Gotowe bibliografie tematyczne / Peroxides

Gotowa bibliografia na temat „Peroxides”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 2 marca 2023

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Artykuły w czasopismach na temat "Peroxides"

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Zhao, Rong, Denghu Chang i Lei Shi. "Recent Advances in Cyclic Diacyl Peroxides: Reactivity and Selectivity Enhancement Brought by the Cyclic Structure". Synthesis 49, nr 15 (12.06.2017): 3357–65. http://dx.doi.org/10.1055/s-0036-1588458.

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Preliminarily studies on cyclic diacyl peroxides have shown novel and superior reactivities compared with their acyclic diacyl peroxide counterparts in many reaction types. After summarizing the methods available for the preparation of cyclic diacyl peroxides and describing their structural features, this review brings together an overview of their reactivities with respect to oxidations and decarboxylations, and demonstrates the advantages of reactions with cyclic diacyl peroxides, which include metal-free, additive-free, milder conditions, higher yields and better selectivities.1 Introduction2 Methods of Preparation of Cyclic Diacyl Peroxides3 Structures and Stabilities of Cyclic Diacyl Peroxides4 Oxidation Reactions4.1 Oxidative Additions to Alkenes4.2 Oxidation Reactions of Heteroatoms4.3 Oxidation Reactions of 1,3-Dicarbonyl Compounds4.4 Hydroxylations of Arenes5 Decarboxylations6 Conclusion
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Lubeigt, X., F. Flies, M. J. Bourgeois, E. Montaudon i B. Maillard. "Déplacements homolytiques intramoléculaires. 19. Stéréochimie de la décomposition induite de peroxydes insaturés conduisant à la formation d'hétérocycles à trois et quatre chaînons". Canadian Journal of Chemistry 69, nr 8 (1.08.1991): 1320–25. http://dx.doi.org/10.1139/v91-196.

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Homolytic decomposition induced by addition of dichloromethyl radicals to β- and γ-unsaturated peroxides having a substituent on the chain linking the unsaturation and the peroxide function was studied. The stereochemistry of the heterocycles produced was determined by I3C NMR and the stereoselectivity of intramolecular homolytic substitution on the peroxidic bond discussed. Key words: unsaturated peroxides, homolytic intramolecular substitutions, radical additions, oxygenated heterocycles.
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Missall, Tricia A., Jocie F. Cherry-Harris i Jennifer K. Lodge. "Two glutathione peroxidases in the fungal pathogen Cryptococcus neoformans are expressed in the presence of specific substrates". Microbiology 151, nr 8 (1.08.2005): 2573–81. http://dx.doi.org/10.1099/mic.0.28132-0.

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Glutathione peroxidases catalyse the reduction of peroxides by reduced glutathione. To determine if these enzymes are important for resistance to oxidative stress and evasion of the innate immune system by the fungal pathogen Cryptococcus neoformans, two glutathione peroxidase homologues, which share 38 % identity, were identified and investigated. In this study, these peroxidases, Gpx1 and Gpx2, their localization, their contribution to total glutathione peroxidase activity, and their importance to the oxidative and nitrosative stress resistance of C. neoformans are described. It is shown that the two glutathione peroxidase genes are differentially expressed in response to stress. While both GPX1 and GPX2 are induced during t-butylhydroperoxide or cumene hydroperoxide stress and repressed during nitric oxide stress, only GPX2 is induced in response to hydrogen peroxide stress. Deletion mutants of each and both of the glutathione peroxidases were generated, and it was found that they are sensitive to various peroxide stresses while showing wild-type resistance to other oxidant stresses, such as superoxide and nitric oxide. While the glutathione peroxidase mutants are slightly sensitive to oxidant killing by macrophages, they exhibit wild-type virulence in a mouse model of cryptococcosis.
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Veal, Elizabeth A., Lewis E. Tomalin, Brian A. Morgan i Alison M. Day. "The fission yeast Schizosaccharomyces pombe as a model to understand how peroxiredoxins influence cell responses to hydrogen peroxide". Biochemical Society Transactions 42, nr 4 (1.08.2014): 909–16. http://dx.doi.org/10.1042/bst20140059.

