Peroxodisulfate (PDS), peroxymonosulfate (PMS), and hydrogen peroxide (H2O2) might coexist in a persulfate system. It leads to the mutual interference concentration determination due their similar structures. Simultaneous detection of three peroxides involves limited reporting. Herein, multi-step iodometry was established simultaneously determine concentrations PDS, PMS, H2O2 coexisting solutio...

Grey mold, caused by Botrytis cinerea, is the most important pre-harvest and post-harvest disease of pepper. The leads to huge losses in quality yield Synthetic fungicides should not be used because their harmful residues fruits postharvest. Hence, alternative chemicals have gained more importance for human health now-a-days. In this study, postharvest effectiveness eugenol sodium bicarbonate (...

Understanding how soil phosphorus (P) fractions change is critical to achieve more efficient P use in a highly P-sorbing calcareous soil. The fields were managed without or with annual fertilizer (40 kg ha? 1), continuously growing sole cropping intercropping of maize and faba bean. Soil samples (0–200 mm) collected at the start experiment eight years later, we evaluated using sequential fracti...

The hydrothermal reduction of CO2 captured in aqueous solutions using metal reductants is a promising novel approach that achieves high yields conversion and selectivity, but it presents the limitation temperatures needed for reaction to take place. In this work, experiments combining several reductant metals (Zn, Al Fe), catalysts (Pd/C, Ni, Cu, Fe2O3 Fe3O4) (200, 250 300 ºC) were performed op...

The hemisynthesis of the naturally occurring bioactive flavonoid glycoside icariin (1) has been accomplished in eleven steps with 7% overall yield from kaempferol. The 4'-OH methylation of kaempferol, the 8-prenylation of 3-O-methoxymethyl-4'-O-methyl-5-O-prenyl-7-O-benzylkaempferol (8) via para-Claisen-Cope rearrangement catalyzed by Eu(fod)3 in the presence of NaHCO3, and the glycosylation of...

an airlift-type activated sludge reactor using a sponge support medium was fed with wastewater containing 500 mg-n/l of nh4 +-n. in order to establish partial nitrification, the reactor was kept at 35°c. moreover, the reactor was started up with the nahco3 solution as an alkali agent to supply inorganic carbon for enhancement of partial nitrification. the partial nitrification was established d...