Auswahl der wissenschaftlichen Literatur zum Thema „Complexe d’Au(I)“
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Zeitschriftenartikel zum Thema "Complexe d’Au(I)"
Bouka Dipelet, Ulrich Gaël, Charles Doumenge, Jean Joël Loumeto, Jacques Florence, Christelle Gonmadje und Doyle Mckey. „Des confusions entre espèces préjudiciables à la gestion durable des essences forestières : l’exemple des acajous d’Afrique (Khaya, Meliaceae)“. BOIS & FORETS DES TROPIQUES 339 (17.04.2019): 17. http://dx.doi.org/10.19182/bft2019.339.a31714.
Der volle Inhalt der QuelleSfairi, Youssef, Mohamed Najib Al Feddy, Issam Jadrane, Abdelaziz Abbad und Lahcen Ouahmane. „Réponses des plantules du cyprès de l’Atlas, Cupressus atlantica Gaussen, à l’inoculation de mycorhize arbusculaire en provenance de diverses origines dans l’ouest du Haut Atlas au Maroc“. BOIS & FORETS DES TROPIQUES 337 (26.11.2018): 27. http://dx.doi.org/10.19182/bft2018.337.a31634.
Der volle Inhalt der QuelleDufour, Magali, Louise Nadeau und Sylvie R. Gagnon. „Tableau clinique des personnes cyberdépendantes demandant des services dans les centres publics de réadaptation en dépendance au Québec : étude exploratoire“. Santé mentale au Québec 39, Nr. 2 (15.12.2014): 149–68. http://dx.doi.org/10.7202/1027837ar.
Der volle Inhalt der QuelleHoffman, Paul F. „The Origin of Laurentia: Rae Craton as the Backstop for Proto-Laurentian Amalgamation by Slab Suction“. Geoscience Canada 41, Nr. 3 (29.08.2014): 313. http://dx.doi.org/10.12789/geocanj.2014.41.049.
Der volle Inhalt der QuellePIEL, S., D. NEYENS, A. PENASSO, J. SAINTE-MARIE und F. SOUILLE. „Modélisation des remontées de chlorures le long d’un fleuve pour une optimisation de la gestion de la ressource“. Techniques Sciences Méthodes, Nr. 12 (20.01.2021): 33–51. http://dx.doi.org/10.36904/tsm/202012033.
Der volle Inhalt der QuelleCAUSSE, J., und O. THOMAS. „Intérêt de la mesure de la qualité des cours d’eau à très haute résolution pour une meilleure gestion des bassins versants“. Techniques Sciences Méthodes, Nr. 4 (20.04.2020): 13–18. http://dx.doi.org/10.36904/tsm/202004013.
Der volle Inhalt der QuelleSEIDL, M., B. T. C. TRINH, H. BRET, L. MOULIN, J. BARON und G. HUBERT. „Réseau d’eau non potable parisien et valorisation des eaux d’exhaure, entre limites techniques et jeux d’acteurs complexes“. Techniques Sciences Méthodes, Nr. 12 (20.01.2020): 131–53. http://dx.doi.org/10.36904/tsm/201912131.
Der volle Inhalt der QuellePuijalon, Sara, Soraya Rouifed, Mélanie Thiébaut, Barbara Lamberti-Raverot und Florence Piola. „Dispersion par les cours d’eau des propagules végétatives et sexuées du complexe d’espèces Reynoutria“. Sciences Eaux & Territoires Numéro 27, Nr. 1 (2019): 34. http://dx.doi.org/10.3917/set.027.0034.
Der volle Inhalt der QuelleCorrigan, David, Natasha Wodicka, Christopher McFarlane, Isabelle Lafrance, Deanne Van Rooyen, Daniel Bandyayera und Carl Bilodeau. „Lithotectonic Framework of the Core Zone, Southeastern Churchill Province, Canada“. Geoscience Canada 45, Nr. 1 (20.04.2018): 1–24. http://dx.doi.org/10.12789/geocanj.2018.45.128.
