Results 81 to 90 of about 184,175 (290)
Revista Facultad de Ingeniería Universidad de Antioquia, 1998 En este artículo se hace una revisión sobre los principales combustibles que se han propuesto últimamente para disminuír las emisiones de compuestos contaminantes a la atmósfera, producidos como consecuencia del uso de la gasolina común. En cada caso se
Consuelo Montes de Correa +1 more
doaj +1 more source
Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons
Advanced Materials, EarlyView.Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner +9 more
wiley +1 more source
The beginnings and dissemination of the crisis of mortgage credits in the USA. Risks in the evolution of Romanian economy [PDF]
The focus of the research is the origin and the dissemination of the crisis of mortgage credits on the most dynamic financial market of the contemporary world. At the same time, the negative impact that could affect the emergent economies, especially the
Constantin IONETE
core
Advanced Materials, EarlyView.This table of contents illustrates that the mechanism for mitigating Sr segregation depends strongly on the chemistry of the coating layer. HfO2 electrostatically stabilizes the surface by lowering the surface oxygen vacancies, which serve as the driving force for Sr migration. On the other hand, Al2O3 and Fe2O3 react with segregated Sr to form Sr‐Al‐O
Jongsu Seo +8 more
wiley +1 more source
Control de un sistema fotovoltaico con asistencia de red para la producción de hidrógeno [PDF]
, 2013 La capacidad de almacenamiento y transporte de energía de alta calidad hace del hidrógeno un excelente vector energético. Debido a que no se encuentra naturalmente aislado, este elemento requiere una determinada cantidad de energía para su extracción de ...
Cendoya, Marcelo G. +4 more
core
Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing
Advanced Materials, EarlyView.Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria +6 more
wiley +1 more source
Telemática, 2023 En el mundo existen 1150 millones de personas, entre adultos y niños, con alguna diversidad funcional; y por otro lado el envejecimiento poblacional, sólo en Cuba alcanza el 20%, lo que hace que necesiten dispositivos que los asistan y de sistemas para ...
Juan Carlos Cruz +1 more
doaj
THE INTERNATIONAL TRADE AS AN ELEMENT OF THE SUSTAINABLE DEVELOPMENT [PDF]
For the beginning, the paper deals with the necessity of the participation to the world division of labour in order to prevent the growth of the disparities between the countries.
Romeo Victor IONESCU
core
Validación experimental de la relación de compresión para varios combustibles a utilizar en un motor de combustión interna [PDF]
, 2017 El presente trabajo tiene como objetivo principal mostrar la concordancia existente entre la relación de compresión y el desempeño un motor de combustión interna. Se investigó acerca del desempeño y las características operacionales de los motores cuando
Arcila Agudelo, Andrés +1 more
core
The Possibility of New Complex Magnet Materials
Advanced Materials, EarlyView.The quest for stronger magnets enters a new era. With the developments of AI‐driven materials discovery, computational prediction of magnetic properties, and autonomous laboratories, researchers can now explore millions of untested structures. Discovery of next‐generation ultra‐powerful magnets – critical for electric vehicles, renewable energy, and ...
G. Jeffrey Snyder
wiley +1 more source