30 research outputs found
Family health strategy and equity in prenatal care: a population based cross-sectional study in Minas Gerais, Brazil
Active removal of waste dye pollutants using Ta[sub]3N[sub]5/W[sub]18O[sub]49 nanocomposite fibres
A scalable solvothermal technique is reported for the synthesis of a photocatalytic composite material consisting of orthorhombic Ta3N5 nanoparticles and WOxâ€3 nanowires. Through X-ray diffraction and X-ray photoelectron spectroscopy, the as-grown tungsten(VI) sub-oxide was identified as monoclinic W18O49. The composite material catalysed the degradation of Rhodamine B at over double the rate of the Ta3N5 nanoparticles alone under illumination by white light, and continued to exhibit superior catalytic properties following recycling of the catalysts. Moreover, strong molecular adsorption of the dye to the W18O49 component of the composite resulted in near-complete decolourisation of the solution prior to light exposure. The radical species involved within the photocatalytic mechanisms were also explored through use of scavenger reagents. Our research demonstrates the exciting potential of this novel photocatalyst for the degradation of organic contaminants, and to the authorsâ knowledge the material has not been investigated previously. In addition, the simplicity of the synthesis process indicates that the material is a viable candidate for the scale-up and removal of dye pollutants on a wider scale
Atmospheric electrification in dusty, reactive gases in the solar system and beyond
Detailed observations of the solar system planets reveal a wide variety of local atmospheric conditions. Astronomical observations have revealed a variety of extrasolar planets none of which resembles any of the solar system planets in full. Instead, the most massive amongst the extrasolar planets, the gas giants, appear very similar to the class of (young) Brown Dwarfs which are amongst the oldest objects in the universe. Despite of this diversity, solar system planets, extrasolar planets and Brown Dwarfs have broadly similar global temperatures between 300K and 2500K. In consequence, clouds of different chemical species form in their atmospheres. While the details of these clouds differ, the fundamental physical processes are the same. Further to this, all these objects were observed to produce radio and X-ray emission. While both kinds of radiation are well studied on Earth and to a lesser extent on the solar system planets, the occurrence of emission that potentially originate from accelerated electrons on Brown Dwarfs, extrasolar planets and protoplanetary disks is not well understood yet. This paper offers an interdisciplinary view on electrification processes and their feedback on their hosting environment in meteorology, volcanology, planetology and research on extrasolar planets and planet formation
Analysis of the influence of low-power HeNe laser on the healing of skin wounds in diabetic and non-diabetic rats
Efeito do exercĂcio fĂsico contĂnuo e intervalado no peso e perfil bioquĂmico de ratas Wistar prenhes e consequĂȘncias no peso da prole
Cyanobacterial nitrogenases: phylogenetic diversity, regulation and functional predictions
History on the biological nitrogen fixation research in graminaceous plants: special emphasis on the Brazilian experience
Mudanzas de la fortuna y firmezas del amor
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Comedia famosa, El mas valiente andaluz Anton Bravo / de Don Christoval de Monroy y Sylva
CCPB000657206-5Pie de imp. tomado de colofĂłnSign.: A-D4En port. sello: "Se hallara en la Imprenta de Orga, calle de las Barcas, en Valencia, nÂș 13