Results 111 to 120 of about 1,296,721 (228)
Brazilian Journal of Geology: The Monte de Trigo alkaline suite is a SiO2-undersaturated syenite-gabbroid association from the Serra do Mar alkaline province. Eudialyte-group minerals (EGMs) occur in one nepheline microsyenite dyke, associated with aegirine-augite, wöhlerite ...
Gaston Eduardo Enrich Rojas +3 more
doaj +1 more source
Source characterization variscite of Pico Centeno (Encinasola, Huelva) and study of origin of the Southwest peninsular accounts [PDF]
, 2010 En este trabajo estudiamos la explotación e intercambio de variscita de Pico Centeno (Encinasola, Huelva). El análisis XRD y XRF del mineral recogido en Pico Centeno durante las prospecciones arqueológicas proporcionan una impronta físico-química para ...
Hurtado Pérez, Víctor +2 more
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Polymers for Advanced Technologies, Volume 37, Issue 2, February 2026.ABSTRACT High‐resolution, biocompatible scaffolds are essential for reproducible tissue engineering and remain challenging to fabricate with vat photopolymerization due to cure‐depth control and limited bioactivity of neat polymers. This work investigated the mechanical, surface, and biological properties, as well as the high‐resolution 3D printability,
Thiago Nunes Palhares +8 more
wiley +1 more source
Los nuevos conceptos en oxido-reducción y la respiración animal
Revista de la Facultad de Medicina, 1942 En Química General, una oxidación consiste en la pérdida de uno o más electrones, o sea en la pérdida de un quantum o varios quanta de electricidad negativa. Y una reducción es lo contrario: la adquisición de uno o más electrones. La anterior explicación
Aristides García Torres
doaj
Valorization of carbohydrates: dehydration of sorbitol to isosorbide in the presence of acidic zeolites [PDF]
, 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
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Journal of Food Science, Volume 91, Issue 2, February 2026.ABSTRACT Global food systems face increasing environmental, ethical, and health‐related challenges, prompting the search for sustainable protein alternatives. Cultured meat has emerged as a promising option, offering potential benefits such as reduced environmental impact, improved animal welfare, and nutritional customization.
Ana Carolina Agne Ferreira Zão +3 more
wiley +1 more source
Brazilian Journal of Geology: Magmatism associated with the Alto Paranaíba structural high comprises kimberlites, kamafugites, and alkaline complexes, forming an approximately 400 x 150 km NW-SE belt in the southern São Francisco Craton.
Rogério Silvestre Pereira +3 more
doaj +1 more source
Coloration Technology, Volume 142, Issue 1, Page 156-169, February 2026.Abstract This study aims to optimise the dyeing process of cotton fabrics using Mexican cochineal (Dactylopius coccus Costa). The objective is to obtain purple hues through the design of experiments and by using multivariate analysis. Plackett–Burman experimental designs and the response surface method were used to systematically optimise the dyeing ...
Ernesto Olvera‐Quintanar +3 more
wiley +1 more source
O-Ethyl S-{(S)-1-oxo-1-[(R)-2-oxo-4-phenyloxazolidin-3-yl]propan-2-yl} carbonodithioate
Acta Crystallographica Section E, 2014 In the title compound, C15H17NO4S2, synthesized by addition of O-ethylxanthic acid potassium salt to a diastereomeric mixture of (4R)-3-(2-chloropropanoyl)-4-phenyloxazolidin-2-one, the oxazolidinone ring has a twist conformation on the C—C bond.
J. Pablo García-Merinos +3 more
doaj +1 more source
Journal of Materials Research and Technology, 2019 The present study evaluated the potential of bioclastic granules (BG) from Lithothamnium calcareum algae as a sorbent material for the removal of Ni(II) from aqueous solutions, through experimental batch tests.
Diego Macedo Veneu +4 more
doaj +1 more source