Bibliografie tematiche / Oxidation

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Letteratura scientifica selezionata sul tema "Oxidation"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 5 ottobre 2024

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Articoli di riviste sul tema "Oxidation"

1

Griffith, William P., e Maria Suriaatmaja. "Studies on transition-metal nitrido and oxo complexes. Part 20. Oxoruthenates and oxo-osmates in oxidation catalysis; cis-[Os(OH)2O4]2- as a catalytic oxidant for primary amines and for alcohols". Canadian Journal of Chemistry 79, n. 5-6 (1 maggio 2001): 598–606. http://dx.doi.org/10.1139/v00-181.

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Abstract (sommario):
cis-[Os(OH)2O4]2– with [Fe(CN)6]3– and other co-oxidants has been studied as a catalytic reagent for the oxidative dehydrogenation of primary aromatic and aliphatic amines to nitriles, the oxidation of primary alcohols to carboxylic acids and of secondary alcohols to ketones. Electronic and Raman spectroscopy have been used to elucidate the nature of the oxoruthenates and oxo-osmates present in a number of reported organic oxidations catalyzed by ruthenium and osmium species.Key words: oxidation catalysis, ruthenium, osmium, amine dehydrogenation, alcohol oxidation.
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2

Francioso, Antonio, Alessia Baseggio Conrado, Carla Blarzino, Cesira Foppoli, Elita Montanari, Simone Dinarelli, Alessandra Giorgi, Luciana Mosca e Mario Fontana. "One- and Two-Electron Oxidations of β-Amyloid25-35 by Carbonate Radical Anion (CO3•−) and Peroxymonocarbonate (HCO4−): Role of Sulfur in Radical Reactions and Peptide Aggregation". Molecules 25, n. 4 (20 febbraio 2020): 961. http://dx.doi.org/10.3390/molecules25040961.

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Abstract (sommario):
The β-amyloid (Aβ) peptide plays a key role in the pathogenesis of Alzheimer’s disease. The methionine (Met) residue at position 35 in Aβ C-terminal domain is critical for neurotoxicity, aggregation, and free radical formation initiated by the peptide. The role of Met in modulating toxicological properties of Aβ most likely involves an oxidative event at the sulfur atom. We therefore investigated the one- or two-electron oxidation of the Met residue of Aβ25-35 fragment and the effect of such oxidation on the behavior of the peptide. Bicarbonate promotes two-electron oxidations mediated by hydrogen peroxide after generation of peroxymonocarbonate (HCO4−, PMC). The bicarbonate/carbon dioxide pair stimulates one-electron oxidations mediated by carbonate radical anion (CO3•−). PMC efficiently oxidizes thioether sulfur of the Met residue to sulfoxide. Interestingly, such oxidation hampers the tendency of Aβ to aggregate. Conversely, CO3•− causes the one-electron oxidation of methionine residue to sulfur radical cation (MetS•+). The formation of this transient reactive intermediate during Aβ oxidation may play an important role in the process underlying amyloid neurotoxicity and free radical generation.
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3

Zhao, Rong, Denghu Chang e Lei Shi. "Recent Advances in Cyclic Diacyl Peroxides: Reactivity and Selectivity Enhancement Brought by the Cyclic Structure". Synthesis 49, n. 15 (12 giugno 2017): 3357–65. http://dx.doi.org/10.1055/s-0036-1588458.

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Abstract (sommario):
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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4

Silva, D. M. de, e S. D. Aust. "Ferritin and ceruloplasmin in oxidative damage: review and recent findings". Canadian Journal of Physiology and Pharmacology 71, n. 9 (1 settembre 1993): 715–20. http://dx.doi.org/10.1139/y93-107.

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Abstract (sommario):
The oxidation of biomolecules such as lipid, protein, and DNA is associated with a variety of toxicities and pathologies. In an all-encompassing definition these oxidative processes have been referred to as "oxidative stress." Although the direct reaction between molecular oxygen and most biomolecules is spin forbidden, this reaction can be efficiently catalyzed by transition metals such as iron and copper. Iron especially has been demonstrated to be a potent catalyst of biological oxidations. This review focuses on the relationship between iron and copper with respect to the copper protein ceruloplasmin, which may play a role in iron homeostasis by catalyzing the oxidation of iron as it is placed in ferritin.Key words: iron, copper, ferritin, ceruloplasmin.
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5

Lathbury, David, e Andy Wells. "Oxidation and Oxidative Reactions". Organic Process Research & Development 19, n. 11 (20 novembre 2015): 1536. http://dx.doi.org/10.1021/acs.oprd.5b00341.

