101 research outputs found
Indicadores do uso de medicamentos prescritos e de assistência ao paciente de serviços de saúde
Determination of Specific Electrocatalytic Sites in the Oxidation of Small Molecules on Crystalline Metal Surfaces
The identification of active sites in electrocatalytic reactions is part of the elucidation of mechanisms of catalyzed reactions on solid surfaces. However, this is not an easy task, even for apparently simple reactions, as we sometimes think the oxidation of adsorbed CO is. For surfaces consisting of non-equivalent sites, the recognition of specific active sites must consider the influence that facets, as is the steps/defect on the surface of the catalyst, cause in its neighbors; one has to consider the electrochemical environment under which the “active sites” lie on the surface, meaning that defects/steps on the surface do not partake in chemistry by themselves. In this paper, we outline the recent efforts in understanding the close relationships between site-specific and the overall rate and/or selectivity of electrocatalytic reactions. We analyze hydrogen adsorption/desorption, and electro-oxidation of CO, methanol, and ammonia. The classical topic of asymmetric electrocatalysis on kinked surfaces is also addressed for glucose electro-oxidation. The article takes into account selected existing data combined with our original works.M.J.S.F. is grateful to PNPD/CAPES (Brazil). J.M.F. thanks the MCINN (FEDER, Spain) project-CTQ-2016-76221-P
Avaliação das visitas domiciliárias por estudantes e pelas famílias: uma visão de quem as realiza e de quem as recebe
SYMBIOTIC EFFECTIVENESS AND COMPETITIVENESS OF CALOPO RHIZOBIAL ISOLATES IN AN ARGISSOLO VERMELHO-AMARELO UNDER THREE VEGETATION COVERS IN THE DRY FOREST ZONE OF PERNAMBUCO
Caracterização dos idosos usuários de medicação residentes em instituição de longa permanência
Synthesis and Characterization of Niobium Carbide with Copper Addition Obtained Via Gas Solid Reaction
Free access to hypertension and diabetes medicines among the elderly: a reality yet to be constructed
Analysis of nutrition (and food) education syllabus of nutrition undergraduate courses
Fast assessment of mineral constituents in grass by inductively coupled plasma optical emission spectrometry
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