conventionnelle et a fluorescence. Application a l'etude de la proliferation et de l'expression du recepteur a l'egf dans des cellules tumorales mammaires". Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10198.
Texto completoCrova, Philippe. "Analyse biologique pre-hospitaliere des desequilibres acido-basique et metabolique des arrets circulatoires". Lyon 1, 1994. http://www.theses.fr/1994LYO1M110.
Texto completoAubry, Carine. "Synthèse, analyse structurale et activité biologique d'analogues rigides d'un antagoniste de l'octadécaneuropeptide ODN". Rouen, 2003. http://www.theses.fr/2003ROUES002.
Texto completoODN is a member of the family of peptides (endozepines), able to link up with benzodiazepine receptors, and with a new receptor, not again characterized. Relationship-activity studies carried out on many synthesized analogs of ODN have proved that octapeptide (OP) Ct of ODN, had the same activity to ODN itself. In the same time, the first complete antagonist of the new receptor, corresponding to cyclic OP with a D-Leucine in 5 position has been synthesized. This modified OP has been studied in NMR, and it had been proved that it exist under two forms due to the cis-trans isomery induced by the proline. In a first time, we synthesized severals proline analogs, and then, introduced them in OP, modified en 5 position, in order to prevent the isomerization process induced by the proline. The obtained pseudo-peptides, have been analyzed by NMR spectroscopy, and, tested on rat astrocytes in order to know their potential activity