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6

Cryle, Max J., Jeanette E. Stok e James J. De Voss. "Reactions Catalyzed by Bacterial Cytochromes P450". Australian Journal of Chemistry 56, n. 8 (2003): 749. http://dx.doi.org/10.1071/ch03040.

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Abstract (sommario):
The cytochromes P450 are a large family of oxidative haemoproteins that are responsible for a wide variety of oxidative transformations in a variety of organisms. This review focuses upon the reactions catalyzed specifically by bacterial enzymes, which includes aliphatic hydroxylation, alkene epoxidation, aromatic hydroxylation, oxidative phenolic coupling, heteroatom oxidation and dealkylation, and multiple oxidations including C–C bond cleavage. The potential for the practical application of the oxidizing power of these enzymes is briefly discussed.
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7

Sardarly, А. М. "PHASE COMPOSITION AND OXIDATION DEGREE OF VANADIUM IN CATALYSTS FOR OXIDATIVE DEHYDROGENATION OF PROPANE". Chemical Problems 20, n. 4 (2022): 358–65. http://dx.doi.org/10.32737/2221-8688-2022-3-358-365.

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The phase composition of vanadium and vanadium-antimony-containing samples of γ-Al2O3 and the degree of oxidation of vanadium in them were examined by XRD and EPR methods, respectively. The data of XRD and EPR spectroscopy show the formation of highly dispersed vanadium-oxygen and vanadiumantimony-oxygen structures on the surface of the support. It is shown that the EPR spectra of the studied samples are due to "isolated" vanadium ions with an oxidation state of +4 in nonstoichiometric vanadium-oxygen and vanadium-antimony-oxygen formations with a square pyramid local environment structure with a characteristic V=O double bond. The EPR spectra of two types of paramagnetic centers of vanadium, which differ in the distortion of the square-pyramidal structure of the local environment of the vanadium ion, were identified. It was established that the number of ions with an oxidation state of +4 in V,Sb-containing samples depends on the V/Sb ratio in them.
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8

SIMANDAN, Tiberiu, Jing SUN e Thomas A. DIX. "Oxidation of DNA bases, deoxyribonucleosides and homopolymers by peroxyl radicals". Biochemical Journal 335, n. 2 (15 ottobre 1998): 233–40. http://dx.doi.org/10.1042/bj3350233.

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Abstract (sommario):
DNA base oxidation is considered to be a key event associated with disease initiation and progression in humans. Peroxyl radicals (ROO•) are important oxidants found in cells whose ability to react with the DNA bases has not been characterized extensively. In this paper, the products resulting from ROO• oxidation of the DNA bases are determined by gas chromatography/MS in comparison with authentic standards. ROO• radicals oxidize adenine and guanine to their 8-hydroxy derivatives, which are considered biomarkers of hydroxyl radical (HO•) oxidations in cells. ROO• radicals also oxidize adenine to its hydroxylamine, a previously unidentified product. ROO• radicals oxidize cytosine and thymine to the monohydroxy and dihydroxy derivatives that are formed by oxidative damage in cells. Identical ROO• oxidation profiles are observed for each base when exposed as deoxyribonucleosides, monohomopolymers and base-paired dihomopolymers. These results have significance for the development, utilization and interpretation of DNA base-derived biomarkers of oxidative damage associated with disease initiation and propagation, and support the idea that the mutagenic potential of N-oxidized bases, when generated in cellular DNA, will require careful evaluation. Adenine hydroxylamine is proposed as a specific molecular probe for the activity of ROO• in cellular systems.
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9

Wang, Xi, e Yingwei Li. "Nanoporous carbons derived from MOFs as metal-free catalysts for selective aerobic oxidations". Journal of Materials Chemistry A 4, n. 14 (2016): 5247–57. http://dx.doi.org/10.1039/c6ta00324a.

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Abstract (sommario):
A new kind of metal-free catalyst comprised of highly graphitized N-doped nanoporous carbons from direct carbonization of metal–organic frameworks (MOFs) turns out to be an excellent metal-free catalyst for a series of liquid-phase oxidation reactions including aerobic oxidations of cyclohexane and toluene as well as oxidative coupling of amines.
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10

Christoffers, Jens, e Mathias S. Wickleder. "Synthesis of Aromatic and Aliphatic Di-, Tri-, and Tetrasulfonic Acids". Synlett 31, n. 10 (17 marzo 2020): 945–52. http://dx.doi.org/10.1055/s-0039-1691745.