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As a more selectively reactive oxygen species, H2O2 (hydrogen peroxide) has been co-opted as a signalling molecule, but high levels can still lead to lethal amounts of cell damage. 2-Cys Prxs (peroxiredoxins) are ubiquitous thioredoxin peroxidases which utilize reversibly oxidized catalytic cysteine residues to reduce peroxides. As such, Prxs potentially make an important contribution to the repertoire of cell defences against oxidative damage. Although the abundance of eukaryotic 2-Cys Prxs suggests an important role in maintaining cell redox, the surprising sensitivity of their thioredoxin peroxidase activity to inactivation by H2O2 has raised questions as to their role as an oxidative stress defence. Indeed, work in model yeast has led the way in revealing that Prxs do much more than simply remove peroxides and have even uncovered circumstances where their thioredoxin peroxidase activity is detrimental. In the present paper, we focus on what we have learned from studies in the fission yeast Schizosaccharomyces pombe about the different roles of 2-Cys Prxs in responses to H2O2 and discuss the general implications of these findings for other systems.
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Gutowicz, Marzena. "Antioxidant and detoxycative mechanisms in central nervous system". Postępy Higieny i Medycyny Doświadczalnej 74 (19.02.2020): 1–11. http://dx.doi.org/10.5604/01.3001.0013.8548.

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Since the brain contains a large amount of polyunsaturated fatty acids, consumes up to 20% of oxygen used by the whole body and exhibits low antioxidants activity, it seems to be especially vulnerable to oxidative stress. The most important antioxidant enzymes are superoxide dismutase (SOD), which catalyze the dismutation of superoxide anion to hydrogen peroxide, catalase (CAT), which converts toxic hydrogen peroxide to water and oxygen, and glutathione peroxidase (Se-GSHPx), which reduces hydrogen peroxide and organic peroxides with glutathione as the cofactor. Among other detoxifying enzymes, the most significant is glutathione transferase (GST), which shows detoksyvarious catalytic activities allowing for removal of xenobiotics, reducing organic peroxides and oxidized cell components. One of the most important brain nonenzymatic antioxidants is reduced glutathione (GSH), which (individually or in cooperation with peroxidases) participates in the reduction of free radicals, repair of oxidative damage and the regeneration of other antioxidants, such as ascorbate or tocopherol. Glutathione as a cosubstrate of glutathione transferase scavenges toxic electrophilic compounds. Although the etiology of the major neurodegenerative diseases are unknown, numerous data suggest that reactive oxygen species play an important role. Even a small change in the level of antioxidants can leads to the many disorders in the CNS.
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Iturbe-Ormaetxe, Iñaki, Manuel A. Matamoros, Maria C. Rubio, David A. Dalton i Manuel Becana. "The Antioxidants of Legume Nodule Mitochondria". Molecular Plant-Microbe Interactions® 14, nr 10 (październik 2001): 1189–96. http://dx.doi.org/10.1094/mpmi.2001.14.10.1189.

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The mitochondria of legume root nodules are critical to sustain the energy-intensive process of nitrogen fixation. They also generate reactive oxygen species at high rates and thus require the protection of antioxidant enzymes and metabolites. We show here that highly purified mitochondria from bean nodules (Phaseolus vulgaris L. cv. Contender × Rhizobium leguminosarum bv. phaseoli strain 3622) contain ascorbate peroxidase primarily in the inner membrane (with lesser amounts detected occasionally in the matrix), guaiacol peroxidases in the outer membrane and matrix, and manganese superoxide dismutase (MnSOD) and an ascorbate-regenerating system in the matrix. This regenerating system relies on homoglutathione (instead of glutathione) and pyridine nucleotides as electron donors and involves the enzymes monodehy-droascorbate reductase, dehydroascorbate reductase, and homoglutathione reductase. Homoglutathione is synthesized in the cytosol and taken up by the mitochondria and bacteroids. Although bacteroids synthesize glutathione, it is not exported to the plant in significant amounts. We propose a model for the detoxification of peroxides in nodule mitochondria in which membrane-bound ascorbate peroxidase scavenges the peroxide formed by the electron transport chain using ascorbate provided by L-galactono-1,4-lactone dehydrogenase in the inner membrane. The resulting monodehydroascorbate and dehydroascorbate can be recycled in the matrix or cytosol. In the matrix, the peroxides formed by oxidative reactions and by MnSOD may be scavenged by specific isozymes of guaiacol peroxidase, ascorbate peroxidase, and catalase.
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Naskar, Kinsuk, i Jacques W. M. Noordermeer. "Dynamically Vulcanized PP/EPDM Blends: Multifunctional Peroxides as Crosslinking Agents — Part I". Rubber Chemistry and Technology 77, nr 5 (1.11.2004): 955–71. http://dx.doi.org/10.5254/1.3547862.

