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Items for "Oxidation"

Effect of ozone on ruthenium species in alkaline medium – Part II: Oxidation of pentahydroxo nitrosyl ruthenate(II) ion RuNO(OH)52-

Oxidation of the nitrosyl ruthenium complex RuNO(OH)52- has been carried out in sodium hydroxide solutions in contact with a gas flow containing ozone...

Keywords: Ruthenium, Ozone, Nitrosyl Complex, Oxidation, Alkaline medium

01/2006 | Radiochimica Acta, Oldenbourg Wissenschaftsverlag
Early Stages of Protective Oxide Layer Growth on Binary Iron Aluminides

The aim of the present study was to investigate the early stages of protective oxide layer growth on Fe-15 at.%Al and Fe-40 at.%Al oxidized at 700 to 900 °C for 5 to 300 min in dry, synthetic air...

Keywords: Iron Aluminides, Oxidation, Characterization of Thin Layers

11/2005 | Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag
A simplified reaction model predicting the effect of some parameters on the degradation of phenol in the electron beam process

Electron beam irradiation is a known advanced oxidation process that is studied in the literature to examine the possibilities of pollutant removal from waters...

Keywords: Electron beam, Phenol, Hydroxyl radical, Model, Oxidation

08/2006 | Radiochimica Acta, Oldenbourg Wissenschaftsverlag
Mechanism of Oxidation of L-Proline by Aqueous Alkaline Diperiodatoargentate (III): Decarboxylation and Dehydration

The kinetics of oxidation L-proline by diperiodatoargentate (III) (DPA) in alkaline medium at a constant ionic strength of 0.50 mol dm−3 was studied spectrophotometrically...

Keywords: L-Proline, Diperiodatoargentate (III), Oxidation, Kinetics

05/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag
Preferential Solvation Effects on the Kinetics and Thermodynamics of Oxidation of Anilines by Chromium(VI)

The imidazolium fluorochromate (IFC) oxidation of fifteen meta - and para-substituted anilines, in varying mole fractions of benzene in 2-methylpropan-2-ol as mixtures, in the presence of p-toluenesulfonic acid (TsOH) is first order in IFC and TsOH and zero order in substrate...

Keywords: Anilines, Chromium(VI), Kinetics, Thermodynamics, Oxidation

06/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag
Application of oxidized multi-wall carbon nanotubes for Th(IV) adsorption

Th(IV) adsorption onto oxidized multi-wall carbon nanotubes (MWCNTs) was carried out at 293±2 K. The effects of MWCNT concentration, pH, and ionic strength were studied...

Keywords: Carbon nanotubes, Oxidation, Adsorption, Thorium(IV)

05/2007 | Radiochimica Acta, Oldenbourg Wissenschaftsverlag
Oxidation of N-(4-Hydroxyphenyl) Acetamide (Paracetamol) Drug by Diperiodatocuprate(III) in Aqueous Alkaline Medium by Stopped Flow Technique

The kinetics of oxidation of anti-pyretic drug, paracetamol (PAM) by diperiodatocuprate (III) (DPC) in alkaline medium at a constant ionic strength of 0.10 mol dm - 3 was studied spectrophotometrically...

Keywords: Kinetics, mechanism, paracetamol drug, Oxidation, Diperiodatocuprate (III)

04/2007 | Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag
L-Cysteine supplementation prevents exercise-induced alterations in human erythrocyte membrane acetylcholinesterase and Na+,K+-ATPase activities

Background: L-Cysteine (L-Cys) is implicated in the reduction of free radical production...

Keywords: acetylcholinesterase, cysteine, Exercise, Na+,K+-ATPase, Oxidation

01/2007 | Clinical Chemical Laboratory Medicine, Walter de Gruyter
Longitudinal changes in serum paraoxonase-1 activity throughout normal pregnancy

The aim of this study was to investigate the longitudinal changes in serum paraoxonase-1 (PON1) activity from preconception throughout normal pregnancy and their relationships with maternal dietary vitamin C and E intake...

Keywords: Oxidation, paraoxonase-1, pregnancy, vitamin C

07/2006 | Clinical Chemical Laboratory Medicine, Walter de Gruyter
In Situ Investigations on the Oxidation of Metals

High temperature oxidation processes of metals are important solid state reactions from a fundamental point of view and also concerning technical applications...

Keywords: Oxidation, In-Situ X-ray Absorption, In-Situ X-ray Diffraction, Parabolic Growth

11/2007 | Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag
The apolipoprotein A5 gene –1131T?C polymorphism affects vitamin E plasma concentrations in type 2 diabetic patients

Background: Variations of the apolipoprotein A5 (APOA5) gene are strongly associated with hypertriglyceridemia...

Keywords: APOA5, Oxidation, triglycerides, type 2 diabetes, vitamin E

04/2008 | Clinical Chemical Laboratory Medicine, Walter de Gruyter
Regulation of cathepsin K activity by hydrogen peroxide

Although cysteine cathepsins, including cathepsin K, are sensitive to oxidation, proteolytically active forms are found at inflammatory sites...

Keywords: cysteine cathepsin, inflammation, Oxidation, protease, proteolysis, sulfenic acid

08/2008 | Biological Chemistry, Walter de Gruyter
The effect of the mode of delivery on the maternal-neonatal carnitine blood levels and antioxidant status

Background: Carnitine blood levels are closely related to ?-oxidation and implicated with strenuous muscle contractions...

Keywords: carnitine, delivery, labor, Newborn, Oxidation

05/2008 | Clinical Chemical Laboratory Medicine, Walter de Gruyter
Polyoxometalate (POM) oxidation of lignin model compounds

Various lignin model compounds were oxidized with polyoxometalate (POM), K5[SiVW11O40]·12 H2O, in sodium acetate buffer (I=0.2 M, pH 5.0) and the reaction kinetics were investigated...

Keywords: Kinetics, lignin model compounds, Oxidation, polyoxometalate (POM)

01/2008 | Holzforschung, Walter de Gruyter
Studies on oxidative modifications of cellulose in the periodate system: Molecular weight distribution and carbonyl group profiles

The effects of periodate oxidation on cellulose were studied by means of gel permeation chromatography (GPC) using multiple detection and carbonyl-selective fluorescence labeling according to the CCOA methodology profiling of carbonyl groups...

Keywords: cellulose oxidation, CCOA, dialdehyde cellulose, DAC, molecular weight distribution, Oxidation, periodate

11/2007 | Holzforschung, Walter de Gruyter