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Nitrate contamination of a rural aquifer and accumulation in the unsaturated zone
(Elsevier Science, 2002-09)
Groundwater contamination was studied in a rural setting of the Upper Pantanoso Stream Basin (UPSB) in the southeast of Buenos Aires Province, Argentina, where potential contaminant sources include inorganic fertilizer. ...
Photochemistry and absorption cross-sections temperature dependence of trifluoromethoxycarbonyl peroxy nitrate (CF3OC(O)OONO2)
(Elsevier Science Sa, 2009-06)
The photochemical rupture of CF3OC(O)OONO2 at 254 nm leads to the formation of NO2 + CF3OC(O)OO, and NO3 + CF3OC(O)O radicals. The study carried out at 297, 273 and 253 K leads to a quantum yield φ{symbol}N O3 = 0.18 ± ...
Nitrate pollution in dairy farms and its impact on groundwater quality in a sector of the Pampas plain, Argentina
(Springer, 2020)
The aim of this work is to evaluate the nitrate content and its impact on groundwater quality used for supply in dairy farms in a sector of the Pampas Plain in relation to specific point sources of pollution. Samples were ...
Human Mn-superoxide dismutase inactivation by peroxynitrite: A paradigm of metal-catalyzed tyrosine nitration: In vitro and in vivo
(Royal Society of Chemistry, 2018-05)
Human MnSOD is a homotetramer and represents an essential mitochondrial antioxidant enzyme, which catalyzes the dismutation of superoxide radicals (O 2 - ) at near diffusion-controlled rates. Under a variety of disease ...
EPR and redox properties of periplasmic nitrate reductase from Desulfovibrio desulfuricans ATCC 27774
(Springer, 2006-07)
Nitrate reductases are enzymes that catalyze the conversion of nitrate to nitrite. We report here electron paramagnetic resonance (EPR) studies in the periplasmic nitrate reductase isolated from the sulfate-reducing bacteria ...
Tyr-nitration in maize CDKA;1 results in lower affinity for ATP binding
(Elsevier Science, 2020-10)
Cyclin-dependent kinase A (CDKA) is a key component for cell cycle progression. The catalytic kinase activity depends on the protein's ability to form an active complex with cyclins and on phosphoregulatory mechanisms. ...
Controlled deposition of Pd and in on carbon fibers by sequential electroless plating for the catalytic reduction of nitrate in water
(Elsevier Science, 2016-03)
Catalysts containing 1.8 wt.% of Pd and different In loadings were prepared by sequential electroless plating on activated carbon felts (ACF). Homogeneous structures were obtained, with In particles deposited at the top ...
Nitric oxide emission during the reductive heterogeneous photocatalysis of aqueous nitrate with TiO2
(Royal Society of Chemistry, 2015-10)
For the first time, nitric oxide (NO), a precursor of nitrogen dioxide (NO2, a NIOSH-listed atmospheric pollutant), has been found to be one of the final products of the photocatalytic reduction of nitrate in water using ...
Diffusion of nitrite and nitrate salts in pork tissue in the presence of sodium chloride
(Wiley Blackwell Publishing, Inc, 2002-08)
The objective of the present work was to analyze the effect of NaCl concentration on the diffusion coefficients of NaNO2 and KNO3 in pork tissue using unsteady techniques. Concentrations of nitrite and nitrate as a function ...
Catalysts of alkaline nitrates supported on oxides for the diesel soot combustion. Deactivation by hydro-treatment and CO2.
(Elsevier, 2013-01-20)
The deactivation of supported catalysts CsNO3 and LiNO3 for diesel soot combustion is studied in this work. The effect of hydro-treatment at high temperature and presence of CO2 in feed flow were investigated. Catalysts ...