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Abstract (sommario):
Oligosulfonic acids are promising linker compounds for coordination polymers and metal-organic frameworks, however, compared to their carboxylic acid congeners, often not readily accessible by established synthetic routes. This Account highlights the synthesis of recently developed aromatic and aliphatic di-, tri- and tetrasulfonic acids. While multiple electrophilic sulfonations of aromatic substrates are rather limited, the nucleophilic aromatic substitution including an intramolecular variant, the Newman–Kwart rearrangement, allows the flexible introduction of up to four sulfur-containing moieties at an aromatic ring. Sulfonic acids are then accessed by oxidation of thiols, thioethers, or thioesters either directly with hydrogen peroxide or in two steps with chlorine (generated in situ from N-chlorosuccinimide/hydrochloric acid) to furnish sulfochlorides which are subsequently hydrolyzed. In the aliphatic series, secondary alcohols as starting materials are converted into thioethers, thioesters, or thiocarbonates by nucleophilic substitutions, which are also subsequently oxidized to furnish sulfonic acids.1 Introduction2 Electrophilic Aromatic Substitution3 Nucleophilic Aromatic Substitution3.1 Intermolecular SNAr3.2 Intermolecular with Subsequent Oxidation3.3 Intramolecular with Subsequent Oxidation4 Nucleophilic Aliphatic Substitution with Subsequent Oxidation5 Oxidation5.1 Oxidation of Thiocarbonates5.2 Oxidation of Thioethers5.3 Oxidation of Thioesters6 Thermolysis of Neopentylsulfonates7 Functionalization via Diazonium Ions8 Conclusion
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Tesi sul tema "Oxidation"

1

S, Suresh. "Studies On Oxidation Of Benzylidene Derivatives". Thesis, Indian Institute of Science, 1994. https://etd.iisc.ac.in/handle/2005/151.

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Abstract (sommario):
Perfumery compounds isoeugenol and isosafrole can be oxidized to their aldehydes, vanillin and heliotropin respectively. The aldehydes obtained are very useful and commercially valuable products. Apart from their importance as perfumery compounds, they form important intermediates in the Pharmaceuticals and pesticide industries. Liquid phase oxidation of isosafrole using different oxidizing agents were tried. Sodium dichromate as oxidizing agent in aqueous acetic acid was found to be most suitable because of its higher yields and mild reaction conditions. This reaction was taken up for detailed study. Since the kinetic study of dichromate oxidation in aqueous acetic acid medium of isosafrole has not been mentioned in the literature, various parameters like isosafrole, dichromate and acetic acid concentrations were studied. The experiments were conducted at different temperatures to estimate the activation energy of the reaction. The effect of added salts like manganese sulfate, manganese acetate and cobaltous acetate has also been studied. For all the experiments the change in isosafrole concentration was observed. The rate of reaction increases with increase in isosafrole concentration. The order of the reaction with respect to isosafrole concentration is found to be one. The rate of reaction increases with increase in initial sodium dichromate concentration. The reaction is found to be half order in dichromate ion concentration. The rate of reaction increases with increase in acetic acid concentration with an order two. The atmospheric oxygen does not affect the reaction rate suggests that the reaction may not be free radical reaction. The rate of reaction increases with increase in temperature. The activation energy was found to be equal to 14.59 kcal/mol.
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2

S, Suresh. "Studies On Oxidation Of Benzylidene Derivatives". Thesis, Indian Institute of Science, 1994. http://hdl.handle.net/2005/151.

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Abstract (sommario):
Perfumery compounds isoeugenol and isosafrole can be oxidized to their aldehydes, vanillin and heliotropin respectively. The aldehydes obtained are very useful and commercially valuable products. Apart from their importance as perfumery compounds, they form important intermediates in the Pharmaceuticals and pesticide industries. Liquid phase oxidation of isosafrole using different oxidizing agents were tried. Sodium dichromate as oxidizing agent in aqueous acetic acid was found to be most suitable because of its higher yields and mild reaction conditions. This reaction was taken up for detailed study. Since the kinetic study of dichromate oxidation in aqueous acetic acid medium of isosafrole has not been mentioned in the literature, various parameters like isosafrole, dichromate and acetic acid concentrations were studied. The experiments were conducted at different temperatures to estimate the activation energy of the reaction. The effect of added salts like manganese sulfate, manganese acetate and cobaltous acetate has also been studied. For all the experiments the change in isosafrole concentration was observed. The rate of reaction increases with increase in isosafrole concentration. The order of the reaction with respect to isosafrole concentration is found to be one. The rate of reaction increases with increase in initial sodium dichromate concentration. The reaction is found to be half order in dichromate ion concentration. The rate of reaction increases with increase in acetic acid concentration with an order two. The atmospheric oxygen does not affect the reaction rate suggests that the reaction may not be free radical reaction. The rate of reaction increases with increase in temperature. The activation energy was found to be equal to 14.59 kcal/mol.
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3

Tran, Lien-Hoa. "Biomimetic Reactions : Water Oxidation and Aerobic Oxidation". Doctoral thesis, Stockholm : Department of Organic Chemistry, Stockholm University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-26259.

