Results 261 to 270 of about 458,211 (297)
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Coulometric microdetermination of peroxides—II☆Organic peroxides
Talanta, 1973An iodometric method for the rapid microdetermination of organic peroxides, utilizing electrochemical reduction in the iodine-iodide system, has been developed. After complete reaction between peroxide and iodide in an acidic semi-aqueous medium the iodine produced is reduced at a rotating platinum electrode, at constant potential.
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Radiation Research Supplement, 1963
The role of peroxides, produced by radiation or oxidative processes in metabolism, in the production of mutations is reviewed. Results are reported from studies on living cells immersed in peroxides modified in various ways. Results are used to postulate the action of internally formed peroxides on the hereditary substance. It is concluded that it will
O, WYSS, C, WIESEN, G E, SCHAIBERGER
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The role of peroxides, produced by radiation or oxidative processes in metabolism, in the production of mutations is reviewed. Results are reported from studies on living cells immersed in peroxides modified in various ways. Results are used to postulate the action of internally formed peroxides on the hereditary substance. It is concluded that it will
O, WYSS, C, WIESEN, G E, SCHAIBERGER
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Coulometric microdetermination of peroxides—I. Hydrogen peroxide
Talanta, 1973An electroanalytical method, based on controlled-potential coulometry in the iodine-iodide system, has been developed for determination of small amounts of hydrogen peroxide. The sample is added to an electrolyte containing an acid solution of iodide and the iodine, which is produced rapidly, is reduced at a rotating platinum electrode.
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Current Opinion in Plant Biology, 2002
Recent biochemical and genetic studies confirm that hydrogen peroxide is a signalling molecule in plants that mediates responses to abiotic and biotic stresses. Signalling roles for hydrogen peroxide during abscisic-acid-mediated stomatal closure, auxin-regulated root gravitropism and tolerance of oxygen deprivation are now evident.
Steven, Neill +2 more
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Recent biochemical and genetic studies confirm that hydrogen peroxide is a signalling molecule in plants that mediates responses to abiotic and biotic stresses. Signalling roles for hydrogen peroxide during abscisic-acid-mediated stomatal closure, auxin-regulated root gravitropism and tolerance of oxygen deprivation are now evident.
Steven, Neill +2 more
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Toxicological Reviews, 2004
Hydrogen peroxide is an oxidising agent that is used in a number of household products, including general-purpose disinfectants, chlorine-free bleaches, fabric stain removers, contact lens disinfectants and hair dyes, and it is a component of some tooth whitening products.
Barbara E, Watt +2 more
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Hydrogen peroxide is an oxidising agent that is used in a number of household products, including general-purpose disinfectants, chlorine-free bleaches, fabric stain removers, contact lens disinfectants and hair dyes, and it is a component of some tooth whitening products.
Barbara E, Watt +2 more
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Angewandte Chemie, 2005
[*] Prof. P. C. Burns, K.-A. Kubatko, G. SigmonDepartment of Civil Engineering and Geological SciencesUniversity of Notre Dame156 Fitzpatrick Hall, Notre Dame, IN 46556 (USA)Fax: ( +1)574-631-9236E-mail: pburns@nd.eduProf.Dr. B. J. Fryer, J. E. GagnonGreat Lakes Institute for Environmental ResearchUniversity of WindsorWindsor, Ontario N9B 3P4 (Canada ...
Peter C, Burns +6 more
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[*] Prof. P. C. Burns, K.-A. Kubatko, G. SigmonDepartment of Civil Engineering and Geological SciencesUniversity of Notre Dame156 Fitzpatrick Hall, Notre Dame, IN 46556 (USA)Fax: ( +1)574-631-9236E-mail: pburns@nd.eduProf.Dr. B. J. Fryer, J. E. GagnonGreat Lakes Institute for Environmental ResearchUniversity of WindsorWindsor, Ontario N9B 3P4 (Canada ...
Peter C, Burns +6 more
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Lipid peroxidation and lipid peroxide detected by chemiluminescence
Free Radical Biology and Medicine, 1987This article emphasizes the advantages of using a luminescence spectrometer based on photon counting techniques for the detection of lipid peroxidation. An overview is presented of how chemiluminescence can be stimulated in the luminol-cytochrome c heme peptide system as an assay for lipid hydroperoxides.
T, Iwaoka, F, Tabata, T, Takahashi
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Peroxides and Peroxide-Degrading Enzymes in the Thyroid
Antioxidants & Redox Signaling, 2008Iodination of thyroglobulin is the key step of thyroid hormone biosynthesis. It is catalyzed by thyroid peroxidase and occurs within the follicular space at the apical plasma membrane. Hydrogen peroxide produced by thyrocytes as an oxidant for iodide may compromise cellular and genomic integrity of the surrounding cells, unless these are sufficiently ...
Ulrich, Schweizer +2 more
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Hydrogen peroxide and hematin in microsomal lipid peroxidation
Journal of Inorganic Biochemistry, 1981Lipids of rat liver microsomes underwent peroxidation with production of malondialdehyde in the presence of H2O2 and hematin. Rates of peroxidation of 27-33 nmol of MDA formed/mg of microsomal protein/30 min were measured with 5 mM H2O2 and 10 microM hematin at 22 degrees C. Histidine (0.01 M) caused a 55% inhibition.
URSINI, FULVIO +4 more
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The American Journal of Surgery, 1951
Abstract There is no doubt that enemas using hydrogen peroxide solutions are effective in relieving fecal impactions. It is apparent, however, that the strength of the solutions used must be closely supervised in order to avoid complications. In my experience no more than 30 cc. (1 ounce) or at most 60 cc. (2 ounces) of a U. S. P.
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Abstract There is no doubt that enemas using hydrogen peroxide solutions are effective in relieving fecal impactions. It is apparent, however, that the strength of the solutions used must be closely supervised in order to avoid complications. In my experience no more than 30 cc. (1 ounce) or at most 60 cc. (2 ounces) of a U. S. P.
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