hydrogen peroxide
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Forward genetics by genome sequencing uncovers the central role of the aspergillus niger goxB locus in hydrogen peroxide induced glucose oxidase expression
... that hydrogen peroxide, a product of the first step of GOx mediated biotransformation of glucose to gluconic acid, acts as a possible signaling metabolite for GOx induction (Witteveen et ...
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5. TREATMENT OF CYANIDE SOLUTIONS AND PRECIPITATION OF CYANICIDE METALS BY REACTION WITH HYDROGEN PEROXIDE AND CAUSTIC SODA, THE PERSO METHOD; OBTAINING ECONOMICALLY USEFUL SLUDGE.
... The hexagonal experimental design was applied which involves a series of tests of different molar ratios of hydrogen peroxide and caustic soda, time (min) vs concentration of total cyanide, and ...
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Biosensor based on tio2-mwcnts for hydrogen peroxide detection
... The design and evaluation of a hydrogen peroxide biosensor based on carbon nanotubes modified with titanium dioxide nanostructures.. In the development of the peroxide biosensor, the spe[r] ...
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TítuloReaction mechanism of the enzymatic chlorination of amino compounds catalyzed by the myeloperoxidase hydrogen peroxide chloride ion system
... Experimental and computational research devoted to the determination of reaction mechanisms is an issue of major concern in chemistry.[1] Theoretical characterization of geometry and energy of stationary points on ...
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Hydrogen peroxide production and resistance to nonoxinol 9 in Lactobacillus spp isolated from the vagina of reproductive age women
... protection mechanism of lactobacilli against vaginal infections due to genital pathogens. However, some species of Lactobacillus are also hydrogen peroxide-producers. Women, who usually use intrauterine ...
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A green synthesis of isatoic anhydrides from isatins with urea hydrogen peroxide complex and ultrasound
... 30% molar excess of the urea–hydrogen peroxide complex were added. The reaction mixture was stirred at room tem- perature for the time described in Table 1. The resulting precipitate was filtered off, washed ...
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Fragmentation of the gastrodermis and detachment of zooxanthellae in symbiotic cnidarians: a role for hydrogen peroxide and Ca2+ in coral bleaching and algal density control
... produced hydrogen peroxide in the ...by hydrogen peroxide (H 2 O 2 ), of -SH groups on the cytoskeleton and its attachment to the plasma ...
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Mechanisms of hydrogen peroxide-induced vasoconstriction in the isolated perfused rat kidney.
... Increased production of free radicals is closely associated with an enhanced arteriolar tone (20, 21), which is in turn associated with an elevation in blood pressure. Thus, Swei et al. (20) reported a correlation ...
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Treatment of an agrochemical wastewater by integration of heterogeneous catalytic wet hydrogen peroxide oxidation and rotating biological contactors
... Other AOP that is often employed for the treatment of more concentrated effluents is Fenton technology [16]. The oxidation of different pesticides by means of Fenton-like reactions using ferrous salts and hydrogen ...
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Highly enantioselective epoxidation with hydrogen peroxide and biologically inspired iron and manganese catalysts
... This thesis has been devoted to the discovery of new catalytic systems capable to epoxidize wide range of olefins with high efficiencies and stereoselectivities in mild conditions. The source of inspiration for these ...
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A novel hydrogen peroxide sensor based on graphite electrode modified by multiwalled carbon nanotubes doped with hydroxyapatite nanoparticles
... of its surface by carbon nanomaterials allow improves its electrochemical behavior, in our case the HAp-MWCNTs improves the reversibility, increasing the electron transfer, due to the high area and adsorption capacity of ...
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A Single Blind Randomized Trial About the Effect of Hydrogen Peroxide Concentration on Light Activated Bleaching
... tooth discoloration. Consequently, many authors have focused their studies on determining the best clinical approach that produces the fewest side effects. 1,11,13,24,31,39,40 Although only a 10% carbam- ide ...
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Efectos In Vitro de Agentes de Blanqueamiento sobre la Línea Celular L929
... culture. Hydrogen peroxide concentration of ...6% hydrogen peroxide studied during the three experimen- tal periods, thus suggesting that the level of cytotoxicity is directly related to the ...
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Papel de las actividades superóxido dismutasa y catalasa en la virulencia de Photobacterium damselae subsp. piscicida. Estrategias para la estimulación del estallido respiratorio en fagocitos de lenguados cultivados
... from hydrogen peroxide and superoxide anions is of little biological importance unless a metal such as ferric iron is present (Haber–Weiss reaction) (Miller & Britigan ...and hydrogen ...
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Volumen 18, Número 3
... of hydrogen peroxide (6%) and catalyzed by LED blue (450 ± 10 nm) and laser infrared (808 ± 10 nm) light for in-office treatment: Randomized clinical trial 1-year ...
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Automatic flow analysis method to determine traces of Mn2+ in sea and drinking waters by a kinetic catalytic process using LWCC spectrophotometric detection
... following the trends of the screening assays. Thus, the critical values of bipiridyl, hydrogen peroxide and nitric acid concentrations were established. In this case, ANOVA table, including curvature, ...
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Abatement of 2,4-D by H2O2 solar photolysis and solar photo-Fentonlike process with minute Fe(III) concentrations
... A 500 mL of a 2,4-D solution (1 mg L 1 or 10 mg L 1 ) were treated by Hydrogen Peroxide Solar Photolysis (HPSP) and solar photo-Fenton-like (SPF-like) processes, at two pH conditions (3.6 and 7.0) for 6 h ...
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Tcnica modificada de blanqueamiento de dientes vitales empleando DMC perxido de hidrgeno al 35%
... of hydrogen peroxide (6%) and catalyzed by LED blue (450 ± 10 nm) and laser infrared (808 ± 10 nm) light for in-office treatment: Randomized clinical trial 1-year ...
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Enhanced excess sludge digestion using thermal and chemical petreatments
... It was studied the effect of the thermal pre-treatment at 80ºC for 1 h and also the effect of the chemical pre-treatment with hydrogen peroxide at a dose of 0.2 gH 2 O 2 /gCOD at 30ºC [r] ...
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Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor
... Fig. 1 depicts the experimental set-up used for the degradation of phenol aqueous solutions by means of Catalytic Wet Hydrogen Peroxide Oxidation (CWHPO). The tubular reactor was made of glass with inner ...
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