Month: September 2013

The Mind

He sat next to a group of young, strong and rough men. He knew that one of them was called Simon and was very friend of the master. It also heard tell that one of them was called Felipe and another more Andres. Everyone was very close to his teacher and it was who most…

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Metalloids and heavy metals such as arsenic, cadmium, mercury or lead have demonstrated their environmental toxicities being highly harmful to humans; therefore deserve to be regulated explicitly (the phenomenon of speciation). Lead has been widely used by mankind and therefore is causing more problems and more concern around the world. Metalloid most used in the…

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