We have analyzed a frondelite mineral sample from the Cigana mine, located in the municipality of Conselheiro Pena, a well-known pegmatite in Brazil. In the Cigana pegmatite, secondary phosphates, namely eosphorite, fairfieldite, fluorapatite, frondelite, gormanite, hureaulite, lithiophilite, reddingite and vivianite are common minerals in miarolitic cavities and in massive blocks after triphyl...

Up to now, there are enormous efforts to develop such coatings that can enhance the biocompatibility properties of metallic implant materials (Ti, Ti6Al4V, CoCrMo, stainless steel) and even provide antimicrobial effect. The most interesting candidates for these coatings are calcium phosphate (CaP) or specifically hydroxyapatite (HAp) phases due to their biocompatibility, osteoconductive propert...

An existing sequential extraction scheme for particulate iron (Fe) is evaluated manganese (Mn) using a range of Mn standards. The consists 5 steps and quantifies operationally defined pools (1) poorly ordered oxides phosphates (ascorbic acid extractable); (2) carbonates sulfides (1 M HCl extractable), (3 4) crystalline (citrate buffered dithionite ammonium oxalate extractable, respectively) (5)...

This study aims to explore the relationship between human enteric viruses found in town-scale surface water sources and certain chemical contaminants present water. From October 2010 April 2012, samples were collected analyzed using a combination of biophysical molecular techniques detect presence adenoviruses (HAdV) enteroviruses (HEV) as well parameters predictors for virus survival. The conc...