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EBSD Study of Fe-Ni phases on a L4-L5 ordinary chondrite meteorite

The research on interplanetary materials such as comets, meteors or meteorites contributes to understand the origin and evolution of our Solar System. They provide highly valuable information on the relation between the conditions of formation and their microstructure, chemical composition and magnetic properties. Orientation relationships of the Fe-Ni system and distribution of body-centered cubic kamacite-α,...

C3G - A portuguese collaboratorium for Geology, Geodesy and Geophysics

XRD, SEM and petrologic characterization of stony-iron and metallic meteorites

Meteorites are remnants of geological processes that occurred in our Solar System. Properly analyzed, the bulk composition, mineralogy, and petrology of meteorites can be used to constrain planet formation processes. Moreover, the laboratorial characterization of meteorite samples plays an important role in the interpretation of asteroid remote observation spectra. In this work, we have characterized three mete...

Early modification of sickle cell disease clinical course by UDP-glucuronosyltr...

Elevated erythrocyte destruction in sickle cell disease (SCD) results in chronic hyperbilirubinaemia and, in a subset of patients, cholelithiasis occurs. We investigated whether the (TA)n promoter polymorphism in the UDP-glucuronosyltransferase 1A1 gene (UGT1A1) may modify bilirubin metabolism, influencing bilirubinaemia, predisposition to cholelithiasis and subsequent cholecystectomy, in a group of 153 young S...

Rastreio Neonatal de Hemoglobinopatias numa População Residente em Portugal

The primary objective of newborn screening of hemoglobinopathies is the early identification of infants with sickle cell disease, as they are at increased clinical risk. Other goals include the identification of other types of clinically significant hemoglobinopathies and the detection of heterozygous carriers followed by the screening and counselling of family members. We performed a pilot study for the neonat...

Neonatal screening of hemoglobinopathies in a population residing in Portugal.

The primary objective of newborn screening of hemoglobinopathies is the early identification of infants with sickle cell disease, as they are at increased clinical risk. Other goals include the identification of other types of clinically significant hemoglobinopathies and the detection of heterozygous carriers followed by the screening and counselling of family members. We performed a pilot study for the neonat...