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variety of rock and soil minerals in oxidation states of two and three. It has been proven that at low levels, iron is an essential element in the diet while at higher concentrations, it is toxic. A variety of sensitive analytical methods can be used for

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/H 2 O 2 1:1–5:1, solvent concentration (methanol) of 5–90 wt%, catalyst content of 0–5.0 wt%, reaction time of 5–300 min and the intensity of stirring 0–500 rpm. In order to calculate the mass balance for the syntheses performed, the post

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with a detection limit 1 × 10 −9 M min −1 for ONOO − fluxes by photon counting [ 2 ] and 1 × 10 −11 M for ONOO − concentration by applying a membrane sampler [ 3 ]. Luminol is endosomal membrane permeable [ 4 ] and its initial oxidation step

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mL gastight syringe and the solution was stirred at 1,200 rpm. The initial concentrations of NaBH 4 , HPO 4 2− or PAA and cobalt(II) chloride were 150, 4.2 and 1.4 mM, in order. A molar ratio of NaBH 4 to cobalt(II) greater than 100 was used to

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Baráth, Á., Halász, A. & Holzapfel, W. (1991): Concentration of biogenic amines of some foods. (Egyes élelmiszerek biogén amin koncentrációja.) Éclelm. Ipar , 45 , 286-299. Concentration of biogenic amines of some foods. (Egyes

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Reaction Kinetics, Mechanisms and Catalysis
Authors: Cristina Benincá, Patrício Peralta-Zamora, Ronaldo Cardoso Camargo, Célia Regina Granhen Tavares, Everton Fernando Zanoelo, and Luciana Igarashi-Mafra

experimentally the kinetics of a synthetic effluent by Fenton and photo-Fenton processes at optimal operating conditions in terms of H 2 O 2 and Fe 2+ concentration. A 2 2 factorial design of experiments was proposed to define the initial concentration of

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of initial mole ratios of alcohol to phthalic anhydride, b = c 0 ALC / c 0 PHT , equal to 3:1, 5:1, 10:1. The effect of temperature on the reaction rate was determined at b = 5:1, in the range of temperatures 413–453 K. The concentration of

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. & Kilburn, D. G. (1997): On-line monitoring and control of methanol concentration in shake-flask cultures of Pichia pastoris . Biotechnol. Bioengng. , 56 , 279-286. On-line monitoring and control of methanol concentration in

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. Besides, low concentrations and low rate waste streams can be easily processed in this process. Another advantage of this method is that ultraviolet (UV) light sources with low intensity (i.e. solar light) can be used for photocatalytic reactions. Moreover

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under the same conditions. Experiments were performed at two and four months of storage. Treatments were named by cultivar name abbreviation (RD or GD) succeeded by Ca(NO 3 ) 2 concentration (00, 05, or 10) and storage time (0, 2, or 4), respectively. 2

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