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4

Brandt, Cirsten Maja. "Oxidation und epitaktische Oxidation von Nickel und Nickellegierungen". [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=966154002.

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5

Davies, Aled Mathew. "Selective oxidation and oxidative dehydrogenation reactions using niobium based catalysts". Thesis, Cardiff University, 2009. http://orca.cf.ac.uk/54882/.

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Abstract (sommario):
The selective oxidation of methanol to formaldehyde, the oxidative dehydrogenation of ethane and the oxidative dehydrogenation of propane have been investigated using niobium based catalysts. It has been shown that niobium oxides prepared by different methods show in general a low conversion of reactant in all probe reactions investigated. However, high selectivity to the desired products are maintained (i.e. formaldehyde, ethylene and propene) at elevated temperatures. The introduction of phosphorus into niobium based catalysts enhanced the catalytic performance of the catalyst The aim was to maintain a high selectivity of desirable products whilst increasing conversion. Two sets on niobium and phosphorus based catalysts were investigated. The first set of catalyst was niobium oxide phosphates, NbOPC>4, prepared from a method which was analogous to VPO work. Catalytic testing of the niobium oxide phosphates showed an increased conversion in both methanol oxidation and ethane oxidative dehydrogenation. However, there was little effect in using niobium oxide phosphates for the oxidative dehydrogenation of propane. Comparing niobium oxide phosphates to niobium oxides, the conversion doubled with respect to oxidative dehydrogenation of ethane and increased 18-fold with respect to methanol oxidation. The second set of niobium and phosphorus based catalysts were niobium phosphates, NbPOs. These were prepared from the reduction of niobium oxide phosphates. Catalytic testing showed an increased conversion in both methanol oxidation and ethane oxidative dehydrogenation. This is the first time that niobium phosphates and oxyphosphates have been investigated as catalysts and they demonstrate appreciable activity for a range of selective oxidation reactions.
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6

Cox, Simon Peter. "Iron oxidation and mineral oxidation by moderately thermophilic bacteria". Thesis, University of Warwick, 1992. http://wrap.warwick.ac.uk/109481/.

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Abstract (sommario):
The microbial oxidation of minerals is a commercially important process. Until comparatively recently only one organism capable of mineral oxidation has been extensively studied - Thiobacillus ferrooxidans. Several new, potentially commercially important isolates were studied in comparison with T.ferrooxidans. This was done with regard to their iron and sulphur oxidation systems, which are vital to the process of mineral solubilisation, and their ability to solubilise the minerals pyrite or chalcopyrite. The study of the latter was undertaken with particular reference to mixed culture leaching. The effect of growth substrate history on iron and sulphur oxidation varied between organisms. In particular, strain BC1 lost very little of its iron or sulphur oxidation capacity whether it was grown on either substrate. Conversely, the oxidation systems of T.ferrooxidans were directly influenced by growth substrate. SDS PAGE analysis and optical spectroscopy of T.ferrooxidans and strains BC1, LM2 and TH3 were used to investigate iron and sulphur oxidation systems and principally to indicate target components of these systems for further detailed study. Further study of the iron oxidation system in strain BC1 showed that there was only one major chromophore, a membrane bound cytochrome aa_. This had absorption peaks at 443 nm, 560 nm and 604.5 nm. Spectra run at 77°K indicated a shoulder on the Soret peak at approximately 450 nm. Extensive investigation into the effect on the cytochrome aa_ of various detergents culminated in the solubilisation from the membrane of the terminal oxidase in an intact form. This allowed the mid-point redox potential of this cytochrome to be determined as +524 mV. The mid-point redox potentials of T.ferrooxidans cytochrome £ and fi. were determined as +317 mV and +497 mV respectively. SDS PAGE analysis indicated two proteins that could be involved in growth on ferrous iron, at 27 kD and 31 kD. One or both of these proteins appeared to contain very high levels of iron. High levels of iron were also found in fractions from column chromatography which contained cytochrome aa_. Mineral oxidation studies showed that there was a slight increase in the rate of leaching of chalcopyrite in mixed cultures of strain BC1 and strain BC13 when compared to a pure culture of strain BC1, when the organisms where grown in shake flasks. In airlift reactor leaching of chalcopyrite the addition of strain BC13 to strain BC1 had several major effects. The pH in the mixed culture reactor was kept far more constant. Despite this, the leaching of copper from the mineral was not significantly altered in the mixed culture. However, a notable phenomenon in this mixed culture of strain BC1 and strain BC13 was the apparent reduction of the specific iron oxidation capacity of strain BC1 in comparison with its activity in pure culture.
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7

Dobson, P. "The electrophilic halogenation, prevost oxidation and peroxydisulphate oxidation of alkenes". Thesis, University of York, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377280.

