Nanorods of ZnO/CeO2 were synthesized by thermal decomposition method. The decomposition temperature and formation of composite material were confirmed by the thermogravimetric analysis (TGA) before the synthesis process. The prepared samples were characterized by different techniques. The structural and morphological properties of ZnO/CeO2 nanorods were confirmed by X-ray diffraction (XRD) and high resolution scanning electron microscopy (HR-SEM). The chemical composition and specific surface area analysis were done by energy dispersive X-ray spectroscopy (EDX) and Brunauer–Emmett–Teller (BET) method. Further the catalyst was used for photocatalytic degradation of organic dye under visible light irradiation
During our routine ecological survey conducted at Pulicat Lagoon, the most diverse class Gastropods comprised of 26 families with 34 species and Bivalvia with 13 families and 17 species were recorded. The most abundant molluscs species was Crassostrea madrasensis, captured between October 2013 − September 2015. Quite a good number of molluscs were washed ashore. The economic value of the shells in the field of cosmetics was raised high recently. Both in terms of aquaculture and market value the attention should be diverted towards their conservation. With few exceptions, the majority of these molluscs were ornamental.
RÉSUMÉ: La diversite des mollusques du lagon de Pulicat (India).Durant notre étude écologique de routine effectuée dans le lagon de Pulicat, la classe la plus diversifiés des Gastropodes contient 34 espèces et 26 familles suivies par les Bivalves avec 17 espèces et 13 familles. Dans les prises d'Octobre 2013 -Septembre 2015, l'espèce la plus abondante a été la Crassostrea madrasensis. Un grand nombre de mollusques s'échouent sur les rives et récemment. La valeur économique des coquillages a augmenté de manière significative. En ce qui concerne l'aquaculture ainsi que la valeur de marché, l'attention devrait se porter plus vers leur conservation. A quelques exceptions près, la grande majorité sont des mollusques ornementaux.
REZUMAT: Diversitatea moluștelor din Laguna Pulicat (India).În cadrul studiului nostru ecologic de rutină, efectuat în laguna Pulicat, s-au înregistrat 34 specii din 26 familii aparținând clasei Gastropoda, cea mai bine reprezentată, și 17 specii din 13 familii aparținând clasei Bivalvia. În capturile din Octombrie 2013 -Septembrie 2015, specia cea mai abundentă a fost Crassostrea madrasensis. Un mare număr de moluște au fost aduse pe țărm de valuri. Valoarea economică a cochiliilor cu aplicații cosmetice a crescut recent. Atât în termeni de acvacultură cât și de valoare de piață, atenția trebuie reorientată către conservarea acestor specii. Cu câteva excepții, majoritatea acestor moluște sunt ornamentale.
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