The quality of water in different usages especially drinking water has an important role on human health. As increasing the urban population and developing the industries, the releasing different materials into water cause various pollutions and problems for human cycles. The important goal of the present study is analyzing the mercury existence and pollution on different part of urban built en...

Exploite a partir de 1957 par la Societe nationale des petroles d’Aquitaine, le gisement de gaz naturel Lacq, dans les Basses-Pyrenees, joue un role important developpement d’une industrie petrochimique nationale. Mais ses multiples pollutions, il aussi degrade riviere qui coule proximite, gave Pau. Cet article retrace maniere dont cette question pollutions aquatiques s’est imposee l’agenda pou...

L’ensemble des activités en lien avec l’eau du lac de Guiers au Sénégal a potentiellement conséquences importantes sur son état écologique. Cet article part constat que la pollution par les pesticides concentre l’essentiel débats et actions entreprises tandis l’enrichissement nutriments eaux (représentant un risque d’eutrophisation) n’est problème rarement évoqué. Ce conduit auteurs à s’interro...

Abstract—This paper presents the experimental results of 11 kV and 33 kV silicon composite insulators under artificial salt and urea polluted conditions. The tests were carried out under different seasons like summer, winter, and monsoon. The artificial pollution is prepared by properly dissolving the salt and urea in the water. The prepared salt and urea pollutions are sprayed on the insulator...

We note that the two body nonleptonic pure tree decays B± c → D± s D 0(D̄0) and the corresponding vector-vector modesB± c → D∗± s D∗0(D̄∗0) are well suited to extract the weak phase γ of the unitarity triangle. The CP violating phase γ can be determined without any uncertainties due to the absence of relative strong phase difference and also these decay modes are free from the penguin pollutions.