[EN] The electrophilicity index, omega, of a series of substituted ethylenes used in some relevant organic reactions has been evaluated from the ionization potential JP) and the electron affinity (EA) computed by vertical ...

[EN] By a combination of theoretical modeling and XPS and SERS spectroscopic studies, it has been found that it is possible to stabilize metallic copper species under oxidizing reaction conditions by adjusting the atomicity ...

[ES] El problema de low-speed pre-ignition (LSPI) sigue siendo uno de los principales desafíos de los motores de inyección directa (DI) y encendido provocado (SI) debido a su potencial capacidad para dañarlos por detonación. ...

Most industrial applications of zeolites as catalysts rely on their Bronsted acidity properties. However, neither quantifying acid strength in solids nor correlating acidity with catalytic activity is straightforward. The ...

[EN] Many agrowastes are being used for energy production by combustion in power plants. This process generates huge amounts of ash, which has a potential pozzolanic activity for blending with Portland cement or hydrated ...

[EN] For several years, research has been devoloped in which agricultural waste are used as a pozzolanic addition in mortars and concretes , reducing the use of cement and thereby achieving economic and environmental ...