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  • 1
    Online Resource
    Online Resource
    La Vergne :Royal Society of Chemistry, The,
    Keywords: Electron paramagnetic resonance. ; Electronic books.
    Description / Table of Contents: Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications.
    Type of Medium: Online Resource
    Pages: 1 online resource (302 pages)
    Edition: 1st ed.
    ISBN: 9781847553539
    Series Statement: Issn Series
    DDC: 543.0877
    Language: English
    Note: ELECTRON PARAMAGNETIC RESONANCE -- Contents -- Chapter 1 Biological Free Radicals -- 1 Introduction and Scope of Review -- 2 Metal Ions -- 2.1 Iron -- 2.2 Copper -- 2.3 Chromium -- 2.4 Other Metal Ions -- 3 Hydroperoxides -- 3.1 Alkyl/Aryl Hydroperoxides -- 3.2 Amino Acid, Protein and Nucleic Acid Hydroperoxides -- 4 Protein-derived Radicals -- 5 Veratyl Alcohol -- 6 Beta-amyloid Protein -- 7 Ozone -- 8 Nitric Oxide -- 9 Peroxynitrite(ONOO‾) -- 10 Asbestos, Mineral Fibres and Diesel Particles -- 11 Cigarette Smoke -- 12 Paraquat -- 13 Halogenated Compounds -- 14 Ethanol -- 15 Retinoic Acid -- 16 Quinones -- 17 Phenols and Related Compounds -- 18 Thiols, Disulfides and Related Compounds -- 19 Ascorbate -- 19.1 Clinical Studies -- 19.2 Animal Studies -- 19.3 In Vitro Studies -- 20 Toxins -- 21 Hydroxylamines and Hydrazines -- 22 Diazonium and Tetrazolium Compounds -- 23 Nitro Compounds and Nitrogen Heterocycles -- 24 Photochemistry -- 24.1 UV-generated Radicals -- 24.2 Radical Generation from Exogenous Photosensitisers -- 24.3 Other Photochemical Studies -- 25 Ischemia-Reperfusion Injury -- 25.1 Heart and Vasculature -- 25.2 Brain -- 25.3 Liver, Kidney and Other Organs -- 26 Radiation Dosimetry -- 27 Spin Trap Artifacts and Misassignments -- References -- Chapter 2 Time-resolved Electron Paramagnetic Resonance Studies in Organic Photochemistry -- 1 Introduction -- 2 The Mechanisms of CIDEP -- 3 Theoretical Developments -- 4 TREPR Experiments -- 4.1 The TR (CW) EPR Experiment -- 4.2 TREPR at Multiple Microwave Frequencies -- 4.3 Optically Detected Magnetic Resonance (ODMR) -- 4.3.1 RYDMR -- 4.3.2 FDMR -- 4.3.3 ADMR -- 4.4 Quantum Beats -- 4.5 Fourier Transform EPR -- 5 Applications in Organic Photochemistry -- 5.1 Fullerenes -- 5.2 Photosynthetic Model Systems -- 5.3 Radical Pairs in Micelles -- References. , Chapter 3 Radiation Damage to DNA and Related Biomolecules -- 1 Introduction -- 1.1 Scope of this Report -- 1.2 Significance of the Field of Research -- 1.3 Symbols Used -- 2 DNA Constituents -- 2.1 Introduction -- 2.2 Pyrimidines -- 2.2.1 Single Crystal Studies -- 2.2.2 Frozen Aqueous Solutions and Glasses -- 2.3 Purines -- 2.3.1 Single Crystals -- 2.3.2 Glasses -- 2.4 Mixed Crystal Systems -- 2.5 Multi-base Investigations -- 2.5.1 Frozen Aqueous Solutions and Glasses -- 2.5.2 Peroxyl and Sulfoxyl Radicals -- 3 DNA, Polynucleotides and Oligonucleotides -- 3.1 Introduction -- 3.1.1 Symbols for DNA Radicals -- 3.1.2 The Direct, Quasi-direct and Indirect Effects -- 3.2 Radical Yields in DNA -- 3.2.1 Radical Distributions at