Perovskite oxides exhibit bifunctional activity for both oxygen reduction (ORR) and oxygen evolution reactions (OER), making them prime candidates for energy conversion in applications like fuel cells and metal-air batteries. Their intrinsic catalytic prowess, combined with low-cost, abundance, and diversity, positions them as compelling alternatives to noble metal and metal oxides catalysts. This review encapsulates the nuances of perovskite oxide structures and synthesis techniques, providing insight into pivotal active sites that underscore their bifunctional behavior.
View Article and Find Full Text PDFBackground: The Cardio-Renal Pediatric Dialysis Emergency Machine (CA.R.P.
View Article and Find Full Text PDFBackground: In spring 2019, an outbreak of Shiga toxin-producing Escherichia coli-associated hemolytic uremic syndrome (STEC HUS) occurred in France. Epidemiological investigations made by Santé publique France in connection with microbiological investigations at the national reference center for STEC promptly identified a common exposure to consumption of raw cow's milk cheese, and confirmed a cluster affiliation of the E. coli O26:H11 outbreak strain.
View Article and Find Full Text PDFAim: To determine the frequency and causes of blindness in diabetic Africans.
Methods: The study was a cross-sectional survey carried out among known black diabetics consecutively admitted at the Teaching Hospital, University of Kinshasa, between 2005 and 2007. Examination methods included interviewer-administered structured questionnaire, eye examinations (visual acuity, tonometry, funduscopy), and fasting plasma glycaemia test.