Results 91 to 100 of about 2,589 (233)

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

Entrenador digital para convertidores en aplicaciones docentes [PDF]

open access: yes, 2011
Este proyecto trata de diseñar y crear un convertidor estático de potencia capaz de controlar distintos accionamientos en aplicaciones docentes. Sería como tener varios convertidores en uno dependiendo de las conexiones.
Fiol Ramon, Josep   +1 more
core  

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

open access: yesAdvanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari   +4 more
wiley   +1 more source

The difficulties of adapting university teaching for students with disabilities: an analysis focussed on inclusive guidance [PDF]

open access: yes, 2012
The need for specific attention for the personal, social, academic and professional development of students with disabilities is a challenge that the university is committed to.
Alegre de la Rosa, Olga María   +2 more
core  

Synthetic Nanobiology Actuated Lipometabolic Cell Factory for Autologous Tumor Immunotherapy

open access: yesAdvanced Functional Materials, EarlyView.
FA plays a crucial role in the interaction between tumor cells and the tumor microenvironment, especially for the immune response. A biocatalytic immunoenhancement strategy is developed to boost antitumor immunity by FA metabolic orientation to ceramide. Through the design of this delicate catalytic immunoenhancement strategy, the synthetic nanobiology
Shoujie Zhao   +8 more
wiley   +1 more source

Estratégia de controle de tensão para um sistema de geração fotovoltaica com conversor boost e conversor de frequência monofásico de ponte completa [PDF]

open access: yes, 2018
NASCIMENTO, Rayane Paula do. Estratégia de controle de tensão para um sistema de geração fotovoltaica com conversor boost e conversor de frequência monofásico de ponte completa. 2018. 79 f.
Nascimento, Rayane Paula do
core  

Liquid Crystalline Inverted Lipid Phases and Reverse Micelles in Drug Delivery: From Molecular Design to Therapeutic Potential

open access: yesAdvanced Functional Materials, EarlyView.
Liquid crystalline inverted lipid phases and reverse micelles are self‐assembled lipid nanostructures that enhance the solubility, stability, and delivery of diverse therapeutics. This review integrates their physicochemical principles, formulation strategies, drug loading mechanisms, and biomedical applications, highlighting their growing ...
Numan Eczacioglu   +3 more
wiley   +1 more source

Reator eletrônico de alto fator de potência com tensão constante no barramento contínuo

open access: yesEletrônica de Potência, 1998
Este artigo apresenta um reator eletrônico de alto fator de potência baseado em um único estágio de processamento de potência. Através do controle da frequência de chaveamento as tensões do barramento CC e das chaves semicondutoras são mantidas ...
Ricardo O. Brioschi   +2 more
doaj   +1 more source

Prototipo de un convertidor de CC/CC Buck para pruebas de laboratorio [PDF]

open access: yes, 2016
Los convertidores conmutados de CC-CC, tal como se muestra en la figura 1-1, se encuentran conformados por una etapa de potencia de entrada, una entrada de control y una etapa de potencia de salida.
Cifuentes Franco, Carlos Alberto   +1 more
core  

Infrared Nanocrystals for Space Application: Hardness to Irradiations

open access: yesAdvanced Functional Materials, EarlyView.
This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret   +22 more
wiley   +1 more source

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