Asymmetric effect of crude oil price on the quality of environment in Nigeria: An application of non-linear ARDL

The study aimed at examining the asymmetric effect of crude oil price on the quality of environment in Nigeria.The study utilizes the time series form of annual data from 1970 to 2019 and applies the model of NARDL (Non-Linear ARDL) to determine the short-run and long-run asymmetries.The results revealed that positive shocks in crude oil price redu

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Effect of La2O3 on the corrosion resistance of alumina ceramic

Alumina ceramics are widely used because of chemical corrosion resistance.Although alumina ceramics can resist many strong acids and organic acids, be corroded easily by HF due to silicon components in raw materials.This work aimed to reveal the effect of La2O3 on HF/HCl resistance of the alumina ceramic containing SiO2.The X-ray diffractometer (XR

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