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8

Kim, Jun Mo. "Exploring the chemistry of bilirubin oxidation end products". Thesis, Griffith University, 2021. http://hdl.handle.net/10072/404159.

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Abstract (sommario):
Bilirubin is an endogenous molecule that is formed from the degradation of haem when senescent red blood cells have been transported to the liver, kidneys and spleen. Since its discovery, it has been thought of as a waste product that required excretion upon degradation due to accumulation leading to detrimental health conditions such as neonatal hyperbilirubinaemia and kernicterus. As such, the primary research focus on bilirubin has been on developing treatment protocols for reducing elevated levels of bilirubin, as well as optimising and developing more sensitive, robust and streamlined methods of measuring serum and urine bilirubin levels. However, there has since been a change in focus whereby recent research has demonstrated the antioxidative activity of bilirubin and has led to the postulation that it also has a physiological role as a protective cellular antioxidant, producing bilirubin oxidation by-products as a result of scavenging reactive oxygen and nitrogen species. There is a need for identifying and clarifying this developing area of research that also suggests that bilirubin oxidation end products could be associated with a variety of health conditions. This study commenced with a scoping review to distinguish the different types of bilirubin oxidation end products in the literature, for the purpose of conducting further detailed literature reviews, identifying gaps and informing the direction of experimental work for the thesis. The scoping review identified two pyrrole-containing oxidative by-products of bilirubin as biotripyrrins, biopyrrins, or bilirubin oxidative metabolites (BOMs) and bilirubin oxidation products (BOXes). A third pyrrole-containing compound was identified that has been associated with mental illness and oxidative stress, with speculation on its origin. Due to the structural similarities shared with this compound and BOMs and BOXes, it was considered important for further literature review. Two broad themes emerged from the scoping review as a focus for the subsequent reviews on the three groups of pyrrole compounds: (i) elucidation, characterisation and chemical synthesis of bilirubin oxidation end products, (ii) and proposed clinical application or pathophysiology for the bilirubin oxidative end products, including both human and animal studies. It was found that BOMs were serendipitously discovered when researchers were developing an enzyme-linked immunosorbent assay (ELISA) to detect total and unconjugated bilirubin. This led to the characterisation of these bilirubin metabolites that were hypothesised to result from conditions of oxidative stress. A number of clinical studies reported elevated levels of these metabolites for a wide variety of unrelated health conditions, particularly for cardiovascular and mental health conditions. The findings from the literature review conducted on BOXes identified that these oxidised forms of bilirubin have been speculated as a causative agent of vasospasm in patients suffering from subarachnoid haemorrhage (SAH). There has been a focus on identifying the causes of vasospasm in patients with SAH due to the condition being described as clinically frustrating and challenging to manage. Initial reports on BOXes identified these compounds in the cerebral spinal fluid (CSF) of SAH patients and researchers were able to characterise compounds related to bilirubin albeit at poor yields. A few reports that have investigated these compounds in in vitro and in vivo models corroborated the earlier findings however the low yields acquired from initial methods of synthesis reflected the lack of reports on the mode of action of BOXes. Recent publications have provided insight into the syntheses of these compounds at relatively high yields. The final literature review was conducted on urine pyrroles that have been the subject of considerable controversy, primarily relating to their chemical structure, as well as their role in mental health, which is not recognised or accepted by mainstream medicine. Urine pyrroles were originally identified in the 1960’s in patients with schizophrenia due to the purple colour observed when their urine samples reacted positively to Ehrlich’s reagent hence the name ‘Mauve factor’. Considerable efforts in identifying the compounds through qualitative and semiquantitative methods showed that the compounds were highly unstable hindering the characterisation and methods of syntheses. Due to their unstable nature, misidentifications were frequently reported in the literature, and together with their undetermined pathophysiological origin, compounded the controversy. Despite the unclear nature of the exact biochemical mechanisms of urine pyrroles, contemporary treatment and diagnosis of ‘pyrrole disorder’ or ‘pyroluria’ is gaining popularity, highlighting the importance of identifying the exact chemical structures as well as investigating the pathophysiology behind this elusive condition. The literature reviews provided the impetus for the direction of the experimental work. A number of intermediate compounds were derived from a series of photooxidation reactions using 2,4-dimethyl-3-ethyl-pyrrole. This provided insight into the solvent conditions required for these intermediates to be isolated, with preliminary results showing close structural similarities to compounds shown in reports originally investigating urine pyrroles and more recently in the characterisation of BOXes. Further, two intermediate compounds that previously have not been reported in the literature were synthesised through the photooxidation reactions. Both compounds followed similar methods of preparation and subsequent work-up with the distinction being the time of irradiation under ultraviolet light when in the presence of hydrogen peroxide (H2O2). One compound was irradiated for a period of over 96 hours before undergoing organic solvent work-up after being quenched with sodium hydrogen (NaOH) whereas the other novel compound was irradiated for a period of 48-72 hours. It was found that differing times in irradiation could provide insight into the dynamic system of these sensitive photooxidation reactions. Despite rigorous efforts in work-up and purification, the exploratory experiments in this study have shown that the compounds will readily interconvert into different compounds. This in turn directed the proceeding review and experimental work investigating the reactivity of the chemical trap para-dimethylaminobenzaldehyde, colloquially known as Ehrlich’s reagent, since a suitable chemical trapping agent would likely be needed for these highly reactive compounds. The literature reviews revealed that specifically for BOM research, there were a lack of reports pertaining the baseline reference ranges when utilising the ELISA biopyrrin kits. Establishing reference ranges may allow for accurate comparisons with established clinical markers that could validate BOMs as a robust clinical tool. The findings from the literature review on BOXes literature review showed that a continuation of research to establish whether these compounds are the cause or result of vasospasm in patients with SAH could allow for future therapeutic development. The long history on urine pyrroles and its withstanding controversy shows a need for further research specifically determining whether zinc and vitamin B6 are able to form complexes with urines pyrroles. Finally, further experimental work will help clarify and understand the mechanisms relating to pyrrole-containing molecules for the investigation of other chemical trapping agents. Overall, this is the first study to identify and provide an in-depth review of bilirubin oxidation end products and their relationship to human health. The results collated from the scoping review, literature reviews and experimental work may provide a useful starting point to continue the early work on urine pyrroles from the 1970’s and support the developing research that is currently emerging for BOM and BOX compounds. Bilirubin oxidation end products may emerge as the missing link in the pathophysiology of a number of chronic health conditions.
Thesis (Masters)
Master of Medical Research (MMedRes)
School of Pharmacy and Pharmac
Griffith Health
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9

