Radiological Characteristics of Carbonated Portland Cement Mortars Made with GGBFS.

The objective of this study is to assess whether the carbonation process can modify the physicochemical characteristics of the natural radionuclides of the three natural radioactive series, together with K. Three mortar specimens with different percentages of ground granulated blast-furnace slag (GGBFS), cured under water for 1, 3, 7, 14, or 28 days, were subjected to a natural carbonation process. Activity concentrations for the solid and ground mortars were determined by gamma spectrometry and by radiochemical separation of isotopic uranium.

Efficacy, safety and effectiveness of licensed rotavirus vaccines: a systematic review and meta-analysis for Latin America and the Caribbean.

Background: RotaTeq™ (RV5; Merck & Co. Inc., USA) and Rotarix™ (RV1, GlaxoSmithKline, Belgium) vaccines, developed to prevent rotavirus diarrhea in children under five years old, were both introduced into national immunization programs in 2006.

Randomized controlled trial of vascular access in newborns in the neonatal intensive care unit.

Objective: To compare the effectiveness of two methods of vascular access in newborns.

Design: Randomized controlled trial.

Setting: Neonatal intensive care unit in Regional Hospital of Valdivia, Chile.