WorldCat Identities

Landy, David

Overview
Works: 8 works in 8 publications in 2 languages and 11 library holdings
Roles: Other, Author, Thesis advisor, Opponent
Classifications: QD505, 547.2
Publication Timeline
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Most widely held works by David Landy
Ionic liquids and cyclodextrin inclusion complexes: limitation of the affinity capillary electrophoresis technique by Nadine Mofaddel( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

Eco-efficient Catalytic Hydrodechlorination of Carbon Tetrachloride in Aqueous Cyclodextrin Solutions by Andy Cassez( )

1 edition published in 2006 in English and held by 2 WorldCat member libraries worldwide

Remediation technologies using cyclodextrins: an overview by David Landy( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

<> by David Landy( Book )

in French and held by 1 WorldCat member library worldwide

Développement de nouvelles méthodologies pour la calorimétrie de titration isotherme : Applications aux domaines de l'environnement et de la santé by Éléonore Bertaut( )

1 edition published in 2016 in French and held by 1 WorldCat member library worldwide

This work was dedicated to the development of new isothermal titration calorimetry (ITC) methodologies for the characterization of intramolecula affinities, after validation of model system via capillary electrophoresis, UV-visible and NMR spectroscopy. We have demonstrated that the coupling of unconventional experiments with the conventional protocols generally improves the calorimetric characterization, with a dramatic decrease of the uncertainties on thermodynamic parameters. The potential of global analysis applied to differentiated experiments was evaluated on a theoretical level, allowing the definition of optimal experiments, depending on the type of studied complex. These strategies also enabled, on a experimental point of view, the study of complexations which cannot be analyzed by conventional approaches, in the case of complexes involving cyclodextrins or albumin. Indeed, our strategies overcomes the difficulties associated with athermic complexes, with complexes of low affinity, with multiple equilibria and with the low solubility of interacting partners. Finally, the evaluation of a new thermo-kinetic treatment of ITC thermograms has been achieved, further increasing the potential of this technique in the characterization of molecular interactions
Développement de nanovecteurs multicompartimentaux à base de cyclodextrines amphiphiles et de lipides pour des applications en nanomédecine by Leïla Zerkoune( )

1 edition published in 2015 in French and held by 1 WorldCat member library worldwide

Diagnostic des pratiques d'utilisation et quantification des pesticides dans la zone des Niayes de Dakar (Sénégal) by Amadou Diop( )

1 edition published in 2013 in French and held by 1 WorldCat member library worldwide

Urban agriculture in the Niayes zone of Dakar provides 60% of the vegetable needs of this region which has a high urbanization rate. Farmers in this area rely heavily on pesticides to protect crops from pests and diseases. The main objectives of this work were to try to answer the following questions : Do pesticide use patterns and management have an impact on the quality of environmental resources of the area? Does consumption of horticultural products and groundwater of this area pose a risk? We tried to bring answers through field surveys and analyses. The survey results showed the application of various pesticides belonging to organophosphates, organochlorines, carbamates and pyrethroids on a variety of speculations. Pesticides applied are not generally approved and some of them are persistent organic pollutants and thus prohibited for use in Senegal. Use practices (frequency, amount, storage conditions, packaging disposal) do not respect the rules of good agricultural practices. The analyses were performed on 80 groundwater samples, 119 of soil samples and 175 of vegetables collected at Niaga, Thiaroye, Cambérène and Malika during 4 campaigns. Results show high contamination levels of the environment with detection of 15 (in groundwater and vegetables) and 17 (in soil) pesticides out of 21. The molecules that have been detected with high frequencies in the matrices are those cited with frequencies greater than 6%. Nearly 56% of groundwater samples showed at least one substance with level exceeding the corresponding standard. 38% did not meet the standard set for total residues concentration. For vegetables, the percentages of exceeding standards ranged between 58 and 76% depending on the site. The estimated daily intake showed that nearly 80% of pesticide residues belong to the following WHO classes (extremely hazardous, highly hazardous and moderately hazardous). This observation evidences the risk of human exposure to contaminated food and water
Élaboration et caractérisation de matériaux composites biosourcés à base de mucilage et de fibres de lin by Corentin Musa( )

1 edition published in 2019 in French and held by 1 WorldCat member library worldwide

Les travux de thèse ont été menés dans un contexte de développement et de valorisation de la filière lin au travers de l'élaboration de nouveaux matériaux composites biosourcés à base de mucilage et de fibres de lin. Ces travaux ont conduit dans un premier temps à la synthèse de précurseurs d'isosorbide époxy et polyuréthanes comme alternative aux précurseurs toxiques conventionnels. Pour cela nous avons proposé une voie originale d'optimisation de la synthèse de diglycidyle éther d'isosorbide (DGEI) en utilisant un procédé ultrasonique. Par la suite, la comparaison des méthodes de transformation des époxys en carbonates cycliques par l'inclusion de CO₂ nous a servi de base dans l'élaboration d'un protocole efficace de conversion des DGEI en cyclocarbonates d'isosorbide (CCI) dans des conditions douces de pression et de température. Dans une seconde partie, l'extraction de composés hydrosolubles de la graine de lin a permis d'identifier la structure complexe du mucilage et les effets des paramètres d'extraction sur les propriétés physico-chimiques et thermiques du mucilage. Ensuite, pour la première fois, l'oxydation du mucilage au 2,2,6,6-tétraméthylpipéridine-1-oxyle (TEMPO) a été réalisée avec succès. Puis, nous avons pu mettre en évidence l'efficience de l'oxydation assistée par ultrasons comparée à la méthode classique lors de la montée en échelle du procédé. En vue d'améliorer la compatibilité fibre/matrice des composites à fibres végétales, des traitements appliqués sur des fibres courtes de lin ont été effectués amenant à l'individualisation des fibres et à l'amélioration de l'oxydation appliquée sur des fibres sonifiées. Ces différents matériaux ont permis de formuler un panel de nouveaux biocomposites. Les DGEI ont été valorisés par la confection d'une résine réticulée par une amine renforcée par des fibres longues de lin dont les performances sont identiques aux composites pétro-sourcés. Par la suite, la sonicationdes fibres courtes de lin a mené à l'amélioration des propriétés mécaniques de composite PLA/Lin. L'utilisation de mucilage oxydé a démontré les aspects positifs de l'incorporation du mucilage de lin dans les composites légers et résistants en compression
 
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Audience Level
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Audience level: 0.00 (from 0.00 for Ionic liqu ... to 0.00 for Ionic liqu ...)

Alternative Names
David Landy wetenschapper

Languages