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Abstract Thermoplastic vulcanizates (TPVs) or dynamic vulcanizates are a special class of thermoplastic elastomers, produced by mixing and crosslinking of a rubber and a thermoplastic polymer simultaneously. In a previous study, it was demonstrated that the use of dicumyl peroxide in combination with triallyl cyanurate as crosslinking agents provides a good overall balance of physical properties of PP/EPDM TPVs. Commonly used peroxides like dicumyl peroxide generally produce volatile decomposition products, which sometimes provide a typical smell or show a blooming effect. In this paper multifunctional peroxides are described, which reduce the above-mentioned problems. They consist of a peroxide and co-agent-functionality combined in a single molecule. The multifunctional peroxides provide properties of TPVs, which are comparable with commonly employed co-agent assisted peroxides. The solubility and kinetic aspects of the various peroxides are highlighted, as well as the decomposition products of the multifunctional peroxides with respect to the avoidance of smelly by-products. Particularly, 2,4-diallyoxy-6-tert-butylperoxy-1,3,5-triazine turns out to be a very good alternative to the dicumyl peroxide/triallyl cyanurate combination.
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Brenot, Audrey, Katherine Y. King, Blythe Janowiak, Owen Griffith i Michael G. Caparon. "Contribution of Glutathione Peroxidase to the Virulence of Streptococcus pyogenes". Infection and Immunity 72, nr 1 (styczeń 2004): 408–13. http://dx.doi.org/10.1128/iai.72.1.408-413.2004.

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ABSTRACT Glutathione peroxidases are widespread among eukaryotic organisms and function as a major defense against hydrogen peroxide and organic peroxides. However, glutathione peroxidases are not well studied among prokaryotic organisms and have not previously been shown to promote bacterial virulence. Recently, a gene with homology to glutathione peroxidase was shown to contribute to the antioxidant defenses of Streptococcus pyogenes (group A streptococcus). Since this bacterium causes numerous suppurative diseases that require it to thrive in highly inflamed tissue, it was of interest to determine if glutathione peroxidase is important for virulence. In this study, we report that GpoA glutathione peroxidase is the major glutathione peroxidase in S. pyogenes and is essential for S. pyogenes pathogenesis in several murine models that mimic different aspects of streptococcal suppurative disease. In contrast, glutathione peroxidase is not essential for virulence in a zebrafish model of streptococcal myositis, a disease characterized by the absence of an inflammatory cell infiltrate. Taken together, these data suggest that S. pyogenes requires glutathione peroxidase to adapt to oxidative stress that accompanies an inflammatory response, and the data provide the first demonstration of a role for glutathione peroxidase in bacterial virulence. The fact that genes encoding putative glutathione peroxidases are found in the genomes of many pathogenic bacterial species suggests that glutathione peroxidase may have a general role in bacterial pathogenesis.
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Fleychuk, Roman, Lidiya Vuytsyk, Ananiy Kohut i Orest Hevus. "Synthesis of Epoxyperoxides and Peroxide Derivatives of -D-Galactopyranose Based Thereon". Chemistry & Chemical Technology 14, nr 4 (15.12.2020): 439–47. http://dx.doi.org/10.23939/chcht14.04.439.

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New epoxide-containing peroxides have been synthesized via the interaction between epichlorohydrin and ditertiary -hydroxyalkyl peroxides. The effect of reaction conditions on both the yield and composition of the reaction products has been established. Through the reactions of either the synthesized epoxide-containing peroxides with 1,2;3,4-di-O-isopropylidene--D-galactopyranose or 6-O-glycidyl-1,2;3,4-di-O-isopropylidene--D-galactopyranose with the -hydroxyalkyl peroxides, new peroxide derivatives with ditertiary and primary-tertiary peroxide groups have been synthesized successfully. The decomposition of the developed substances has been studied by complex thermal analysis and the kinetic parameters of the thermolysis have been determined.
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Clark, Donald E. "Peroxides and peroxide-forming compounds". Chemical Health and Safety 8, nr 5 (wrzesień 2001): 12–22. http://dx.doi.org/10.1016/s1074-9098(01)00247-7.

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Rozprawy doktorskie na temat "Peroxides"

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McDonald, Iain M. "Bicyclic peroxides : synthesis, structure and reactions". Thesis, Heriot-Watt University, 1987. http://hdl.handle.net/10399/1047.

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Gray, Norman. "The oxidation of arenethiols by peroxides". Thesis, University of Aberdeen, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328218.

