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Oxygen

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This book presents information about the high enzymatic reactivity of reactive oxygen species. Chapters in the book cover several aspects of the topic such as the sources, formation mechanisms, reaction centers, oxidation-reduction reactions, cellular respiration chemistry, enzymatic kinetics, mitochondrial and plastid electron transport chains, oxidation-reduction potential, reaction constants, reaction velocity and reaction mechanisms involved, cellular cytotoxicity, antioxidant defense mechanisms in plants and animals, response of plants to conditions of environmental stress, xenobiotics, and the thermodynamics inherent to oxygen metabolism. The book also features a chapter on flavonoids which highlights a paradoxical facet of the affinity of reactive oxygen species for enzymes. Flavonoids are mainly antioxidant molecules as they act as trappers of reactive oxygen species. The chapter informs readers about the metabolic pathways mediated by enzymes through wich flavonoids become promoters of these same reactive oxygen species. All chapters present the subject in a simple, analytical format, while highlighting the scientific evidence gathered by researchers so far. The volume is an interesting reference for scholars learning about the biochemistry and enzymology of oxygen and its free radical derivatives.

Oxygen.

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"Covers the ecotoxicology of environmental heavy metal ions and the interactions between specific heavy metals-induced cell responses and oxidative stress Provides a better understanding of the mechanism of nanomaterial-induced toxicity as a first defense for hazard prevention Covers recent advances in new nanomedication technologies for the effects of NPs on oxidative stress, ROS and ER stress Discusses the effects of interactions between antioxidant defense therapy, ROS and strategies for treatment"--

Active oxygen.

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This book describes and comments on the results of research devoted to the studies of phase assemblages in the CaO-SiO2-Al2O3-Fe oxides chemical system, their stability and their evolution in our environment (temperature, pressure). Its aim is to be a research support, not only for researchers and development engineers but also more generally for others interested in materials sciences. The book is divided in two parts; the first devoted to a description of ‘the system’ using phase diagrams. The second explores the properties and uses of some of the minerals that are in widespread industrial and commercial use. Much of the work presented in this book is fully original and corresponds to the research undertaken by François Sorrentino from his time at the chemistry department of the University of Aberdeen during the early 1970’s, to recent years when he has resumed his interest in mineral research, particularly related to the synthesis of calcium silicates and calcium aluminates, and their industrial manufacture.

Oxides. --- Chalcogenides --- Oxygen compounds

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This book, written by a group of specialists in the different areas involved, summarises what we understand of the production and distribution of oxygen, the most abundant metal in the Universe. After presenting the methods of oxygen abundance determination in various media, it traces a panorama of oxygen in the Universe, describes the mechanisms and sites of oxygen production and finally discusses the chemical evolution of oxygen in different galactic and extra galactic contexts. An appendix thoroughly discusses the oxygen atomic data.

oxygen distribution --- Universe