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Silver nanoparticles and silver based nanostructured composites are being frequently used in a variety of biomedical and industrial applications, such as an antimicrobial agents, lead-free solders, electric contact materials, gas-sensitive sensor, etc. The most complicated Silver using problems are related to: i) recovery of silver from ore waste materials; ii) the controlled synthesis of met ...

The graffiti or street art is a spontaneous and revolutionary action that reflects the collective imagination of some generations marked by social acceptance and recognition as an important part of urban art, while retaining the possibility of positioning ideas, firms, or styles. Both in Mexico and Europe, the graffiti represents the revaluation of urban culture, but can´t be oblivious to the soci ...