Der volle Inhalt der QuelleLABAT, Frederic. „Diptères comme outil d’évaluation de l’état du corridor rivulaire – premières expérimentations sur des cours d’eau du Massif central, et comparaison avec des cours d’eau de Bretagne et des Pyrénées“. BIOM - Revue scientifique pour la biodiversité du Massif central 3, Nr. 1 (12.10.2022): 52–67. http://dx.doi.org/10.52497/biom.v3i1.303.
Der volle Inhalt der QuelleDissertationen zum Thema "Complexe d’Au(I)"
Pascaretti, Mathieu. „Catalyse synergique οr/silicium par activatiοn d’οrganοsilanes et d’hydrοsilanes au mοyen de cοmplexes d’Au(Ι) : dévelοppements et applicatiοns“. Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMLH01.
Der volle Inhalt der QuelleSince the early 2000s, gold catalysis has developed particularly well in organic chemistry, offering new highly efficient synthetic methods, generally under very mild conditions. These advances have also led to abundant use in glycoscience, but despite important breakthroughs, the application of gold catalysis in glycochemistry is typically limited to conventional modes of sugar donor activation, in which the gold complex remains strictly confined to the role of a σ- or π-Lewis acid. The research work presented through this manuscript tends to introduce a new paradigm in gold-catalysed glycosylation reactions, by developing catalytic alkynylation reactions in which the gold complex should overcome the intrinsic difficulties of these couplings by contributing to the simultaneous activation of the sugar donor and the alkyne aglycone, based on an original gold/silicon synergistic catalysis strategy. The ideal combination of gold catalyst and counterion was sought (L and X) to achieve optimum catalytic reactivity and stereochemical control both for the alkynylation reaction of simple saturated glycosides and for the alkynylation of glycals. The discovery of a major impact of a hitherto unexploited Au(I) complex counterion in synergistic gold/silicon catalysis associated with a strongly deactivating phosphine has made it possible to extend the field of application of synergistic gold/silicon catalysis beyond the alkynylation of glycosides
Bouhrara, Mohamed. „Préparation de matériaux catalytiques bien définis à site unique de type complexe carbénique N-hétérocyclique d’Au(I) : application à la réaction d’addition des alcools sur les alcynes“. Thesis, Lyon 1, 2010. http://www.theses.fr/2010LYO10193.
Der volle Inhalt der QuelleN-heterocyclic carbene ligands have been described as interesting alternatives to tertiary phosphines in term of bonding and reactivity and have been therefore extensively studied as metallocarbene promotors. As a result, a large variety of homogeneous metal-NHC complexes have been developed and their impressive catalytic properties have been studied. However, such highly active homogeneous catalysts suffer from fast deactivation and separation problems from the reaction products. The immobilization of such complexes could overcome these drawbacks and that is the reason why this area has attracted much attention in the last ten years. The most common strategy for complexes immobilisation involves covalent grafting oforganosilane precursors onto solid support surfaces, via reaction with surface OH groups. Although this method provides a convenient way for introducing all kinds of organic moieties into solids, it does not permit the control of either their distribution in the final material or the nature of the surface species. The alternative methodology, to classical grafting, developed in this PhD project, is based on the design of organic-inorganic hybrid mesostructured materials containing NHC units along their pore channels or into their walls and the subsequent coordination on the NHC units with the Au organometallic precursor. These materials were prepared by sol-gel process using a templating route, via co-hydrolysis and co-polycondensation of an organotrialkoxysilane precursor and tetraethoxysilane. This strategy permits a control of: the ligands distribution into the silica matrix, the nature of the silica surface species and the organic moieties concentration. All the solids, from the starting hybrid material to the Au-NHC containing one, were fully characterized using various techniques: nitrogen adsorption-desorption at 77 K, transmission electron microscopy, small angle X-Ray diffraction, solid state NMR spectroscopy and elementary analysis. After screening the catalytic performances of these Au-NHC containing materials in several catalytic reactions (selective oxidation of alcohols, Suzuki cross-coupling and olefins diboration), their high catalytic activity in alcohols addition to alkynes reactions prompted us to study more deeply their catalytic behaviour (and that of their homogeneous homologues) in the reaction of methanol addition to 3-hexyne. To the best of our knowledge, it is the first use in catalysis of gold Nheterocyclic carbene complexes in this reaction
Lamberti-Raverot, Barbara. „Stratégies de propagation du complexe d’espèces Fallopia par les cours d’eau : rôle des traits de dispersion et de colonisation“. Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1055.
