In this experimental study, effects of H2O on the use ethanol as reducing agents were investigated Ag-Pt-W-Ti/Cordierite catalyst. catalyst was synthesized using impregnation method for selective catalytic reduction (SCR) NOx. To investigate addition NOx conversion ratios, tests carried out at 200-270 ° C under 30000 h-1 GHSV three different reductants (ethanol, 5 %H2O - 95 %ethanol, 10 90 %eth...

objective: the aim of this study was to investigate the translucency of resin-modified glass-ionomer cements (rmgic) and polyacid-modified composite resin (pcmr) over a period of one year. materials and methods: the study was done on three rmgic (fuji ii lc, photac-fil aplicap and vitremer) and one pcmr (dyract). a conventional gic (fuji cap ii) and two composite resins (tetric and z 100) were ...

background: the clinical success of sandwich technique depends on the strength of resin-modified glass ionomer cement (rmgic) bonding to both dentin and resin composite. therefore, the shear bond strength (sbs) of resin composite bonded to rmgic utilizing different resin adhesives versus a gic-based adhesive was compared. materials and methods: in this in vitro study, 84 holes (5×2 mm) were pre...

This article explores the factors that influence color of blue iolite, which is gem-quality variety cordierite mineral. The X-Rite SP62 portable spectrophotometer was used to measure in CIELAB space. ED-XRF and UV–vis were for analysis. results show iolite contains chromophore elements Fe Mn, but effect on not significant due low Mn content. lightness L* hue angle h° are mostly determined by it...

 Oxyfluoride glass ceramics containing CaF2nano-crystals doped with Y3+ ions were prepared by one-step crystallization of SiO2- Al2O3- CaO- CaF2 glasses at different temperatures. X- ray diffraction (XRD) results have revealed that CaF2 was the only precipitated crystalline phase in glass ceramic samples. According to the XRD results, a glass ceramic was selected as the best sample in order to ...