Boyle, Sarah Ann. "Oxidation of toluene". Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387977.

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Prouff, N. "Oxidation of metals". Thesis, University of Glasgow, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377188.

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Libri sul tema "Oxidation"

1

1948-, Vigo-Pelfrey Carmen, a cura di. Membrane lipid oxidation. Boca Raton, Fla: CRC Press, 1990.

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2

Bäckvall, Jan-Erling, a cura di. Modern Oxidation Methods. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527632039.

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3

Oyama, S. Ted, e Joe W. Hightower, a cura di. Catalytic Selective Oxidation. Washington, DC: American Chemical Society, 1993. http://dx.doi.org/10.1021/bk-1993-0523.

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4

Warren, Barbara K., e S. Ted Oyama, a cura di. Heterogeneous Hydrocarbon Oxidation. Washington, DC: American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0638.

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Bäckvall, Jan-Erling, a cura di. Modern Oxidation Methods. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2004. http://dx.doi.org/10.1002/3527603689.

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6

Hauffe, Karl. Oxidation of Metals. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4684-8920-0.

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Meyer, Franc, e Christian Limberg, a cura di. Organometallic Oxidation Catalysis. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/11603818.

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8

Griffith, William P. Ruthenium Oxidation Complexes. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-1-4020-9378-4.

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Groeber, Margaret M. Chemical oxidation treatment. Washington, DC: U.S. Environmental Protection Agency, Office of Emergency and Remedial Response, 1991.

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Miller, Ryszard. Waste gases oxidation. Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej, 2000.

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Capitoli di libri sul tema "Oxidation"

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Savage, G. "Oxidation and oxidation protection". In Carbon-Carbon Composites, 193–225. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1586-5_6.

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Gooch, Jan W. "Oxidation Number (Oxidation State)". In Encyclopedic Dictionary of Polymers, 510. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8311.

