Results 41 to 50 of about 3,226 (122)

A High‐Performance Oxidized Graphene for Dendrite‐Free Anodes and Kinetically Enhanced Cathodes of Aqueous Zn‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Oxidized graphene rich in carboxylic acid groups obtained via a simple electrochemical exfoliation route is shown to tackle the main challenges of aqueous Zn‐ion batteries (AZIBs), specifically short Zn anode cycle life and sluggish cathode reaction kinetics.
Enrique Álvarez‐Rubiera, José M. Munuera, Julen Beitia, Cian Gabbett, Alba Suárez‐Fernández, Eider Goikolea, Jonathan N. Coleman, Idoia Ruiz de Larramendi, Silvia Villar‐Rodil, Juan I. Paredes   +9 more
wiley   +1 more source

LAS TECNOLOGÍAS DE LA INFORMACIÓN Y LAS COMUNICACIONES EN LA FORMACIÓN DEL PROFESIONAL DE LA CARRERA DE QUÍMICA

Tecnología Educativa, 2018
Este trabajo contribuye a solucionar carencias relacionadas con el empleo de las aulas virtuales en el aprendizaje de la Química Inorgánica de los profesionales en formación, donde aún no se satisfacen las necesidades e intereses de los estudiantes, de ...
María Teresa Serrano Rodríguez, Abraham Salinas Castellanos, Gilberto Cuba Ricardo, Roberto Pérez Almaguer   +3 more
doaj   +2 more sources

Soil and Forest Degradation Driven by Cattle Grazing and Selective Logging in Sub‐Antarctic Nothofagus Ecosystems of Patagonia

Land Degradation &Development, EarlyView.
ABSTRACT Soil and forest degradation driven by chronic land‐use pressures is an increasingly widespread process in forested landscapes worldwide, yet its empirical characterization remains limited, particularly in temperate and sub‐Antarctic ecosystems.
Carlos Zamorano‐Elgueta, Susana Valle, Simona Landi, José Dörner, Luis Cayuela   +4 more
wiley   +1 more source

¿Microescala o reducción de escala? Perspectivas en Química Inorgánica

Educación Química, 2018
Éste es un breve resumen de la presentación dada en el Quinto Congreso de Química de América del Norte, celebrado en Cancún, Quintana Roo, México, en noviembre 1997. Se presentan varias alternativas posibles para la reducción de escala en experimentos de
David E. Berry
doaj   +1 more source

Downsize Effect on Photocatalytic Syngas Production of a 2D Metal Organic Framework—Tuning the Selectivity From HER to CO2RR via Dimensional Modulation and Mechanical Exfoliation of 2D Metal‐Organic Layers

Small Methods, EarlyView.
A cobalt(II) 2D MOF (2D) has been downsized by covalent bond breaking to form a 1D MOF (1D) and by sonication, to form a 2D exfoliated MOF (2D‐ex). Photocatalytic CO2 reduction shows that 2D and 1D lead to H2‐enriched syngas, whereas 2D‐ex leads to CO‐enriched syngas.
Rajat Saha, Manuel Molina‐Muriel, Fernando Déniz, Mahesh Eledath Changarath, Antonio Ribera, Samia Benmansour, Juan F. Sánchez‐Royo, Josep Canet‐Ferrer, Debmalya Ray, Hermenegildo García Gómez, Carlos J. Gómez García   +10 more
wiley   +1 more source

Biological invasions disrupt the relationship between size spectrum and trophic interactions in freshwater fish communities

Journal of Animal Ecology, EarlyView.
Our study shows that non‐native species alter the relationship between the size‐spectrum slope and the predator–prey mass ratio (PPMR) in freshwater fish communities by occupying distinct trophic niches. Abstract The size spectrum, which describes the relationship between abundance (or biomass) and body size, is an ataxic approach that can provide ...
Valentin Marin, Gaël Grenouillet, Ignasi Arranz, Julien Cucherousset   +3 more
wiley   +1 more source

Química inorgánica ¿Teoría o realidad?

Educación Química, 2018
En las últimas décadas, los libros de química inorgánica han aumentado de manera muy sustancial la cantidad de sus páginas, debido principalmente a la necesidad de cubrir temas como estructura...
Laura Gasque Silva
doaj   +1 more source

Heterogeneous Organocatalytic Synthesis of Propargylic Esters Using a Polymer‐Supported N‐Heterocyclic Carbene

ChemSusChem, Volume 19, Issue 14, 29 July 2026.
A vinyl addition polynorbornene (VA‐PNB)‐supported N‐Heterocyclic carbene precatalyst is successfully used in the metal‐free coupling of terminal alkynes, carbon dioxide, and chlorides toward propargylic esters. The conversion of carbon dioxide into high‐value chemical scaffolds is a central challenge in modern green chemistry. In this study, we report
Dimitrios K. Giannopoulos, Entzy Kaplanai, Carlos Lendínez, Sozan N. Abdullah, Ana C. Albéniz, Georgios C. Vougioukalakis   +5 more
wiley   +1 more source

ESTUDIO COMPARATIVO ENTRE BIOAPATITA E HIDROXIAPATITA SINTÉTICA OBTENIDA POR PRECIPITACIÓN QUÍMICA Y SÍNTESIS MECANOQUÍMICA

Revista de Investigación de Física, 2009
Se presenta un estudio comparativo entre la componente inorgánica de una muestra de tejido óseo humano respecto de apatitas sintetizadas mediante precipitación química, síntesis mecanoquímica y una muestra de hidroxiapatita comercial. Las muestras fueron
J. Quispe M., M. Moreno, J. Montano, A. Guzman, A. Cavero, M. Arce, M. Pillaca   +6 more
doaj   +1 more source

Magnetic lipase B from Candida antarctica (CALB) biocatalyst for integrated valorization of tilapia by‐products and biodiesel biorefining

Biofuels, Bioproducts and Biorefining, Volume 20, Issue 4, Page 1835-1860, July/August 2026.
Abstract The immobilization of lipase B from Candida antarctica (CALB) on an amino‐epoxy functionalized magnetic support (Fe3O4‐PEI‐DGEBA) resulted in a highly stable and efficient biocatalyst for biofuel production from tilapia oil. The synthesized support was characterized using scanning electron microscopy, transmission electron microscopy, X‐ray ...
Rafael Leandro Fernandes Melo, Francisco Simão Neto, Bruno Caio Chaves Fernandes, Paulo Gonçalves de Sousa Junior, Patrick da Silva Sousa, Tiago Melo Freire, Raniere Dantas Valença, Frederico Ribeiro do Carmo, Marcos Reinaldo da Silva, Leonardo Farias Serafim, João Maria Soares, Pierre Basílio Almeida Fechine, José Cleiton Sousa dos Santos   +12 more
wiley   +1 more source