Nuestro grupo organiza más de 3000 Series de conferencias Eventos cada año en EE. UU., Europa y América. Asia con el apoyo de 1.000 sociedades científicas más y publica más de 700 Acceso abierto Revistas que contienen más de 50.000 personalidades eminentes, científicos de renombre como miembros del consejo editorial.
Revistas de acceso abierto que ganan más lectores y citas
700 revistas y 15 000 000 de lectores Cada revista obtiene más de 25 000 lectores
Iuri Bezerra de Barros, Cecília Volkmer-Ribeiro, Cláudia Cândida Silva and Valdir Florêncio da Veiga Junior
Sponges, comprising not only organic chemical composition, but also the metals that they filter and accumulate, are aquatic animals that constitute one of the main hotspots in the search for new drugs, being the subject of many studies. The inorganic accumulation pattern from these sponges could be used for several purposes, from bioremediation to chemo-taxonomic characterization. In the present study, the X-ray fluorescence inorganic analysis of D. browni, one of the most common species of freshwater sponge in the Negro River, was performed in order to approach its chemical composition. Silicon, aluminium and calcium are the most abundant elements in this species. In addition, the presence of S, Cl, K, Ti, V, Mn, Fe, Cu, Zn and Sr were also detected. Aluminium associated with Ca, K and S is a characteristic chemical profile that can be used as a bio-marker of this genus.