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The oxidation of 4-substituted-benzenethiolate ions by hydrogen peroxide or t-butyl hydroperoxide gave the corresponding disulphide, sulphinic acid and sulphonic acid. With hydrogen peroxide the oxidation was of the second-order with p = -0.71 and showed a small positive salt effect. Benzenethiolate ion gave a small increase in rate with increasing solvent polarity and in 50% v/v dioxan at 25.0°C had ΔHdag 54.7 kJ mol-1, ΔS^dag -52.2 J mol^-1K^-1 and ΔGdag 70.2 kJ mol-1. 2-Nitrobenzenethiolate similarlygave ΔH^dag 39.7 kJ mol^-1, ΔSdag-113.2 J mol-1K-1 and ΔG^dag 73.4 kJ mol^-1 and the rate was not affected by added radical traps. The oxidation of these arene-thiolate ions was entropy controlled above 255.4 K. These oxidations are proposed to be polar and to proceed initially by a nucleophilic attack of the thiolate ion on the peroxide producing a sulphenic acid intermediate. Disulphide and sulphinic acid are formed by further reaction of the sulphenic acid. Disulphides give the same products on oxidation but are not necessary intermediates. Undissociated 4-substituted-thiols give only the corresponding disulphides under these conditions. Oxidation of benzenethiolate ion with t-butyl hydroperoxide gave unusual rate curves, a negligible solvent effect and apparently a large positive ΔSdag value. The mechanism of this oxidation differs from that previously described. 2,4-Dinitrobenzenethiolate ion gave anomalous rates of oxidation. With hydrogen peroxide (2 equivalents) the main product was the sulphinic acid, a positive salt effect was observed and excess hydroxide ion further increased the rate. The reaction may involve general base catalysis and a similar mechanism to that previously given. With t-butyl hydroperoxide (2 equivalents), less sulphinic acid was obtained together with large yields of di-(2,4-dinitrophenyl) sulphide and 2,4-dinitrophenol, presumably formed from the sulphinic acid. Added hydroxide ion markedly decreased the rate but a negative salt effect was observed. A greater difference in the mechanism is apparent in this case. The initial rate of aerial oxidation of benzenethiolate ion is of the same order of magnitude as that attributed to the medium in the peroxide oxidations and may be a radical process.
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Dragan, Andrei. "Oxidations with endocyclic peroxides and their derivatives". Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27446.

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This thesis describes two novel transformations (a method to synthesize alkylidene phthalides and a different approach toward the Baeyer-Villiger oxidation) and the development and mechanistic study of a metal-free oxidation of arenes. Chapter 1 introduces the concept of alkene oxyamination. Synthesis of a series of hydroxylamine derivatives of endocyclic peroxides was undertaken, which were then reacted with nitrogen, sulfur and carbon nucleophiles. This led to the discovery of a new reaction that provides access to alkylidene phthalides, a class of compounds which exhibit interesting biological activity. Chapter 2 describes the development of an alternative approach to the Baeyer-Villiger oxidation, through the reaction of hydrogen peroxide and a nitrile in the presence of a base. Chapter 3 describes direct methods for the formation of new aromatic C–O bonds, followed by the presentation of an organic peroxide mediated approach. Herein, an examination of the mechanism of the reaction of a malonoyl peroxide with an arene is studied through Hammett analysis, isotope labeling experiments, EPR studies, DFT calculations and reactivity patterns. Chapters 4 and 5 present the experimental procedures and analytical data relevant to the three reactions developed. Chapter 6 contains a bibliography.
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Rawling, Michael J. "Metal-free syn-dihydroxylation of alkenes using malonoyl peroxides". Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25565.

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This thesis describes the successful application of cyclopropyl malonoyl peroxide II in the metal-free syn-dihydroxylation of alkenes I. Chapter 1 outlines the available metal-free methods for achieving syn-1,2- dioxygenation of alkenes. The use of hypervalent iodine, selenium, sulfur and peroxide reagents are discussed in terms of the advantages and limitations of each method. Chapter 2 details a mechanistic investigation into the dihydroxylation reaction using cyclopropyl malonoyl peroxide II. Through kinetic studies, Hammett analysis, multiple isotopic labelling experiments, NMR investigations and trapping experiments an ionic, stepwise mechanism has been proposed. Minor competing reaction pathways have also been identified in addition to an alternative reaction mechanism in the absence of water. Chapter 3 describes the current scope of the cyclopropyl malonoyl peroxide II mediated dihydroxylation reaction by alkene class. An application of the dihydroxylation protocol is presented in the stereoselective synthesis of a 5-deoxy-L-arabinose derivative. Interaction of cyclopropyl malonoyl peroxide II with non-alkene nucleophiles is also discussed, and a novel allylic oxidation protocol using peroxide II is introduced. Chapter 4 discusses catalysis of the dihydroxylation reaction. Alcoholic hydrogen-bond donors with a pKa of 5-8 were found to be the most effective catalysts, achieving up to 4-fold rate acceleration. Chiral hydrogen-bond catalysts are also investigated. Chapter 5 outlines the design, synthesis and reaction of chiral C2-symmetric malonoyl peroxides. The first enantioselective metal-free syn-dihydroxylation of alkenes using a peroxide reagent is reported. Chapter 6 presents preliminary investigations into a complementary antidihydroxylation protocol using cyclopropyl malonoyl peroxide II in anhydrous acetic acid.
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Smith, David P. "Characterisation of peracids". Thesis, University of Cambridge, 1996. https://www.repository.cam.ac.uk/handle/1810/272276.

