This study presents Pb(II) recovery/removal from water solutions using two different commercial ion-exchange resins, i.e., Dowex G-26 with sulfonic functional group and Puromet™ MTS9570 phosphonic groups. Overall, 100% by both resins was obtained at solution pH 3.5, resin dosage 25 g/L, adsorption time 30 min, room temperature, initial concentration 1000 mg/L. Langmuir, Freundlich, Temkin isoth...

The COVID-19 pandemic has disrupted various levels of society. use masks is essential in preventing the spread by identifying an image a person using mask. Although only 23.1% people correctly, Artificial Neural Networks (ANN) can help classify good to slow Covid-19 virus. However, it requires large dataset train ANN that correctly. MaskedFace-Net suitable consisting 137016 digital images with ...

the polymer supported hypochlorite ion is a facile selective oxidizing agent for the oxidation of various alcohols to aldehydes and ketones. similarly is successfully oxidizes various hantzsch type 1,4- dihydropyridines to corresponding pyridines.