The development of low-cost, highly active, and stable oxygen reduction reaction (ORR) catalysts is of great importance for practical applications in numerous energy conversion devices.Herein, iron/nitrogen/phosphorus co-doped carbon electrocatalysts (NPFe-C) with multistage porous structure were synthesized by the self-template method using melami
The Late Cretaceous dinosaur record in southern South America has been improved recently; particularly with findings from Chorrillo and Detoxification Cerro Fortaleza formations, both bearing ankylosaur remains, a clade that was not previously recorded in the Austral Basin.The dinosaur fauna of the type locality of Cerro Fortaleza Formation is know
Several samples of fossilized wood (charcoal) were collected in the Papayita archaeological site, Tie Downs in coastal Ecuador.This carbonized material was encountered inside a layer of volcanic ash that sealed the site.The ash-sized tephra was produced by a sub-Plinian eruption from the Guagua Pichincha volcano contemporaneous with the late Valdiv
Abstract Introduction A common feature of external duodenal fistulae is the devastating effect of the duodenal content rich in bile and pancreatic juice on nearby tissues with therapy-resistant local and systemic complications.This study BB Creams analyzes the results of different management options with emphasis on successful fistula closure rates