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Haq, Ahsanul. "The preparation of macrocyclic compounds by thermolysis of cyclic peroxides". Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/1491.

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DiPasquale, Antonio Giovanni. "Peroxide complexes of non-redox active metal centers : models for alternative mechanisms in cytochrome P450 oxidations? /". Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/11603.

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R, Morris Vernon. "An investigation of transient atmospheric inorganic peroxides : a theoretical and experimental study". Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/25857.

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Tribelhorn, Michael John. "Reactions of iron- and zinc-fuelled pyrotechnic systems". Thesis, Rhodes University, 1995. http://hdl.handle.net/10962/d1005003.

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A major industrial use of pyrotechnic compositions is as delay fuses in electric detonators. Suitable delay times may be achieved through (i) choice of chemical components (ii) adjustment of composition of the system chosen and, finally, (iii) adjustment of the length of fuse used. This study forms part of a survey of binary fuel/oxidant combinations in an attempt to provide some fundamental information on the first step above: (i) choice of chemical components. The complete survey has included studies of a single fuel in combination with one of a variety of oxidants, and studies of the oxidation of one of several different fuels separately by barium peroxide and strontium peroxide. This study is part of this second approach and the fuels chosen were iron and zinc powders, mainly for chemical reasons (including the potential for use of thermomagnetometry on the iron systems), but also for possible environmental advantages. The mixed oxide products of pyrotechnic combustion could also have some scientific and/or commercial value. The techniques used included thermal analyses of mixtures and their individual components, and measurements of temperature-time profiles during combustion. Thermodynamic and kinetic information was obtained under a variety of conditions and scanning electron microscopy and X-ray diffraction and microprobe analyses provided additional information. Possible mechanisms of reactions are discussed in detail. The practical conclusions were that any potential use which the Fe/peroxide systems may have as delay compositions, with burning-rates of from 3-30 mm s⁻¹, is offset by the susceptibility of the oxidants to reaction with water and CO₂ in the atmosphere. The Zn/BaO₂ and Zn/SrO₂ systems did not burn under compaction, and combustion of uncompacted powders was erratic. Zinc liquid (and probably zinc vapour) take part in the reaction and the gaseous nature of the combustion makes zinc-fuelled pyrotechnic systems unsuitable for delay applications. All the techniques used showed the heterogeneity of the solid residues of combustion. If these residues were to be of any value, they would need further conventional treatment involving grinding of the residue, possible adjustment of compositions, and calcining to produce uniform materials.
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Leahy, Christopher David. "The oxidation by peroxides of cyanides, cyanide complexes and related species". Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46407.

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Książki na temat "Peroxides"

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1934-, Andō Wataru, red. Organic peroxides. Chichester: Wiley, 1992.

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Liebman, Joel F., i Alexander Greer. The chemistry of peroxides. Chichester, West Sussex: John Wiley & Sons Inc., 2014.

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Rappoport, Zvi, red. The Chemistry of Peroxides. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/0470862769.

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Zvi, Rappoport, red. The chemistry of peroxides. Chichester: John Wiley & Sons, 2006.

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V, Kazakov D., Bubnov I͡U︡ N i Institut organicheskoĭ khimii (Akademii͡a︡ nauk SSSR. Uralʹskiĭ nauchnyĭ t͡s︡entr), red. Khimii͡a︡ i khemili͡u︡minest͡s︡ent͡s︡ii͡a︡ dioksiranov. Moskva: "Nauka", 1999.

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Sharipov, G. L. Khimii͡a︡ i khemili͡u︡minest͡s︡ent͡s︡ii͡a︡ 1,2-dioksetanov. Moskva: "Nauka", 1990.

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Antonovskiĭ, V. L. Fizicheskai︠a︡ khimii︠a︡ organicheskikh peroksidov. Moskva: Akademkniga, 2003.

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Antonovskiĭ, V. L. Progress v khimii organicheskikh peroksidov: Obzornai͡a︡ informat͡s︡ii͡a︡. Moskva: T͡S︡NIITĖneftekhim, 1992.

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Kunio, Yagi, red. Active oxygens, lipid peroxides and antioxidants. Boca Raton: CRC Press, 1993.