Der volle Inhalt der QuelleWatercourses are efficient dispersal vectors for plant species colonising riverbanks, including those that are not primarily adapted to this dispersal mode. In the case of invasive species, the study of plant traits participating to dispersal and colonization, and their variability, is important to understand the spread potential of one species in the invasive area, as well as its adaptive potential to new environments. The invasive complex Fallopia displays a high genotypic diversity and highly colonises riverbanks. Dispersal of sexual and vegetative propagules could explain their colonization success. The aim of this work is to study the dispersal strategies by watercourses displayed by this terrestrial taxon.This work has quantified the dispersal and colonization potential of Fallopia propagules through the study of their floatation ability and their viability after water exposure. This work demonstrated that rhizomes do not float unlike stem fragments and achenes. Floatability is related to morphological traits. Achene germination in water may increase the floatation time. Il was also demonstrated that viability was only reduced after 3 weeks of water exposure. The variability observed for the traits allows to identify different spread strategies in this taxon. Stem and achene regeneration in water enables a rapid installation in the riverbanks, while rhizomes regenerate after deposition in the riverbank, if environmental conditions are favourable to the development and the survival of the plant. Even if variability of propagule traits is continuous, it is possible to identify, in particular for achenes, individuals that have the capacity to disperse over long distances, and that could participate to the progression of the invasive front of the taxon. These results demonstrated that dispersal and colonization abilities of Fallopia propagules might participate to the spread potential of the species through watercourses
Ben, Ayoub Mohamed Wajdi. „Dispositifs de mesure de constantes diélectriques dans les matériaux humides : vers une meilleure traçabilité de la mesure de l'humidité des solides“. Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0228/document.
Der volle Inhalt der QuelleThis thesis is part of a European research project called METfnet (Metrology for Moisture in Solids).In industry, the electrical sensors for measuring the water content in the solids are generally mono-frequency and the operating frequency is chosen arbitrarily.The sensitivity to the water content depends on the type of material and the existing water bounds. On the one hand, the dielectric relaxation frequency of water in the liquid state is located in the microwave band. On the other hand, the dielectric relaxation frequency of the bound water depends on the material, but it is known that it’s situated in the radio frequency band.Based on this hypothesis, the aim of this thesis is to analyze the frequency sensitivity with respect to water bonds in solids by using as an intermediate parameter the complex dielectric permittivity.In the first phase of the work, we validate metrologically two instruments: capacitive and coaxial, both of them are developed at CETIAT for measuring the dielectric constant. The two measuring cells were validated to measure the complex dielectric permittivity of liquids, solids and wet products in the [1 MHz - 2 GHz] band and a comparison with the EpsiMu® tool developed by the Fresnel Institute was carried out. In the second phase, we experimentally study wet materials by coupling electromagnetic characterization with the thermo-coulometric method, which selectively measures and distinguishes existing water bounding forms in a solid.At the end of this phase, a parametric study on the complex dielectric spectrum was carried out to lead to the identification of sensitivities with respect to the existing water fractions
Simone, Antonietta. „Tailoring Complex Network Theory for Water Distribution Networks Analysis“. Doctoral thesis, 2021. http://hdl.handle.net/11589/219588.
