The sonocatalytic activity of nano-sized ZnO powder was studied via the degradation of the Direct Blue 71 azo dye. The nano-sized ZnO powder that was selected was the same as that which was synthesized and characterized in our previous study. The influences of six operational parameters including the initial pH, the initial concentration, the dose of sonocatalyst, the ultrasound frequency, the ...

Enterovirus 71 (EV71) infection remains a public health problem at a global level, particularly in the Asia-Pacific region. The infection normally manifests as hand-foot-mouth disease; however, it is capable of developing into potentially fatal neurological complications. There is currently no approved vaccine or antiviral substance available for the prevention or treatment of EV71 infection. T...

Enterovirus 71 (EV71) is a growing public health concern, especially in Asia. A surge of EV71 cases in 2008 prompted authorities in China to go on national alert. While there is currently no treatment for EV71 infections, vaccines are under development. We developed a computer simulation model to determine the potential economic value of an EV71 vaccine for children (<5 years old) in China. Our...

This paper presents a deep investigation of two open clusters, Haffner 22 and Melotte 71, using astrometric photometric data from Gaia EDR3. We identified 382 597 most probable cluster members with membership probability higher than 50 percent. Mean proper motion in RA DEC are estimated as -1.63 2.889 respectively for -2.398 4.210 71. A comparison observed CMDs theoretical isochrones leads to a...

Introduction: Textile industries produce large volume of colored dye effluents which are toxic and removal of dyes from wastewater is a significant environmental issue. Advanced oxidation process (AOPs) is alternative method for the complete degradation many organic pollutants. ZnO and TiO2 are important photocatalysts with high catalytic activity that have attracted much research attention. ...