نتایج جستجو برای: nanocrystalline magnesium aluminate

تعداد نتایج: 49309  

Journal: :Metals 2022

Identification and characterization play an essential role in the study of non-metallic inclusions (NMIs) monitoring steel casting process product quality. This uses Raman spectroscopy, a versatile, relatively fast, non-destructive technique for characterizing oxide sulfide-based inclusion phases samples. The relative peak intensities positions were used to qualitatively estimate Al2O3, CA, C12...

2014
Matthias Weil

The title compound, di(strontium/lead) hexa-aluminate, is a member of the solid solution series (Sr2-x Pb x )Al6O11. It contains two statistically occupied M (2+) (M = Sr, Pb) sites [both with site symmetries ..m; Sr:Pb occupancy ratios = 0.756 (2):0.244 (2) and 0.8968 (19):0.1032 (19)] that are located in the voids of an aluminate framework. The M (2+) sites are surrounded by six and seven O a...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Benjamin J Smith Aditya Rawal Gary P Funkhouser Lawrence R Roberts Vijay Gupta Jacob N Israelachvili Bradley F Chmelka

Sugar molecules adsorbed at hydrated inorganic oxide surfaces occur ubiquitously in nature and in technologically important materials and processes, including marine biomineralization, cement hydration, corrosion inhibition, bioadhesion, and bone resorption. Among these examples, surprisingly diverse hydration behaviors are observed for oxides in the presence of saccharides with closely related...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2012
Benjamin J Smith Lawrence R Roberts Gary P Funkhouser Vijay Gupta Bradley F Chmelka

Glucose, maltodextrin, and sucrose exhibit significant differences in their alkaline reaction properties and interactions in aluminate/silicate cement slurries that result in diverse hydration behaviors of cements. Using 1D solution- and solid-state (13)C nuclear magnetic resonance (NMR), the structures of these closely related saccharides are identified in aqueous cement slurry solutions and a...

Journal: :Plant physiology 1990
T B Kinraide

Dissolved aluminum (III) in acidic soils or culture media is often rhizotoxic (inhibitory to root elongation). Alkaline solutions of Al are also sometimes rhizotoxic, and for that reason toxicity has been attributed to the aluminate ion, Al(OH)(4) (-). In the present study, seedlings of wheat (Triticum aestivum L. cv Tyler) and red clover (Trifolium pratense L. cv Kenland) were cultured in aera...

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