Results 41 to 50 of about 131,717 (256)
Advanced Functional Materials, EarlyView.Redox dual‐defects (Cs substitution and O vacancies) in 2D hydrated WO3 steer O2 activation toward selective singlet oxygen evolution. WO‐CO achieves 8.6–15.8 times higher 1O2 production than single‐defect or pristine catalysts, enabling efficient pollutant mineralization via a pathway‐selective photocatalytic mechanism.
Sheng‐Qi Guo +8 more
wiley +1 more source
El carbón mineral y su régimen jurídico
Revista de la Facultad de Derecho y Ciencias Políticas, 1988 Para nadie es desconocida la importancia que a través de la historia han tenido los minerales; importancia que va desde lo meramente económico hasta lo sustancialmente estratégico; como instrumento de presión política en el caso de los Hidrocarburos o ...
Francisco Zapata Ospina
doaj
Advanced Functional Materials, EarlyView.Diagnostic analysis via the heterojunction validation funnel. The funnel illustrates the hierarchical stratification of 30 reported Type‐II systems based on the three‐phase, seven‐step diagnostic framework. Complete validation through all phases is achieved by only 3.3% of systems, while 96.7% lack full mechanistic validation, revealing a pervasive ...
Ki‐Hyun Kim
wiley +1 more source
, 2002 Resumen: La importancia del uso del carbón en el mundo puede verse en las figuras 1 y 2, en la que se muestran la producción y las reservas mundiales de carbón, lo mismo que el consumo del carbón en el mundo en comparación con otras fuentes de energía.
Londoño Giraldo, Carlos Arturo
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Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films
Advanced Functional Materials, EarlyView.This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge +4 more
wiley +1 more source
Fertilizer impacts on soil aggregation and aggregate-associated organic components
Plant, Soil and Environment, 2018 A 5-year (2012-2016) field experiment was conducted to investigate the impacts of different fertilizer treatments (no fertilizer, mineral and organic fertilizer) on organic carbon and soil water-stable aggregates in a North China Plain Vertisol. Compared
Zhanhui ZHAO +4 more
doaj +1 more source
Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents
Advanced Functional Materials, EarlyView.A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster +11 more
wiley +1 more source
Chemical Maturation Controls Bioavailability of Fetuin‐A‐Mineral Complexes in Biomineralization
Advanced Functional Materials, EarlyView.The role of Fetuin‐A‐mineral complexes in matrix mineralization is unclear. Here, Fetuin‐A‐mineral complexes were found to exist in functionally distinct states that determine mineral bioavailability: chemically labile calciprotein monomers directly mineralize collagen fibrils, while chemically matured primary calciprotein particles require cellular ...
Judith M. Schaart +8 more
wiley +1 more source
Ciencia e Ingeniería, 2017 Se realizó un estudio de factibilidad para la creación de una planta piloto productora de briquetas a base de carbón mineral en el municipio de Albania, La Guajira.
Yoma Mendoza G. +3 more
doaj
Consumo energético de la molienda del mineral laterítico con carbón bituminoso aditivo [PDF]
, 2017 Trabajo de DiplomaEn el presente trabajo se determina el efecto de la sustitución del petróleo aditivo por el carbón bituminoso en el consumo energético de los molinos de la empresa Comandante Ernesto Che Guevara. Para ello se tomaron muestras de mineral,
Torres Guzmán, Marianna
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