Low Temperatures -- 3.2.2 Deconvolution of Complex Spectra: Important Confirmatory Results -- 3.2.3 Where are the Sugar Radicals in Irradiated DNA? -- 3.2.4 Evidence for Sugar Radicals in High LET Irradiated DNA -- 3.2.5 Recombination: An Important Fundamental Process in Radiation Damage to DNA -- 3.3 Radical Transfer in DNA -- 3.3.1 Electron Transfer Distances in DNA -- 3.3.2 Hole Transfer from the DNA Hydration Layer: Yields of Hydroxyl Radicals -- 3.4 DNA-Thiol Systems -- 3.5 Irreversible Protonation of Electron-gain Centers in DNA -- 3.6 Radiation Damage to DNA by Heavy-ion Beams -- 3.7 Spin Trapping of DNA Intermediates -- 3.8 New Techniques -- References -- Chapter 4 Spin-trapping: Recent Developments and Applications -- 1 Introduction -- 2 New Spin-traps -- 2.1 New Nitrones -- 2.2 New Isotopically-labelled Spin-traps -- 3 Applications in Organic Solvents -- 3.1 Spontaneous Formation of Spin Adducts -- 3.1.1 Inverted Spin-trapping -- 3.1.2 Other Mechanisms -- 3.2 Spin-trapping of Various Radicals -- 3.3 Miscellaneous -- 4 Applications in Aqueous Solutions -- 4.1 Superoxide -- 4.2 Hydroxyl Radical -- 5 Trapping of Nitric Oxide. , 6 Miscellaneous -- References -- Chapter 5 EPR and ENDOR Studies of Metalloproteins -- 1 Introduction -- 2 Copper -- 2.1 'Blue'Copper Sites -- 2.2 Type 2 Copper Sites -- 2.3 Binuclear Sites and Multi-centered Copper Proteins -- 3 Iron -- 3.1 Non-heme Iron Proteins -- 3.2 Heme-Iron Proteins -- 3.3 Iron-Sulfur Proteins -- 4 Nickel -- 5 Molybdenum and Tungsten -- 6 Vanadium -- 7 Manganese -- 8 Conclusions -- Acknowledgements -- References -- Chapter 6 Pulsed ESR of Microporous and Mesoporous Oxide Materials -- 1 Introduction -- 2 Organic Radicals -- 3 Transition Metal Ions -- 3.1 Cu(II) Systems -- 3.2 Ni(I) Systems -- 3.3 Pd(I) Systems -- 3.4 Fe(III) Systems -- 3.5 Mn(II) Systems -- 3.6 Ti(III) Systems -- 3.7 Cr(V), Mo(V) and V(IV) Systems -- 3.8 Paramagnetic Silver Clusters -- Acknowledgement -- References -- Chapter 7 Advanced EPR in Millimetre Bands and Very High Fields -- 1 Introduction -- 2 Techniques -- 3 Applications -- 3.1 Molecular Structure Studies -- 3.1.1 Single-electron Spin Systems -- 3.1.2 Multi-electron Spin Systems -- 3.2 Molecular Mobility Studies -- 4 High-field Low-temperature Effects -- 5 Conclusions -- Acknowledgments -- References -- Chapter 8 Electron Transfer Kinetics Studied by EPR/ESR and Related Methods -- 1 Introduction -- 2 Bibliography -- 3 Marcus Theory of Electron Transfer Reactions in Solution -- 4 Intermolecular Electron Transfer Rate Constants from EPR Measurements -- 4.1 Time-resolved EPR at Constant Magnetic Field -- 4.2 Dynamic ESR Line-broadening Measurements -- 4.2.1 Homogeneous Electron Self-exchange Reactions -- 4.2.2 Degenerate Intramolecular Electron Exchange Reactions -- 4.3 Electron Self-exchange Rates from Other Magnetic Resonance Methods -- 4.3.1 Fluorescence-detected Magnetic Resonance Measurements -- 4.3.2 Time-resolved CIDNP and CIDEP Measurements -- 4.3.3 FT-EPR Measurements. , 4.3.4 RYDMR and MARY Methods -- Acknowledgements -- References -- Author Index.