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International Agency for Research on Cancer. i IARC Working Group on the Evaluation of the Carcinogenic Risk of Chemicals to Humans., red. Allyl compounds, aldehydes, epoxides, and peroxides. [Lyon]: World Health Organization, International Agency for Research on Cancer, 1985.

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Części książek na temat "Peroxides"

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Pope, M. T. "From Hydrogen Peroxide and Organic Peroxides". W Inorganic Reactions and Methods, 6–7. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145203.ch6.

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Matyáš, Robert, i Jiří Pachman. "Organic Peroxides". W Primary Explosives, 255–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28436-6_10.

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Böttcher, P. "Of Peroxides". W Inorganic Reactions and Methods, 333–35. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145197.ch249.

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Gooch, Jan W. "Organic Peroxides". W Encyclopedic Dictionary of Polymers, 505. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8239.

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Ingraham, Llyod L., i Damon L. Meyer. "Dialkyl Peroxides". W Biochemistry of Dioxygen, 75–89. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2475-1_5.

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Pope, M. T. "From Organic Peroxides". W Inorganic Reactions and Methods, 70. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145203.ch57.

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Bächmann, K., i J. Hauptmann. "Determination of Organic Peroxides". W Mechanisms and Effects of Pollutant-Transfer into Forests, 119–24. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1023-2_13.

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Bächmann, K., i J. Hauptmann. "Determination of Organic Peroxides". W Physico-Chemical Behaviour of Atmospheric Pollutants, 98–102. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0567-2_15.

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Böttcher, P. "Of Peroxides and Superoxides". W Inorganic Reactions and Methods, 325–26. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145197.ch241.

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Li, Yiming. "Overall Safety of Peroxides". W Tooth Whitening, 35–44. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-38849-6_3.

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Streszczenia konferencji na temat "Peroxides"

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Heikes, Brian G., William L. Miller i Meehye Lee. "Hydrogen peroxide and organic peroxides in the marine environment". W Optics, Electro-Optics, and Laser Applications in Science and Engineering, redaktor Harold I. Schiff. SPIE, 1991. http://dx.doi.org/10.1117/12.46169.

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Milata, Viktor, Daniel Végh, Ladislav Štibrányi i Jozefína Žúžiová. "Peroxides Like Home Made Explosives". W Annual International Conference on Forensic Sciences & Criminalistics Research. Global Science & Technology Forum (GSTF), 2014. http://dx.doi.org/10.5176/2382-5642_fscr14.14.

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Jian, Wang, Lu Yungcai, Zhen Erzhen, Guo Zhaozheng i Shi Fang. "EFFECT OF LIPID PEROXIDES ON PROSTACYCLIN AND THROMBOXANE GENERATION IN HYPERCHOLESTEROLEMIC RABBITS". W XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643375.

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Rabbits feeding on atherogenic diet for 60 days resulted in high level of plasma lipid peroxides as well as extreme hypercholesterolemia. Both of them kept at high level until 35 days after atherogenic diet stopped. At the same time, as compared with the control group, plasma PGI2 level was remarkably decreased while TXA2 and platelet aggregability were increased. Atherosclerotic vessel walls contain high levels of lipid peroxides associated with decreased PGI2 and increased TXA2 generation. Atherosclerotic plaques had the highest level of lipid peroxides and TXA2 while PGI production was the least, as compared with non-plaque tissue of the same artery and the normal arteries. The condition of normal arteries was just reverse. It was concluded that the concurrent presence of lipid peroxidation products may be seriously considered when evaluating the hyperlipidemia as a cause of atherosclerosis, and the elevation of TXA2 generation in arteries might be taken into consideration when evaluating an imbalance of PGI2/TXA2 in plasma.
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Osmont, Antoine, Marc Genetier i Gerard Baudin. "Ability of thermochemical calculation to treat organic peroxides". W SHOCK COMPRESSION OF CONDENSED MATTER - 2017: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. Author(s), 2018. http://dx.doi.org/10.1063/1.5044986.

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KIMURA, M., G. LU, H. IGA i H. NISHIKAWA. "LOPHINE PEROXIDES AS AN EFFICIENT ORGANIC SOURCE OF SINGLET OXYGEN". W Proceedings of the 13th International Symposium. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812702203_0071.

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Naegeli, David W. "The Role of Sulfur in the Thermal Stability of Jet Fuel". W ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-298.

