Results 81 to 90 of about 6,762 (164)

Estudio del comportamiento térmico del polvo de aluminio estabilizado con el yeso

open access: yesRevista de Metalurgia, 2005
El polvo de aluminio (pAl) es un residuo peligroso procedente de la metalurgia secundaría del aluminio. Con objeto de reducir la reactividad del mismo, en el CENIM se ha desarrollado un proceso de estabilización/solidificación mediante su fraguado con ...
A. López-Delgado   +5 more
doaj   +1 more source

Gas phase selective hydrogenation of furfural to furfuryl alcohol and 2-methylfuran over Cu-CeO2 coprecipitated catalysts [PDF]

open access: yes, 2015
Furfural is an important chemical derived from lignocellulosic biomass, in particular from C5 sugars like xylose, and it is considered as a platform molecule of great potential for the synthesis of a broad spectrum of chemicals.
Cecilia, Juan Antonio   +5 more
core  

Mineralogía y génesis de las arcillas de la Unidad de Almarchal (series flysch del Campo de Gibraltar. S de España)

open access: yesEstudios Geologicos, 1990
El estudio de la fracción fina de la Unidad de Almarchal (series flysch del Campo de Gibraltar) ha permitido poner de manifiesto varias asociaciones mineralógicas relacionadas estrechamente con los tipos litológicos presentes: 1.
M. D. Ruiz Cruz   +2 more
doaj   +1 more source

Valorization of carbohydrates: dehydration of sorbitol to isosorbide in the presence of acidic zeolites [PDF]

open access: yes, 2015
Currently, the growing interest in the use of biomass as a renewable and sustainable raw material for the production of energy, chemicals and biofuels is driving the development of new catalytic processes and technologies for its conversion.
Ginés-Molina, María José   +5 more
core  

In-situ early age hydration of cement-based materials by synchrotron X-ray powder diffraction [PDF]

open access: yes, 2015
Cement based binders are building materials of worldwide importance. Since these samples are very complex, the knowledge/control of their mineralogical composition are essential to design and predict materials with specific/improved performance. Rietveld
Chou, K. W.   +8 more
core  

Caracteres tectónicos de los metasedimentos del oeste de la provincia de Salamanca

open access: yesEstudios Geologicos, 1986
Se exponen en este trabajo los principales caracteres tectónicos de los metasedimentos situados al O de la provincia de Salamanca, en el área de Ciudad Rodrigo. En términos generales.
A. Martín-Izard
doaj   +1 more source

Nuevos recursos audiovisuales para la enseñanza de la cristalografía: cristales y difracción [PDF]

open access: yes, 2018
Depto. de Mineralogía y PetrologíaFac.
Crespo López, Ángel   +6 more
core   +1 more source

Quantitative disentanglement of nanocrystalline phases in cement pastes by synchrotron ptychographic X-ray tomography

open access: yesIUCrJ, 2019
Mortars and concretes are ubiquitous materials with very complex hierarchical microstructures. To fully understand their main properties and to decrease their CO2 footprint, a sound description of their spatially resolved mineralogy is necessary ...
Ana Cuesta   +7 more
doaj   +1 more source

Mineral carbonation of ceramic brick at low pressure and room temperature. A simulation study for a superficial CO2 store using a common clay as sealing material [PDF]

open access: yes, 2018
This research explores the possibilities of CO2 sequestration on ceramic bricks in a short time and at surface conditions. The experiment was carried out in a specially designed reaction chamber, filled with brick wastes and sealed with common clays. The
Aparicio Fernández, Patricia   +2 more
core   +1 more source

Effects of foliar fertilization of a biostimulant obtained from chicken feathers on maize yield [PDF]

open access: yes, 2018
Due to the important contribution that it makes to human nutrition, maize is one of the most widely-consumed cereals in the world. There is, therefore, high demand for fertilizers that will maintain maize production at both high yield and quality levels.
Paneque Macías, Patricia Isabel   +3 more
core   +1 more source

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