A procedure was developed for the rapid analysis of titanium dioxide (TiO2) concentrations in feed and fecal samples. Samples were digested in concentrated H2SO4 for 2 h, followed by addition of 30% H2O2, and absorbance was measured at 410 nm. Standards were prepared by spiking blanks with increasing amounts of TiO2, resulting in a linear standard curve. Complete analysis using this procedure c...

Antiferromagnet does not show the net magnetization, whereas finite uncompensated moment can residue at surface. On surface of magnetoelectric antiferromagnet, boundary magnetization acquire magnetic response. In this paper, we address response in Pt/magnetoelectric Cr2O3/Pt epitaxial trilayer based on anomalous Hall effect (AHE) and soft x-ray circular dichroism (XMCD). Decreasing Cr2O3 thickn...

In this work we perform a theoretical study of dehydrogenation process CH4 on O2– in both molecular and dissociative states - previously adsorbed Cr2O3(0001). Calculations are based Density Functional Theory (DFT). The results show the methanol formation form adsorption O2 state with formationenergy5:14 eV. Also formaldehyde was formed by reaction CH2with O2(Eads=6:09 eV) dioxymethylene Cr2O3(0...

1 ide (mineral name: eskolaite) for the glass tank's lining. Due to its low solubility in the glass melt, the corrosion resistance of the fireproof material is remarkably improved. Though, a high commodity price and an extensive preparation and processing causes a high price. That condition poses the question, how high or low the eskolaite content has to be, depending on its position in the gla...

Iran’s Sarcheshmeh copper industries with an annual production of 120,000 tones are the biggest of it’s kind in South Asia. The main method of production is pyrometallurgical matte making in two reverberatory furnaces which use direct–bond magnesite-chromite refractories supplied by German and Austrian companies. Following a recent major overhaul, bricks in contact with slag, matte and furnace ...

Results of experiments carried out on the tilapiine fish Oreochromis aureus (Steindachner) to evaluate the method used in the determination of the apparent dry matter and nutrient digestibilities of an ingredient, together with validity of estimations based on day and night collection of faeces, and internal and external markers, are presented. The apparent dry matter and protein digestibilitie...

Ti1−xCrxN thin-film samples were sputter-deposited with lateral composition gradients x = 0.1–0.9 across each sample. In order to determine the effect of Cr content on oxidation, samples were air-oxidized at temperatures ranging from 650 to 950 °C. The extent and type of oxide formed was characterized using X-ray diffraction. Only minor oxidation was observed for the 650–750 °C temperature rang...