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Polycrystalline transparent In 2 O 3 semiconductive ceramics are successfully fabricated by oxygen atmosphere sintering for the first time. The starting rounded In 2 O 3 particles are obtained via pyrolyzing the nanoplate-like hydrated basic sulfate precursor prepared by a chemical precipitation route using hexamethylenetetramine as the precipitant. The silica additive dissolves into the In 2 O 3 lattice to form an interstitial solid solution, which promotes the diffusion rate during high-temperature densification process and thus helps to achieve good optical quality for In 2 O 3 ceramics. The created interstitial oxygen further compensates the oxygen vacancy in the ceramic body to result in a higher resistivity and lower carrier concentration / carrier mobility. The optical qualities of In 2 O 3 ceramics are also found to have slight effects on the resistivity, carrier mobility, carrier concentration, and Hall coefficient. Image, graphical abstract [ABSTRACT FROM AUTHOR]

The natural volatile oil has high medicinal value, but the extraction and separation technology were limited by low composition, complex composition, and strong volatility. This study validated the feasibility of membrane separation technology for enriching volatile oil from the aspects of membrane separation efficiency, volatile oil components, and drug efficacy. A shellac coated alumina ceramic (lac@AC) membrane with irregular nanoneedle-like surface structure was prepared to enrich the volatile oil from vinegar-processed Cyperi Rhizoma (vpCR). Compared to the alumina ceramic (AC) membrane, the lac@AC membrane exhibited 29.77 % and 98.05 % increase in water and emulsion flux, respectively. Meanwhile, the oil rejection of lac@AC membrane increased 26.29 %. According to the gas chromatography-mass spectrometry analysis, the similarity between the volatile oils obtained by membrane separation and the traditional steam distillation method was higher than 99.5 %. In addition, antibacterial experiments showed that the volatile oil obtained by membrane separation has similar antibacterial effects to the volatile oil obtained by steam distillation. Component analysis and pharmacodynamic analysis both demonstrated the feasibility of using membrane separation to obtain vpCR volatile oil. This study offers a technical reference for the efficient, high-quality, and environmentally friendly extraction of natural plant oils with complex ingredients. [Display omitted] [ABSTRACT FROM AUTHOR]