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The autoxidation of Jet A, dodecane, and a dodecane-15%-cumene blend doped with sulfur compounds were studied at 433 K. Oxygen, hydro peroxide and soluble gum were monitored during the autoxidation. Dodecane, cumene, and the dodecane-15%-cumene blend autoxidized rapidly, while Jet A had an induction period followed by a relatively slow post autoxidation. The results suggest that an inhibitor formed early in the post autoxidation of Jet A. Gum formed in the autoxidation of Jet A, whereas none was detected in dodecane, cumene, or dodecane-15% cumene. However, gum was detected in dodecane and dodecane-15% cumene doped with thiols and disulfides. Alkyl thiols and disulfides reduced the rate of autoxidation of dodecane, and there was an induction period in the formation of gum. Traces of sulfur (≈4 ppm) inhibited the autoxidation of dodecane-15% cumene in a way that resembled the post autoxidation of Jet A. Adding an organic base increased the rate of post autoxidation in Jet A and prevented formation of the oxidation inhibitor. An inhibition mechanism is proposed in which phenois are formed via acid-catalyzed decomposition of benzylic hydro peroxides.
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Bordet, J. C., M. Guichardant i M. Lagarde. "PEROXIDE STIMULATION OF PGI3 AND DIHOMO-PGI2 IN ENDOTHELIUM". W XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643366.

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Human umbilical endothelial cell (EC) monolayers incubated with eicosapentaenoic acid (EPA) produce small amounts of prostaglandin E3 (PGI3). We have previously shown that this metabolite is markedly enhanced in EC supernatant by co-incubating EPA with arachidonic acid (AA) (BBRC 135, 403, 1986). Moreover we found that PGF3a and PGE3 were similarly enhanced, and we concluded that such a stimulation occured at the cyclooxygenase rather than at the prostacyclin synthase level. It is generally assumed that cyclooxygenase is a peroxide-dependent enzyme and the present study shows that the potentiating effect of AA on EPA cyclooxygenation may be due to its hydroperoxy derivative, 15-HPETE. This has been established by measuring prostanoids of the trienoic series from (14-C)EPA and by detection of their metoxy-pentafluorobenzyl-trimethyl silyl derivatives from unlabelled EPA by gas chromatography-mass spectrometry. The potentiating effect of n-6 hydroperoxy derivative of linoleic acid (13-HPODE) was even higher than that of 15-HPETE. In addition, the cyclooxygenation of docosatetraenoic acid (DTA) or adrenic acid, was found to be also potentiated by 15-HPETE and 13-HPODE, but higher concentrations were required for the efficient synthesis of dihomo-PGI2. Concentrations of peroxides required for such potentiations were however far lower (−2μM) than those inhibiting prostacyclin synthase (≥100μM under our conditions). EPA and DTA, as competitive inhibitors of AA cyclooxygenation, appeared to need a higher peroxide tone than AA for their own metabolism. The biological relevance of DTA is not proved at this day, and dihomo-PGI2 has been found less active than PGI2. In contrast, PGI3 has been assumed to exhibit similar antiaggregatory effect than PGI2. EPA may then beneficially enhance the prostacyclin potential of vascular endothelium especially in conditions where a high peroxide tone is suspected like ageing or diabetes
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Jonsson, Malin, Kajsa Larsson, Jesper Borggren, Marcus Aldén i Joakim Bood. "Investigation of ps-PFLIF for detection of hydrogen peroxides in laminar flames". W Laser Applications to Chemical, Security and Environmental Analysis. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/lacsea.2014.lm2d.3.

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Gebarski, Benjamin, i Udo Becker. "Quantum Mechanical Models to Electrochemistry: Understanding the Redox Properties of Uranyl Peroxides". W Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.811.

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ISOBE, H., S. YAMANAKA, M. OKUMURA i K. YAMAGUCHI. "THEORETICAL CONSIDERATIONS ON THE ROLES OF HYDROGEN BONDING IN THERMAL DECOMPOSITION OF PEROXIDES". W Proceedings of the 15th International Symposium. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812839589_0027.

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Raporty organizacyjne na temat "Peroxides"

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Weinstein-Lloyd, J. Atmospheric peroxides. Technical progress report. Office of Scientific and Technical Information (OSTI), sierpień 1994. http://dx.doi.org/10.2172/10106399.

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Weinstein-Lloyd, Judith. Atmospheric peroxy radicals and peroxides. Final report. Office of Scientific and Technical Information (OSTI), maj 1999. http://dx.doi.org/10.2172/761097.

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Conner, W. V. Hydrogen peroxide safety issues. Office of Scientific and Technical Information (OSTI), kwiecień 1993. http://dx.doi.org/10.2172/10158827.

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Sears, Jeremiah, Timothy Boyle i Christopher Dean. Safe handling of potential peroxide forming compounds and their corresponding peroxide yielded derivatives. Office of Scientific and Technical Information (OSTI), czerwiec 2013. http://dx.doi.org/10.2172/1089980.

