Intentional homicide, drug trafficking and social indicators in Salvador, Bahia, Brazil.

To study the association between intentional homicide, drug trafficking and social indicators in Salvador, Bahia, Brazil in 2010. This is an ecological study, based on cases of intentional homicides and drug trafficking registered by the Civil Police of Bahia, as well as social indicators. A negative binomial regression model, utilizing R software (version 2.

Metal accumulation in soils derived from volcano-sedimentary rocks, Rio Itapicuru Greenstone Belt, northeastern Brazil.

Many countries and some Brazilian regions have defined the guideline values for metals in soils. However, the local geological features may be so heterogeneous that global or even regional guideline values cannot be applied. The Greenstone Belts are worldwide geological formations of vast extension, containing mineralization of various metals (e.