12 research outputs found
Lack of population genetic structure and host specificity in the bat fly, Cyclopodia horsfieldi, across species of Pteropus bats in Southeast Asia
Get PDFComplexation de l’aluminium par des hétéropolyanions lacunaires : Récupération par membrane liquide émulsionnée
No full textL'objectif visé par cette étude est la dépollution des eaux à partir de la complexation d’un métal toxique, l’aluminium en solution, par des hétéropolyanions lacunaires (HPA) de type Dawson. Les complexes formés sont récupérés par membrane liquide émulsionnée (MEL).Les résultats de la complex1ation de l’aluminium pars deux hétéropolyanions : (α2P2W17O61)10- et (P2W15Mo2O61)10- se sont avérés très intéressants. Les constantes de stabilité des complexes formés Al3+ (α2P2W17O61)7- et Al<sup3+ (P2W15Mo2O61)7- sont respectivement : β1=6,12.107et β2 =1,28.106. En ce qui concerne la récupération des complexes formés, par (MEL), le rendement d'extraction est de 86% pour Al3+ (α2P2W17O61)7-, pour un temps de contact de 4min, et de 91 % pour Al 3+ (P2W15Mo2O61)7-, pour un temps de contact de 6min.Mots clés : hétéropolyanions; aluminium; complexation; extraction; membrane liquide émulsionné
An empirical study on the stock market performance of host countries before, during and after the Olympic Games and FIFA World Cup
No full textThis study examines the impact of 2 major international mega-sporting events. The Summer Olympic Games and the FIFA World Cup on the stock market performances the of host countries. In particular, this study uses the Ordinary Least Squares Method to investigate the stock market reaction before, during and after the Summer Olympic Games and the FIFA World Cup. The events that were analyzed for the Olympics in this study were the 2000 Sydney Olympics, 2004 Athens Olympics and 2008 Beijing Olympics. For the FIFA World Cup, the 2002 Korea/Japan World Cup, 2006 Germany World Cup and 2010 South Africa World cup were studied. An event study was conducted in the sector analysis to determine the effects these international mega-sporting events on the market sectors. The sectors included in the study were the consumer staples, financial and industrial sectors. The empirical results indicate that there is an insignificant effect on the host countries\u27 stock markets as a whole for both mega-sporting events. However, these mega-sporting events gave off a significant effect on the selected market sectors
Modeling of electrochemical properties of potential-induced defects in butane-thiol SAMs by using artificial neural network and impedance spectroscopy data
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Neutron Radiographic Study of the Effect of Heat-Driven Water Transport on the Tensile Strength of Bentonite-Bonded Moulding Sand
No full textEstablishment Limitation Constrains the Abundance of Lactic Acid Bacteria in the Napa Cabbage Phyllosphere
No full text2D and 3D Polymeric Wells−Dawson Polyoxometelates: Synthesis, Crystal Structures, and Cyclic Voltammetry of [(M(H 2
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