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  • 2
    Online Resource
    Online Resource
    La Vergne :Royal Society of Chemistry, The,
    Keywords: Electron paramagnetic resonance. ; Electronic books.
    Description / Table of Contents: Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications.
    Type of Medium: Online Resource
    Pages: 1 online resource (338 pages)
    Edition: 1st ed.
    ISBN: 9781847553515
    Series Statement: Issn Series
    DDC: 538.364
    Language: English
    Note: Electron Spin Resonance -- Contents -- Chapter 1 Organic Radical Ions -- 1 Introduction -- 2 Bibliography -- 3 Radical Cations -- 3.1 Experimental Methods -- 3.2 π-Systems -- 3.2.1 Hydrocarbons -- 3.2.2 Non-hydrocarbons -- 3.3 Alkanes -- 3.4 Heteronuclear Radical Cations -- 4 Radical Anions -- 4.1 Formation of Radical Anions -- 4.2 π-Systems -- 4.2.1 Predominantly C-Centred -- 4.2.2 Quinones -- 4.2.3 Heteronuclear Radical Anions -- 4.3 Ion Pairs and Solvent Effects -- 4.4 Reactions Involving Radical Anions -- References -- Chapter 2 Time Resolved ESR Studies of Free Radicals -- 1 Introduction -- 2 Experimental Methods -- 2.1 Continuous-wave Sampling Techniques -- 2.2 Pulse Techniques -- 2.3 Comparison of the Methods -- 2.4 Other Methods -- 3 Chemically Induced Dynamic Electron Polarization -- 3.1 Polarization in the Triplet State -- 3.2 The Triplet Mechanism -- 3.3 The ST0 Radical Pair Mechanism -- 3.4 ST-1 RPM Polarization -- 3.5 Polarization in the Spin-correlated Pair -- 3.6 Interpretation of Spectra Which Exhibit Both TM and RPM Polarization -- 3.7 The Radical-Triplet Pair Mechanism -- 3.8 Polarization by Cross-relaxation -- 4 Polarization in Secondary Radicals -- 4.1. Polarization in Nuclearly-correlated Secondary Radicals -- 4.1.1 Proton-transfer Reactions -- 4.2 Polarization in Nuclearly-uncorrelated Secondary Radicals -- Electron Transfer Reactions -- 5 Conclusions -- References -- Chapter 3 High-field ESR -- 1 Introduction -- 2 Techniques -- 2.1 Magnetic Field -- 2.2 Microwave Equipment and Probe Heads -- 2.3 Pulsed ESR Experiments -- 2.4 ENDOR Experiments -- 2.5 ESR Imaging -- 3 Applications: Molecular Structure -- 3.1 Free Radicals -- 3.2 Paramagnetic Ions, Triplets, and Solid State Defects -- 3.3 Delocalized Electron Centers, Organic Semiconductors, Metals, etc. -- 3.4 Spin Probes and Spin Labels -- 4 Applications: Dynamics Studies. , 4.1 Fast Motion Regime -- 4.2 Dynamics Studies in Slow Motion Regime -- 4.3 Chemical Reactivity vs Molecular Mobility -- 5 Thermal Spin Polarization Effects -- 5.1 VHF ESR of Triplet Radical Pairs -- 5.2 Signs of Spin-Spin Coupling -- 6 Conclusions -- References -- Chapter 4 Transition Metals in Inorganic Systems -- 1 Introduction -- 2 Books and Reviews -- 3 EPR Techniques and Their Applications -- 4 Spectrum Simulation Methods -- 5 The Calculation of Spin-Hamiltonian Parameters -- 6 Monomeric Compounds -- 6.1 Single Crystals -- 6.2 Powders and Frozen Solutions -- 6.3 Matrix Isolated Species -- 7 Discrete Polymeric Species -- 7.1 Dimers -- 7.2 Trimers -- 7.3 Higher Oligomers -- 8 Extended Lattices -- 9 Microporous Materials -- References -- Chapter 5 Radiation Damage in DNA -- 1 Introduction -- 1.1 Scope of This Report -- 1.2 The Primary Workers in the Field -- 1.3 Symbols Used -- 2 DNA Constituents -- 2.1 Pyrimidines -- 2.1.1 Aqueous Solution at Room Temperature -- 2.1.2 Single Crystal Studies -- 2.1.3 Frozen Aqueous Solutions and Glasses -- 2.2 Purines -- 2.2.1 Single Crystals -- 2.2.2 Glasses -- 2.3 Redirection of Anion Protonation by Small Cations -- 2.4 Summary -- 3 DNA -- 3.1 The Radicals Present in DNA -- 3.1.1 Identification of DNA Ion Radicals at Low Temperatures -- 3.1.2 Ion Radical Stabilization by Proton Transfer between Complementary Bases -- 3.1.3 Effects of Added Salts on Radical Yields -- 3.1.4 Questions about Deconvolution of Complex Spectra -- 3.1.5 Other Primary and Secondary Radicals Formed in DNA -- 3.1.6 The Fate of the Electron Adduct in DNA -- 3.2 Hydration and Absolute Yields of Radicals in DNA -- 3.2.1 Hydration and Yields of Total Primary Radicals -- 3.2.2 The Destruction Constant k and Models for DNA Damage -- 3.2.3 Volume of a Trapped Radical Ion Cluster. , 3.2.4 Yields of Individual Ion Radicals as a Function of Hydration -- 3.3 Radical Transfer in DNA and DNA Complexes -- 3.3.1 Electron Transfer Distances in DNA -- 3.3.2 Long Range Hole Transfer -- 3.3.3 Hole Transfer from Backbone to Base -- 3.3.4 Hole Transfer from Hydration Layer to DNA -- 3.3.5 Radical Transfer from Histones and Protein Complexes with DNA -- 3.4 Spin Trapping of DNA Radicals -- 3.5 ESR of High LET Irradiated DNA Components -- References -- Chapter 6 Spin Labelling in Biological Systems -- 1 Introduction -- 2 Progressive CW Saturation and Saturation Transfer Intensities -- 3 Saturation with Spin Exchange -- 4 Accessibility to Paramagnetic Relaxation Agents -- 5 Site-directed Spin Labelling -- 6 Dipolar Induced Paramagnetic Relaxation -- 7 Molecular Dynamics and Saturation -- 8 Conclusion -- References -- Bibliography -- Chapter 7 EPR Studies of Photosynthesis -- 1 Introduction -- 2 EPR on Photosynthetic Systems -- 2.1 Plant Photosynthesis -- 2.1.1 Primary Donor and Acceptors of PS I -- 2.1.2 Donor Side of PS II -- 2.1.3 Mn Water Splitting Complex of PS II and Mn Model Clusters -- 2.1.4 Acceptor Side of PS II -- 2.1.5 Cytochromes -- 2.2 Bacterial Photosynthesis -- 2.2.1 Primary Donor in Bacterial RC's -- 2.2.2 Quinone Acceptors in Bacterial RC's -- 2.2.3 Correlated Radical Pairs in Bacterial RC's -- 2.2.4 Cytochromes -- 2.3 Model Systems -- 2.3.1 Carotenoids -- 2.3.2 Chlorophylls, Porphyrins, and Novel Porphyrinoids -- 2.3.3 Quinones -- 2.3.4 Porphyrin-Quinone Donor-Acceptor Systems -- Acknowledgements -- References -- Chapter 8 Biological Spin Trapping -- 1 Introduction -- 2 Superoxide -- 3 Hydroxyl Radical -- 3.1 Iron -- 3.2 Copper -- 3.3 Vanadium -- 3.4 Chromium -- 3.5 Cobalt -- 3.6 Nickel -- 3.7 HOC1 -- 3.8 Peroxynitrite -- 3.9 Quinones -- 3.10 Hydroxyl Radical Scavengers -- 4 Hydroperoxides -- 4.1 Organic Hydroperoxides. , 4.2 Lipid Hydroperoxides -- 5 Thiyl Radicals -- 6 Hydrazines -- 7 Lignin Peroxidase -- 8 Alcohol -- 9 Sulfur Dioxide, Bisulfites, and Sulfites -- 10 Halocarbons -- 11 Smoke- and Ozone-mediated Free Radicals -- 12 Protein Radicals -- 12.1 Myoglobin -- 12.2 Hemoglobin -- 12.3 Other Proteins -- 13 Arene Diazonium Compounds -- 14 DNA, RNA, and Sugars -- 15 Reperfusion Injury -- 15.1 Heart -- 15.2 Brain -- 15.3 Kidney -- 15.4 Transplant -- 15.5 Models -- 16 Nitrones as Drugs -- 16.1 Radical Scavengers -- 16.2 Shock Effects -- 16.3 Heart Effects -- 16.4 Brain Effects -- 16.5 Miscellaneous Effects -- 17 Spin Trap Decomposition -- 18 New Instrumental Techniques -- 18.1 State of the Art Instrumentation -- 18.1.1 Mass Spectroscopy/EPR -- 18.1.2 Loop Gap Resonator EPR -- 18.2 Instrumental Conditions -- 18.3 Interpretation of Hyperfine Coupling Constants -- 18.4 Fluorescence Detection -- 18.5 Microdialysis -- 18.6 Microcarrier Beads -- 18.7 Low Frequency EPR -- 18.8 Designer Spin Traps -- 18.9 Ex Vivo Radical Adduct Formation -- 19 Radical Adduct Impostors, Misidentifications, and Artifacts -- 20 Reviews on Spin Trapping -- Acknowledgements -- References -- Author Index.
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  • 3
    Online Resource
    Online Resource
    La Vergne :Royal Society of Chemistry, The,
    Keywords: Electron paramagnetic resonance. ; Electronic books.
    Description / Table of Contents: Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications.
    Type of Medium: Online Resource
    Pages: 1 online resource (283 pages)
    Edition: 2nd ed.
    ISBN: 9781847557568
    Series Statement: Issn Series
    DDC: 538.36405
    Language: English
    Note: Electron Paramagnetic Resonance -- Contents -- ESR Imaging Beyond Phantoms: Application to Polymer Degradation -- 1 Introduction and Motivation -- 1.1 Polymer Degradation -- 1.2 Polymer Stabilization by Hindered Amines -- 1.3 Motivation for ESRI Studies of Polymer Degradation -- 2 ESR Imaging and Applications to Polymer Systems -- 2.1 ESR Spectra in the Presence of Magnetic Field Gradients -- 2.2 ESR Imaging of Polymeric Systems -- 2.3 ESR Imaging of Polymers Stabilized by Hindered Amines -- 3 Experimental Details -- 3.1 Hardware for ESRI -- 3.2 Intensity Profiling from 1D ESRI -- 3.3 Line-Shape Profiling from 2D Spectral-Spatial ESRI -- 3.4 The Polymers Studied -- 4 ESR Spectra of Nitroxides Derived From Hindered Amine Stabilizers in Heterophasic Polymers -- 5 1D and 2D Spectral-Spatial ESRI of Heterophasic Polymers Stabilized by Hindered Amines -- 5.1 Thermal Treatment -- 5.2 Photodegradation -- 5.3 Advantages of ESRI Compared to FTIR and to Destructive Methods of Study -- 6 Conclusions -- Acknowledgments -- References -- Advances in Spin Trapping -- 1 Introduction -- 2 Basic Principles -- 3 New Nitrones for Spin Trapping -- 4 Spin Trapping Studies of Superoxide Radicals -- 4.1 Use of Cyclodextrins -- 4.2 Formation of Diastereoisomer Spin Adducts -- 4.3 Kinetic Studies -- 4.4 Chemical Exchange in Alkylperoxyl and Superoxide Radical Adducts of β-Phosphorylated Nitrones -- 5 Theoretical Calculations -- 6 Immuno Spin Trapping of Proteins -- 7 Separation and Identification of Spin Adducts -- 8 Conclusion -- References -- Site-Directed Spin-Labelling (SDSL) Applications in Biological Systems -- 1 Introduction -- 2 Soluble Proteins -- 3 Integral Membrane Proteins -- 4 Membrane-Associated Proteins -- 5 Fibril-Forming Proteins -- 6 Nucleic Acids -- 7 Substrates -- 8 Distance Measurements -- 9 Conclusions -- Acknowledgements -- References. , Quantum Chemical Approaches to Spin-Hamiltonian Parameters -- 1 Introduction -- 2 Theoretical Aspects -- 2.1 General Theory -- 2.2 Spin-Free Approaches -- 2.3 Two-Component Approaches -- 2.4 The Spin-Orbit Coupling Operator -- 3 Application to EPR Spin-Hamiltonian Parameters -- 3.1 g-Tensor -- 3.2 Hyperfine Couplings -- 3.3 Zero-Field