Oxides - Analysis
Electrical and dielectric analysis of phosphate based glasses doped with alkali oxides
... Thermal Analysis (DTA), X-ray powder diffraction (XRD), and Raman spectroscopy and the morphology by Scanning Electron Microscopy ...Raman analysis showed that the amount of alkali and niobium oxides ...
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Analysis of the possibility of obtaining super-paramagnetic powders based on Ferro oxides as precursor by MR contrast material synthesis
... The goetite (α-FeOOH) is a typical product of atmospheric corrosion on the steel’s surface. It can be used to protect the steel from further corrosion [4]. In the last years de- tailed investigations of goethite ...
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REPOSITORIO INSTITUCIONAL DA UFOP: Study of oxygen self-diffusion in oxides by ion beam techniques : comparison between nuclear reaction analysis and SIMS.
... Among the different techniques for surface charac- terization, two are able to perform depth profile analy- sis with isotopic sensitivity: nuclear reaction analysis[r] ...
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Albumin and fibronectin adsorption and osteoblast adhesion on titanium oxides
... In recent years a number of evidences clearly indicated that atomic force microscopy (AFM) can directly provide image of proteins in physiological conditions. 4,15,35-38,51 Although, it is quite difficult to achieve good ...
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Regional nitrogen oxides emission trends in East Asia observed from space
... are found in Japan and South Korea, which can be attributed to a combined effect of local environmental policy and global economic crises. Analysis of seasonal variation distinguishes between regions with dominant ...
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Stacks of alternating conductive and non-conductive oxides studied by ellipsometry
... This chapter summarizes all work done in an attempt to identify two materials i.e. a TSO and an IO, with both having the similar optical properties. First, in search of the ideal TSO, three different types of materials ...
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Modification of water glass with colloidal slurries of metal oxides
... The analysis of the technological properties of the sands with water glass shows that it is advisable to improve the strength p roperties of the sands by improving the cohesive and adhesive characteristics of the ...
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Effect of gadolinium on the catalytic properties of iron oxides for WGSR
... chemical analysis, thermogravimetry, differential scanning calorimetry, infrared spectroscopy, X-ray diffraction, Mössbauer spectroscopy, specific surface area measurements and thermoprogrammed ...
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Wear Assessment of Fe-TiC/ZrC Hardfacing Produced from Oxides
... Observations were conducted in an Olympus GX71 optical microscope and a Leica S440 scanning electron microscope (SEM) fitted with an Oxford Instruments X-Max energy dispersive X-ray (EDX) detector and Aztec software for ...
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Stability of metal oxides against Li/Na carbonates in composite electrolytes
... detailed analysis of the conductivity of the compos- ites and the individual components is useful at this point of ...of oxides and composites, respectively) should be ...
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Noble metal nanoparticles supported onto semiconducting oxides as catalysts for reduction reactions
... thermogravimetric analysis of our samples, Figure 5.4, displayed about 0.5 wt.% water content in the sample (first mass loss from 25°C to 200°C) and close to 2.0 wt.% of organic matter (second mass loss from 200°C ...
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Nitrogen oxides emission from two beech forests subjected to different nitrogen loads
... series analysis was used which revealed patterns that did not become apparent through simple regression mod- ...sion analysis, we would like to emphasize the potential of such models for data ...
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DISSERTAÇÃO_Quantification of soil oxides via handheld X-ray fluorescence spectrometry
... 2001). We conducted this work focusing on two factors: (i) soil packing prior to analysis and (ii) the soil matrix. Soil packing may be considered relevant if the high-cost X-ray thin-plastic film could be ...
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Thermal and chemical treatments for removal of alkali oxides of elephant grass ashes.
... THERMAL AND CHEMICAL TREATMENTS FOR REMOVAL OF ALKALI OXIDES OF ELEPHANT GRASS ASHES. Elephant grass ash (EGA) was produced at 700 °C, with two different treatments: hot water (EGAhw) or acid solution (EGAas). The ...
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Calculations of electronic structure and hyperfine parameters in oxides
... same analysis is performed with a hypothet- ical ferromagnetic state and the distortions almost vanish, with lower total energy predicted by ferromagnetic ...
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Nitrogen oxides measurements in an Amazon site and enhancements associated with a cold front
... increase in black carbon reinforces the suspicion of a transport of biomass burning products from the South advected by the frontal system. An increase in the particulate matter coarse mode of the aerosol particle ...
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IRON OXIDES IN SOILS
... iron oxides and organic matter, can be useful to develop effective strategies for sustainable management, especially in a scenario of increasing shortage of mineral phosphate ...iron oxides and organic ...
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Niobium-based oxides for oxidative and reductive photocatalytic reactions
... transmission electron microscopy (HRTEM) images were obtained using a FEI-TECNAI G2 F20 microscope operated at 200 kV. The samples were prepared for TEM analysis by depositing a drop of the colloidal alcoholic ...
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Perovskite-type oxides to no reduction with CO.
... 10 h. The catalysts were characterized by X-ray diffraction, temperature programmed reduction with hydrogen, nitrogen adsorption and chemical analysis. The nonstoichiometric oxygen was quantified by temperature ...
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LITHIUM CONTAINING MgAl MIXED OXIDES OBTAINED FROM SOL-GEL HYDROTALCITE FOR TRANSESTERIFICATION
... mixed oxides shows that most authors adopt a similar procedure for synthesis of such catalysts, in which the MgAl oxides are obtained by the thermal treatment of MgAl hydrotalcite synthesized by a ...
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