The experiment of Fe-Beta catalysts modified by Ce with incipient wetness impregnation methods was carried out for the selective catalytic reduction NOx NH3. characteristics catalyst before and after hydrothermal treatment were evaluated changes active sites, acid sites pore structure. results showed that conversion from [Fe2+-OX]+ to [HO-Fe3+-OX]+ during reaction aging promoted gradual dehydro...

Urate oxidase is a peroxisomal enzyme with four equal subunits that convert uric acid to allantoin, more soluble metabolite for excretion. The usage of uricase as drug in medicine treat hyperuricemia. Many microorganisms have been used production such Streptomyces exfoliates, Pseudomonas aeruginosa, and Aspergillus flavus. In this study, soil samples were collected then cultured screening mediu...

in order to study the effect of salinity stress and nitrogen forms on nitrogen remobilization from root to shoot following defoliation and shoot dry matter production, a research in the form of factorial experiment based on randomized block, was designed in three replications. treatments include: 1) nitrogen forms containing a) biological n fixation (n1), b) 6mm nh4no3(n2), c) biological n fixa...

PMCAMx-2008, a three dimensional chemical transport model (CTM), was applied in Europe to quantify the changes in fine particle (PM2.5) concentration in response to different emission reductions as well as to temperature increase. A summer and a winter simulation period were used, to investigate the seasonal dependence of the PM2.5 response to 50 % reductions of sulfur dioxide (SO2), ammonia (N...

Fertilization with nanoparticles offers alternatives to improve the efficiency of nutrient absorption in a sustainable way crops. The objective this work was study influence foliar application zinc-molybdenum nanofertilizer (Nano ZnMo) on nitrogen (N) use (NUE), as well yield parameters and N assimilation green bean plants cv. “Strike”. Three doses Nano ZnMo (0, 4 8 ppm) were applied combinatio...

The role of Cu species in ion-exchanged IM-5 zeolite (Cu-IM-5) regarding the performance selective catalytic reduction (SCR) NOx with NH3 (NH3-SCR) and reaction mechanism was studied. Based on H2 temperature-programmed (H2-TPR) electron paramagnetic resonance (EPR) results, Cu–O–Cu isolated are suggested as main existing Cu-IM-5 active for SCR reaction. show a good NH3-SCR activity at temperatu...