Splittings -- 3.4 Quadrupole Couplings -- 3.5 Functional and Basis Set Effects -- 3.6 Environment Effects -- 4 Application Studies -- 4.1 Small Molecules -- 4.2 Organic and Biological Radicals -- 4.3 Transition Metals -- 5 Concluding Remarks -- Acknowledgements -- References -- Getting an Inside View of Nanomaterials with Spin Labels and Spin Probes -- 1 Introduction -- 2 Self-Assembled Supramolecular Structures -- 3 Polymers -- 4 Mesoporous Materials -- 5 Adsorption in Mesopores -- 6 Adsorption on Surfaces -- 6.1 Planar Surfaces -- 6.2 Rough Surfaces -- 7 Au Nanoparticles -- 8 Dendrimers -- 9 Conclusions -- Acknowledgements -- References -- EPR, ENDOR and EPR Imaging of Defects in Diamond -- 1 Introduction -- 2 The Use of EPR and Related Techniques in the Study of Defects in Diamond -- 3 Intrinsic Defects in Diamond -- 4 Paramagnetic Nitrogen Defects in Diamond -- 5 Transition Metal Defects in Diamond -- 6 Paramagnetic Defects Incorporating Hydrogen in Diamond -- 7 EPR Imaging of Paramagnetic Defect Distributions in Diamond -- 8 Conclusions and Further Work -- References -- EPR of Exchange Coupled Oligomers -- 1 Introduction -- 2 p-Block -- 3 d-Block -- 4 Mixed p/d-Block Radicals -- 5 Mixed d/f-Block Radicals -- 6 Biological Systems -- 6.1 Methods -- 6.2 Nitrogenases -- 6.3 Copper -- 6.4 Manganese (Excluding Photosystems) -- 6.5 Diiron (Including 2Fe-2S) -- 6.6 Other Iron-Sulfur Centres -- 6.7 Photosystems -- 6.8 Nickel -- 6.9 Miscellaneous -- References. , Biological Free Radicals and Biomedical Applications of EPR Spectroscopy -- 1 Introduction -- 2 Reactive Oxygen Species -- 2.1 Superoxide Radicals -- 2.2 Hydroxyl Radicals -- 3 Reactive Nitrogen Species -- 3.1 Nitric Oxide -- 3.2 Principles of ∙NO Measurement by EPR -- 3.3 Metal Chelate Complexes -- 3.4 Haemoglobin -- 3.5 Nitroxides as Spin Traps for ∙NO -- 3.6 Simultaneous Measurement of ∙NO and O2 -- 3.7 Other Endogenous Paramagnetic Products of ∙NO -- 4 Enzyme-Mediated Free Radical Production -- 4.1 Cytochrome c -- 4.2 Cytochrome P450 -- 4.3 NADPH Oxidase -- 5 Antioxidant Defences -- 5.1 Superoxide Dismutase -- 5.2 Catalase -- 5.3 Glutathione Peroxidase -- 5.4 Ascorbate (Vitamin C) -- 5.5 Vitamin E -- 5.6 Phenolic Antioxidants -- 6 Consequences of Free Radical Reactions with Biomolecules -- 6.1 Damage to Lipids -- 6.2 Damage to DNA -- 6.3 Damage to Proteins -- 6.4 Damage to Carbohydrates -- 7 Free Radicals and Disease -- 7.1 Cancer -- 7.2 Diabetes -- 7.3 Sepsis -- 7.4 Cardiovascular Disease -- 7.5 Oxidative Stress in other Disease Settings -- 7.6 Exercise and High Altitude Stress -- 7.7 Brain Injury -- 7.8 Other Systems -- 8 Apoptosis -- 9 Free Radicals in Plants -- 9.1 Reactive Oxygen Species Production by Plants -- 9.2 The Measurement of ROS in Plants by EPR -- 9.3 The Production of Nitric Oxide by Plant Cells -- 9.4 The Measurement of ∙NO in Plants by EPR -- 9.5 Other Processes in Plants Studied by EPR -- 10 Selected Biomedical Techniques -- 10.1 In vivo EPR -- 10.2 EPR Oximetry -- 10.3 EPR Imaging -- References -- Progress in High-Field EPR of Inorganic Materials -- 1 Introduction -- 2 Materials Research -- 2.1 Fullerenes -- 2.2 Semiconductors -- 2.3 Catalysis -- 2.4 Ferroelectrics -- 2.5 Transition Metal and Rare Earth Ions -- 2.6 Molecular Magnetic Clusters -- 2.7 Low-Dimensional Solids -- References.
