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A non-local delay differential system was developed by age-infected consideration to understand the interaction between tumor cells and oncolytic virus. The critical threshold value R 1 was obtained that dominates the dynamical behaviors of our model. By strongly ρ -persistent and Comparison theorem, the global stability and uniformly strongly persistent were investigated. Our global sensitivity analyses indicate that R 1 is most sensitive to virus clearance rate d while is least sensitive to viral life cycle τ. Finally, our model was used to fit with experimental data which indicates that viral life cycle τ plays a key role in data fitting. And the trained model shows perfect prediction in the testing data set with the coefficient of determination R 2 = 9 5. 5 5 %. [ABSTRACT FROM AUTHOR]

Pr and Nd co-doped Ce-Zr oxide solid solutions (CZPN) were prepared using co-precipitation and microemulsion methods. It is found that only using supercritical CO2 drying can result in a significant improvement of specific surface area and oxygen storage capacity at lower temperatures for CZPN after aging at 1000°C for 12 h in comparison with those using conventional air drying and even supercritical ethanol drying. Furthermore, the cubic structure was obtained in spite of the fact that the atomic ratio of Ce/(Ce+Zr+Pr+Nd) is as low as 29%. The high thermal stability can be attributed to the loosely aggregated morphology and the resultant Ce enrichment on the nanoparticle surface, which are caused by supercritical CO2 drying due to the elimination of surface tension effects on the gas-liquid interface. [ABSTRACT FROM AUTHOR]