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Polycyclic aromatic hydrocarbons in milk powders marketed in Uruguay
(Taylor & Francis, 2017-07)
Polycyclic aromatic hydrocarbons (PAHs) occurrence in forty-four samples of milk powder, marketed in Uruguay, was determined. A high-performance liquid chromatography (HPLC) method was applied with fluorescence detector ...
Cellular effects of glycine and trehalose air-polishing powders on human gingival fibroblasts in vitro
(2022-02-01)
Objectives: Air-polishing has been used in the treatment of periodontitis and gingivitis for years. The introduction of low-abrasive powders has enabled the use of air-polishing devices for subgingival therapy. Within the ...
Influence of milling time on mechanically assisted synthesis of Pb0.91Ca0.1TiO3 powders
(Elsevier B.V., 2007-01-01)
Pb0.91Ca0.1TiO3 powders (PCT) were prepared by mechanochemical synthesis from high-energy ball milling process. The influence of milling time on the phase formation, crystal structure, specific surface area, density and ...
Effects of powder preparation and sintering procedure on microstructure and dielectric properties of PLZT ceramics
(Int Inst Science Sintering (i I S S), 2003-09-01)
PLZT ceramics belong to one of the very important groups of functional materials that make a basis for the production of a large range of electronic devices. The microstructure and properties of ceramics depend on the ...
Synthesis and sintering of ZrO2-CeO2 powder by use of polymeric precursor based on Pechini process
(Kluwer Academic Publ, 2001-01-01)
Nanocrystalline ZrO2-12 mol % CeO2 powders were synthesized using a polymeric precursor method based on the Pechini process. X-ray diffraction (XRD) patterns showed that the method was effective to synthesize tetragonal ...
Mechanisms behind blue, green, and red photoluminescence emissions in CaWO4 and CaMoO4 powders
(American Institute of Physics (AIP), 2007-07-30)
A combined experimental and theoretical study was conducted to analyze the photoluminescence (PL) properties of ordered and disordered CaWO4 (CW) and CaMoO4 (CM) powders. Two mechanisms were found to be responsible for ...
Seeding of PMN powders made by the Pechini method
(Elsevier B.V., 2001-01-01)
The partial oxalate method, with the columbite route, associated with the Pechini method, was used to obtain a very fine ceramic powder at low temperature. Using this route it was possible to obtain a very reactive powder ...
Preparation and characterization of nanosized SrBi2Nb2O9 powder by the combustion synthesis
(Elsevier B.V., 2003-06-01)
This work presents the preparation of SrBi2Nb2O9 (SBN) directly by the combustion synthesis. Strontium nitrate, niobium ammonium oxalate (NH4H2[NbO-(C2O4)(3)].3H(2)O) and bismuth oxide were used as oxidant reactants and ...
Visible PL phenomenon at room temperature in disordered structure of SrWO4 powder
(Springer, 2005-01-01)
The SrWO4 (SWO) powders were synthesized by the polymeric precursor method and annealed at different temperatures. The SWO structure was obtained by X-ray diffraction and the corresponding photoluminescence (PL) spectra ...