Der volle Inhalt der QuelleEverything around us is connected: individuals in society, infrastructures in cities, cells in the brains, interacting species in ecosystems, etc... These connections allow us to represent all complex real systems as networks and help us to understand how the world really works. Novel approaches and metrics, that often go beyond traditional analysis tools, are made available to model and interpret an impressive number of natural and anthropogenic phenomena, i.e., to investigate and understand the networks behavior. We are talking about the Complex Networks Theory (CNT), a new challenge that fascinates and involves the scientific community. In this thesis, we aim to contribute to the study of Water Distribution Networks (WDNs), particularly to the relationship between connective structure and dynamics occurring in these complex networks, tailoring classic CNT tools. The study starts from the basic concepts proposed by the CNT, shows the limits they present when applied to infrastructural systems such as WDNs, strongly constrained spatially, and proposes their tailoring. Then, we suggest a new complex network-based framework to model and simulate WDNs accounting for their intrinsic peculiarities and spatial limits enhancing the WDNs analysis and providing more reliable tools to identify the actual behaviour of these hydraulic systems. Accordingly, we propose new metrics and models, supported by efficient calculation tools.
Tout autour de nous est connecté : les individus dans la société, les infrastructures dans les villes, les cellules du cerveau, les espèces en interaction dans les écosystèmes, etc. Ces connexions nous permettent de représenter tous les systèmes réels complexes comme des réseaux nous aidant à comprendre comment le monde réel fonctionne vraiment. Nouvelles approches et métriques, qui vont souvent au-delà des outils d'analyse traditionnels, sont mises à disposition pour modéliser et interpréter un nombre impressionnant de phénomènes naturels et anthropiques, c'est-à-dire explorer et comprendre les caractéristiques des réseaux. Nous parlons de la Théorie des Réseaux Complexes (CNT), un nouveau défi qui fascine et engage la communauté scientifique. Dans cette thèse, nous entendons contribuer à l'étude des réseaux de distribution d'eau (WDN), en particulier à la relation entre la structure connective et la dynamique se produisant dans ces réseaux complexes, en adaptant les classiques outils de la CNT. L'étude part des concepts de base proposés par la CNT et montre les limites qu'ils présentent lorsqu'ils sont appliqués à des systèmes infrastructurelles tels que les WDN, fortement contraints spatialement, et propose leur adaptation. Ainsi, nous proposons un nouveau cadre pour modéliser et simuler les WDN en tenant compte de leurs particularités intrinsèques et de leurs limites spatiales en améliorant leur analyse et en fournissant des outils plus fiables pour identifier le comportement réel de ces systèmes hydrauliques. À cet égard, nous proposons des nouvelles métriques et modèles, soutenus par des outils de calcul efficaces.
Buchteile zum Thema "Complexe d’Au(I)"
„Lettre de M. de Vol...... à M. D’Am.....“ In Œuvres complètes de Voltaire (Complete Works of Voltaire) 60B, herausgegeben von Helder Mendes Baiao, 69–104. Voltaire Foundation, 2018. http://dx.doi.org/10.2307/jj.10704322.10.
Der volle Inhalt der QuelleBertram, Amy. „Queer Tyranny and Intertextuality in Gouttes d’eau sur pierres brûlantes : François Ozon Pays Homage to Master Fassbinder“. In ReFocus: The Films of François Ozon, 15–34. Edinburgh University Press, 2021. http://dx.doi.org/10.3366/edinburgh/9781474479912.003.0002.
Der volle Inhalt der QuelleBerichte der Organisationen zum Thema "Complexe d’Au(I)"
Moro, Leben, Jennifer Palmer und Tabitha Hrynick. Considérations clés : Répondre aux inondations au Soudan du Sud par le biais du Nexus Humanitaire- Développement-Paix. Institute of Development Studies, Mai 2024. http://dx.doi.org/10.19088/sshap.2024.012.
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