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Kamins, Ted. "Oxidation". In Polycrystalline Silicon for Integrated Circuits and Displays, 163–94. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5577-3_4.

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Alonso, Concepción. "Oxidation". In Encyclopedia of Astrobiology, 1194–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_1135.

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Norman, Richard, e James M. Coxon. "Oxidation". In Principles of Organic Synthesis, 587–628. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2166-8_19.

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Anner, George E. "Oxidation". In Planar Processing Primer, 145–95. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0441-5_5.

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Bährle-Rapp, Marina. "Oxidation". In Springer Lexikon Kosmetik und Körperpflege, 394. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_7300.

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Duplij, Steven, WŁadysŁaw Marcinek, Francesco Toppan, Vladimir Dobrev, Valentina Petkova, Omer Faruk Dayi, Evgeniy Ivanov et al. "Oxidation". In Concise Encyclopedia of Supersymmetry, 286. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/1-4020-4522-0_379.

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Alonso, Concepción. "Oxidation". In Encyclopedia of Astrobiology, 1808–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_1135.

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Gooch, Jan W. "Oxidation". In Encyclopedic Dictionary of Polymers, 510. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8309.

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Atti di convegni sul tema "Oxidation"

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MARIN, G. B. "HIGH TEMPERATURE OXIDATION PROCESSES: OXIDATIVE COUPLING OF METHANE". In Proceedings of the NIOK (Netherlands Institute for Catalysis Research) Course on Catalytic Oxidation. WORLD SCIENTIFIC, 1995. http://dx.doi.org/10.1142/9789814503884_0006.

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Raj, S. "Coal Oxidation". In ASME 1988 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1988. http://dx.doi.org/10.1115/88-gt-238.

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Abstract (sommario):
Coals contain considerable amounts of oxygen in their structures ranging from 30% in brown coal to about 1.5% in anthracites. The distribution of coal oxygen in various functionalities changes drastically with increasing rank. The hetero-atom functionalities in coal and coal products are of importance in the processing of coal. The process of coal conversion relevant to the steam and gas turbine applications are pyrolysis, oxidation and combustion processes. Initial stages of pyrolysis and oxidation (combustion) are the thermal decomposition of the solid coal matrix to free radicals. Oxygen, sulfur, nitrogen and mineral containing free radicals play an important role during combustion thermodynamically. The differences between the coal functionalities in the solid coal matrix contribute to oxidation reactions of first and second order. The first and second order reactions affect the corrosion and deposition rates of the machine components differently. In this paper functionality differences of various coals with respect to their oxidation characteristics will be discussed.
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Kumar, Arvind, Vishnuvarthan Muthusamy, Ajith Kallakkavumkal, Ritwik Raman, Kanishka Gaur, Bosco Rajan, Gordon Bartley e Alok Trigunayat. "Low Temperature Hydrocarbon Oxidation Diesel Oxidation Catalyst (DOC) with Improved Particulate Matter Oxidation Capability". In Symposium on International Automotive Technology. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2021. http://dx.doi.org/10.4271/2021-26-0201.

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Villeneuve, Pierre, Claire Bourlieu-Lacanal, David McClements, Eric Decker e Erwann Durand. "Lipid oxidation in emulsions and bulk oils: A review of the importance of micelles". In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/lzak8107.

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Abstract (sommario):
Lipid oxidation is a major cause of quality deterioration in food or cosmetic products. In these matrices, lipids are often present in a bulk or in emulsified forms. In both systems, the rate, extent and pathway of oxidation are highly dependent on the presence of colloidal structures and interfaces because these are the locations where oxidation normally occurs. In bulk oils, reverse micelles (association colloids) are present and are believed to play a crucial role on lipid oxidation. Conversely, in emulsions, surfactant micelles are present that also play a major role in lipid oxidation pathways. This review discusses the current understanding of the influence of micellar structures on lipid oxidation. In particular, is discussed the major impact of the presence of micelles in emulsions, or reverse micelles (association colloids) in bulk oil on the oxidative stability of both systems. Indeed, both micelles in emulsions and associate colloids in bulk oil are discussed as nanoscale structures that can serve as reservoirs of antioxidants and pro-oxidants and are involved in their transport within the concerned system. Their role as nanoreactors where lipid oxidation reactions occur is also commented. Significance of your research to the AOCS membership? The results underline the importance of a better understanding of the role of micelles in the control of lipid oxidation in food or cosmetic products.
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Zabarnick, Steven, e Shawn D. Whitacre. "Aspects of Jet Fuel Oxidation". In ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-gt-219.