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Handa, Avtar K., Yuval Eshdat, Avichai Perl, Bruce A. Watkins, Doron Holland i David Levy. Enhancing Quality Attributes of Potato and Tomato by Modifying and Controlling their Oxidative Stress Outcome. United States Department of Agriculture, maj 2004. http://dx.doi.org/10.32747/2004.7586532.bard.

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General The final goal and overall objective of the current research has been to modify lipid hydroperoxidation in order to create desirable phenotypes in two important crops, potato and tomato, which normally are exposed to abiotic stress associated with such oxidation. The specific original objectives were: (i) the roles of lipoxygenase (LOX) and phospholipids hydroperoxide glutathione peroxidase (PHGPx) in regulating endogenous levels of lipid peroxidation in plant tissues; (ii) the effect of modified lipid peroxidation on fruit ripening, tuber quality, crop productivity and abiotic stress tolerance; (iii) the effect of simultaneous reduction of LOX and increase of PHGPx activities on fruit ripening and tuber quality; and (iv) the role of lipid peroxidation on expression of specific genes. We proposed to accomplish the research goal by genetic engineering of the metabolic activities of LOX and PHGPx using regulatable and tissue specific promoters, and study of the relationships between these two consecutive enzymes in the metabolism and catabolism of phospholipids hydroperoxides. USA Significant progress was made in accomplishing all objectives of proposed research. Due to inability to regenerate tomato plants after transforming with 35S-PHGPx chimeric gene construct, the role of low catalase induced oxidative stress instead of PHGPx was evaluated on agronomical performance of tomato plant and fruit quality attributes. Effects of polyamine, that protects DNA from oxidative stress, were also evaluated. The transgenic plants under expressing lipoxygenase (LOX-sup) were crossed with catalase antisense (CAT-anti) plants or polyamine over producing plants (SAM-over) and the lines homozygous for the two transgenes were selected. Agronomical performance of these line showed that low catalase induced oxidative stress negatively affected growth and development of tomato plants and resulted in a massive change in fruit gene expression. These effects of low catalase activity induced oxidative stress, including the massive shift in gene expression, were greatly overcome by the low lipoxygenase activity. Collectively results show that oxidative stress plays significant role in plant growth including the fruit growth. These results also for the first time indicated that a crosstalk between oxidative stress and lipoxygenase regulated processes determine the outcome during plant growth and development. Israel Regarding PHGPx, most of the study has concentrated on the first and the last specific objectives, since it became evident that plant transformation with this gene is not obvious. Following inability to achieve efficient transformation of potato and tomato using a variety of promoters, model plant systems (tobacco and potato cell cultures, tobacco calli and plantlets, and Arabidopsis) were used to establish the factors and to study the obstacles which prohibited the regeneration of plants carrying the genetic machinery for overproduction of PHGPx. Our results clearly demonstrate that while genetic transformation and over-expression of PHGPx occurs in pre-developmental tissue stage (cell culture, calli clusters) or in completed plant (Arabidopsis), it is likely that over-expression of this enzyme before tissue differentiation is leading to a halt of the regeneration process. To support this assumption, experiments, in which genetic engineering of a point-mutated PHGPx gene enable transformation and over-expression in plants of PhSPY modified in its catalytic site and thus inactive enzymatically, were successfully carried out. These combined results strongly suggest, that if in fact, like in animals and as we established in vitro, the plant PHGPx exhibits PH peroxidase activity, these peroxides are vital for the organisms developmental process.
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Melof, Brian Matthew, David L. Keese, Brian V. Ingram, Mark Charles Grubelich, Judith Alison Ruffner i William Rusty Escapule. Hydrogen peroxide-based propulsion and power systems. Office of Scientific and Technical Information (OSTI), kwiecień 2004. http://dx.doi.org/10.2172/903157.

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Walsh, Raymond F., i Alan M. Sutton. Pressure Effects on Hydrogen Peroxide Decomposition Temperature. Fort Belvoir, VA: Defense Technical Information Center, sierpień 2002. http://dx.doi.org/10.21236/ada405753.

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HALGREN DL. EFFLUENT TREATMENT FACILITY PEROXIDE DESTRUCTION CATALYST TESTING. Office of Scientific and Technical Information (OSTI), lipiec 2008. http://dx.doi.org/10.2172/935398.

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Hurst, D. H., K. G. Robinson i R. L. Siegrist. Hydrogen peroxide treatment of TCE contaminated soil. Office of Scientific and Technical Information (OSTI), grudzień 1993. http://dx.doi.org/10.2172/10182572.

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Phillips, Jason. 80% Hydrogen Peroxide Mixtures with Various Fuels. Office of Scientific and Technical Information (OSTI), maj 2019. http://dx.doi.org/10.2172/1762362.

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