Results 31 to 40 of about 31,113 (154)
Catalase‐Based Air‐Cathode for Biocompatible Zinc–Air Battery
ChemCatChem, Volume 17, Issue 3, February 6, 2025.This article highlights the use of catalase (CAT) as electrocatalyst for the oxygen reduction reaction (ORR) in the air electrode of zinc–air batteries (ZABs). CAT immobilized with Nafion on electrode surfaces demonstrates great long‐term stability, exhibiting direct electrochemical response and retaining its bioactivity. CAT‐Nafion ZAB provides better
Valentín García‐Caballero +6 more
wiley +1 more source
Fluorescent Carbon Dots with Red Emission: A Selective Sensor for Fe(III) Ion Detection
ChemosensorsWe present a procedure for the synthesis and purification of p-phenylenediamine-based carbon dots that can be used for the recognition of Fe(III) ions. Carbon dots have an approximately spherical shape with an average size of 10 nm and are composed of a ...
Ángela Fernández-Merino +6 more
doaj +1 more source
Demo 81. Botella de plástico como máquina térmica de Carnot [PDF]
, 2013 Objetivo: Estudiar la formulación de Carnot del segundo principio de la ...
Pedrós Esteban, Roberto
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ChemCatChem, Volume 16, Issue 21, November 11, 2024.This article highlights the synthesis of new LaMnO3 perovskites in which RuO2 has been incorporated in order to increase its behavior as an electrocatalyst for the oxygen evolution reaction (OER). Air electrodes made with this catalyst have been tested in zinc‐air batteries, demonstrating a significant improvement in energy efficiency for a long life ...
Katherine Jejen +4 more
wiley +1 more source
EnergiesThe use of non-renewable energy resources is one of the main drivers of climate change. In response, the United Nations established the seventh Sustainable Development Goal, “Affordable and clean energy”, which promotes the transition toward renewable ...
Luis José Turcios +4 more
doaj +1 more source
Factores termodinámicos y microestructurales para el diseño de aleaciones tixotrópicas
Revista de Metalurgia, 2005 El proceso de conformado en estado semisólido es un proceso híbrido entre la fundición y la conformación por deformación, que se basa en las propiedades tixotrópicas que presentan algunos materiales que han sido agitados durante su proceso de ...
Z. Azpilgain +4 more
doaj +1 more source
Problemario de termodinámica aplicada I [PDF]
, 1999 1 archivo PDF (222 páginas)El contenido del libro tiene como objeto auxiliar a los alumnos en el curso de termodinámica, para ello se expone la teoria y se plantea una serie de ...
Lara Valdivia, Araceli +2 more
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Polymers for Advanced Technologies, Volume 35, Issue 10, October 2024.ABSTRACT Hydrogel materials are continually developing in biomedical engineering and recently a lot of effort has gone into their engineered performance in physiological applications. Porosity is an important characteristic for tissue engineering scaffolds to allow enhanced biocompatibility and the pore size needed is dependent on the application and ...
Caitriona Winters +4 more
wiley +1 more source
FIGEMPA, 2019 La necesidad de gestionar los residuos sólidos orgánicos generados por los vendedores de jugo de naranja, en la ciudad de Quito, se propone un proceso para convertir las cáscaras de naranja, en materia prima para la obtención de pectina cítrica dando a ...
Teresa Alejandra Palacios-Cabrera +3 more
doaj +1 more source
La política pública de desplazamiento forzado en Colombia: una visión desde el pensamiento complejo [PDF]
, 2015 a ciencia que estudia los cambios de estado de los sistemas o de los fenómenos es la termodinámica. Este texto hace hincapié en la segunda ley de la termodinámica, que expresa la entropía o el grado de desorden de un sistema.
Alpargatero Ulloa, Leidy
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