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A quartz crystal microbalance (QCM)/Parr bomb system with a headspace oxygen sensor is used to measure oxidation and deposition during thermal oxidative stressing of jet fuel. The advantages of the oxygen sensor technique in monitoring fuel oxidation is demonstrated. Simultaneous measurement of deposition using the QCM shows a strong correlation between oxidation and deposition in jet fuels. Studies performed over the temperature range 140 to 180°C show that surface deposition peaks at an intermediate temperature, while bulk deposition increases with temperature, in studies of jet fuel antioxidants, we find that rapid increases in oxidation rate occur upon consumption of the antioxidant. The antioxidant appears to be consumed by reaction with alkylperoxy radicals. In studies of metal deactivator (MDA) additives, we find that MDA is consumed during thermal stressing, and this consumption results in large increases in the oxidation rate of metal containing fuels. Mechanisms of MDA consumption are hypothesized.
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Liland, K. B., M. H. Ese, L. Lundgaard e M. Kes. "Oxidation of Cellulose". In 2008 IEEE International Symposium on Electrical Insulation. IEEE, 2008. http://dx.doi.org/10.1109/elinsl.2008.4570334.

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Moeltner, Lukas. "OXIDATION REACTIONS OF BIODIESEL AND CHARACTERIZATION OF SECONDARY OXIDATION PRODUCTS". In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b41/s17.048.

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Guyon, Claire, Anne MEYNIER e Marie de LAMBALLERIE. "Lipid and Protein Oxidation Monitoring in Pressurized Meat: Oxidation Pathways". In Virtual 2021 AOCS Annual Meeting & Expo. American Oil Chemists’ Society (AOCS), 2021. http://dx.doi.org/10.21748/am21.341.

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Johnson, Jon E., e David B. Kittelson. "Physical Factors Affecting Hydrocarbon Oxidation in a Diesel Oxidation Catalyst". In International Off-Highway & Powerplant Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/941771.

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Haber, Jerzy. "MECHANISM OF HETEROGENEOUS CATALYTIC OXIDATION". In Proceedings of the NIOK (Netherlands Institute for Catalysis Research) Course on Catalytic Oxidation. WORLD SCIENTIFIC, 1995. http://dx.doi.org/10.1142/9789814503884_0002.

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Rapporti di organizzazioni sul tema "Oxidation"

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Windes, William, Rebecca Smith e Mark Carroll. Effects of Oxidation on Oxidation-Resistant Graphite. Office of Scientific and Technical Information (OSTI), maggio 2015. http://dx.doi.org/10.2172/1194021.

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Irene, Eugene A. Silicon Oxidation Studies on Thin Film Silicon Oxidation Formation. Fort Belvoir, VA: Defense Technical Information Center, marzo 1989. http://dx.doi.org/10.21236/ada206835.

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DeBurgomaster, Paul Christopher. Direct Metal Oxidation. Office of Scientific and Technical Information (OSTI), agosto 2017. http://dx.doi.org/10.2172/1374284.

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Timothy J. Donohue. Microbial Formaldehyde Oxidation. Office of Scientific and Technical Information (OSTI), dicembre 2004. http://dx.doi.org/10.2172/834972.

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Colin P. Horwitz e Terrence J. Collins. ADVANCED OXIDATION PROCESS. Office of Scientific and Technical Information (OSTI), ottobre 2003. http://dx.doi.org/10.2172/824769.

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Dr. Colin P. Horwitz e Dr. Terrence J. Collins. ADVANCED OXIDATION PROCESS. Office of Scientific and Technical Information (OSTI), novembre 2003. http://dx.doi.org/10.2172/821583.

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Tratnyek, Paul, Jamie Powell e Rachel Waldemer. Improved Understanding of In Situ Chemical Oxidation Contaminant Oxidation Kinetics. Fort Belvoir, VA: Defense Technical Information Center, dicembre 2007. http://dx.doi.org/10.21236/ada602239.

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Apostolov, Anton A. On the Oxidation Induction Time and Oxidation Induction Temperature for Characterization of the Oxidative Stability of Poly(ethylene-co-propylene) Pipes. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, gennaio 2018. http://dx.doi.org/10.7546/crabs.2018.01.05.

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Apostolov, Anton A. On the Oxidation Induction Time and Oxidation Induction Temperature for Characterization of the Oxidative Stability of Poly(ethylene-co-propylene) Pipes. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, gennaio 2018. http://dx.doi.org/10.7546/grabs2018.1.05.

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Windes, W., e R. Smith. Oxidation Resistant Graphite Studies. Office of Scientific and Technical Information (OSTI), luglio 2014. http://dx.doi.org/10.2172/1164863.

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