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  • 4
    Online Resource
    Online Resource
    La Vergne :Royal Society of Chemistry, The,
    Keywords: Electron paramagnetic resonance. ; Electronic books.
    Description / Table of Contents: Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications.
    Type of Medium: Online Resource
    Pages: 1 online resource (413 pages)
    Edition: 1st ed.
    ISBN: 9781847553560
    Series Statement: Issn Series
    DDC: 538.36405
    Language: English
    Note: Electron Paramagnetic Resonance -- Contents -- Chapter 1 ESR Dating, Dosimetry and Microscopy for Terrestrial and Planetary Materials -- 1 Introduction -- 2 Principle and General Scope of ESR Dating and Dosimetry -- 2.1 Principle and Procedures of ESR Dating: Natural Radiation Effect -- 2.2 Scopes and Materials of ESR Dosimetry and Dating -- 3 Recent Development of ESR Dating in Terrestrial Materials -- 3.1 Calcium Carbonate (CaCO3): Speleothem, Shell and Coral -- 3.2 Sulfate (Anhydrite and Gypsum): Evaporite on Mars and Sulfate on Europa -- 3.3 SiO2 Igneous Rocks, Fault Gauge, Impact Craters and Sediment -- 3.4 Bones and Teeth: Hydroxyapatite -- 4 ESR Radiation Dosimetry -- 4.1 Accident Dosimetry Using Tooth Enamel -- 4.2 Development of Dosimeter Materials -- 5 Future ESR Dating and Assessment of Environment Using Ices -- 5.1 Solid H2O, CO2, SO2 for Space and Environmental Sciences -- 5.2 Radicals in Solid H2O -- 5.3 Solid CO2 and SO2 -- 5.4 Solid CH4 on Triton and Terrestrial Methane Hydrate -- 6 Environmental Studies -- 7 ESR Imaging and Microscopes -- 7.1 Apparatus -- 7.2 Materials Imaged by Scanning Microwave ESR -- 7.3 Other ESR Apparatus -- Summary -- Acknowledgements -- Appendix: Symposia and Proceedings from 1981 to Early 2000s -- References -- Chapter 2 Biomedical Aspects of Free Radicals:Recent Developments Through The Application of EPR -- 1 Introduction -- 2 Metal Ions -- 2.1 Iron -- 2.2 Copper -- 2.3 Other Metals -- 3 Peroxidases and Pseudo-peroxidases -- 3.1 Myeloperoxidase -- 3.2 Myoglobin -- 3.3 Cytochrome c and Cytochrome c Oxidase -- 4 Nitric Oxide Synthase -- 4.1 Nitric Oxide -- 4.2 Peroxynitrite -- 4.3 Carbonate Anion Radical -- 5 NADPH Oxidase -- 6 Semiquinones -- 6.1 Quinones -- 6.2 Quinone Imines -- 6.3 Hydroquinones -- 7 Nitroaromatics -- 8 Aromatic N-Oxides -- 9 Organic Hydroperoxides -- 10 Hydrazines. , 11 Heterocyclic Aromatic Amines -- 12 N-Hydroxyguanidines -- 13 Particulate Matter -- 14 Photosensitizers -- 14.1 Endogenous Sensitizers -- 14.2 Simple Quinones -- 14.3 Anthraquinones -- 14.4 Hypocrellin Derivatives -- 14.5 Helianthrone Derivatives -- 14.6 Ketones -- 14.7 Other Agents -- 15 Miscellaneous Xenobiotics -- 15.1 Ethanol -- 15.2 Paraquat -- 15.3 Anatoxin B1 -- 15.4 Hydroxyurea -- 15.5 Phenylbutazone -- 15.6 Ethyl Carbamate -- 15.7 Acrylonitrile -- 15.8 Clozapine -- 16 Radical Damage to Biomolecules -- 16.1 Proteins -- 16.2 Nucleic Acids -- 16.3 Lipids -- 16.4 Carbohydrates -- 17 Antioxidants -- 17.1 Thiols -- 17.2 Ascorbate -- 17.3 Vitamin E -- 17.4 Polyphenolic Compounds -- 18 Radicals in Selected Clinical Settings -- 18.1 Cardiovascular System -- 18.2 Endotoxaemia -- 18.3 Nervous System -- 18.4 Lung Injury -- 18.5 Kidney Disease -- 18.6 Diabetes Mellitus -- 18.7 Muscle Injury -- 18.8 Liver and Gastrointestinal Tract -- 19 Developments in Methodology -- Acknowledgements -- Abbreviations -- References -- Chapter 3 Organic Radical Ions -- 1 Introduction -- 2 Radical Cations -- 2.1 Matrices -- 2.2 Short-lived Species in Fluid Solution -- 2.3 Aqueous Solution -- 2.4 Radical cations with Delocalised π Systems -- 2.5 Reactions -- 2.6 Unusual Bonding -- 2.7 Materials -- 2.8 Radical Cations with Biological Relevance -- 3 Radical Anions -- 3.1 Structures -- 3.2 Reactivity of Radical Anions -- 3.3 High-Spin States and Materials -- 3.4 Radical Anions of Quinones and of Molecules with Biological Relevance -- 4 Brief Notes on Techniques and Methods -- 4.1 Electrodes -- Acknowledgements -- References -- Chapter 4 EPR and ENDOR of Metalloproteins:Copper and Iron -- 1 Introduction -- 2 Copper -- 2.1 'Blue' Copper Sites -- 2.2 Type 2 Copper Sites -- 2.3 Binuclear Sites and Multi-Centred Copper Proteins -- 3 Iron. , 3.1 Non-Heme Iron Proteins: Nitrogen and/or Oxygen Coordination -- 3.2 Iron-Sulfur Proteins -- 3.3 Heme-Iron Proteins -- 4 Conclusions -- References -- Chapter 5 EPR in Photosynthesis -- 1 Introduction -- 2 Bacterial Reaction Centres and Antenna Systems -- 2.1 The Primary Donor -- 2.2 The Intermediate Acceptor -- 2.3 The Quinone Acceptor -- 2.4 Radical Pair States -- 2.5 Metal Ions in Bacterial Reaction Centres -- 2.6 Light Harvesting Systems in Bacterial Photosysnthesis -- 2.7 Miscellaneous bRC -- 3 Oxygenic Photosynthesis: Photosystem I -- 3.1 The Primary Donor -- 3.2 The Intermediate Acceptor A-0 -- 3.3 The Quinone Acceptor A-1 -- 3.4 Radical Pairs in PSI -- 3.5 The Iron-Sulfur Clusters -- 4 Oxygenic Photosynthesis : Photosystem II -- 4.1 The Primary Donor -- 4.2 The Intermediate Acceptor -- 4.3 The Quinone Acceptors -- 4.4 Other Paramagnetic Species in PS II -- 4.5 Radical Pairs in PS II -- 4.6 The Tyrosine Radicals -- 4.7 The Oxygen Evolving Complex (OEC) -- 4.8 Miscellaneous Applications of EPR to PS II -- 5 Summary -- Acknowledgements -- References -- Chapter 6 ESR Studies of Radiation Damage to DNA and Related Biomolecules -- 1 Introduction -- 1.1 Scope of This Report -- 1.2 Trends in DNA Radiation Chemistry -- 1.3 Symbols Used -- 2 DNA Constituents -- 2.1 Single Crystal Studies -- 2.2 Pyrimidines -- 2.3 Purines -- 2.4 Summary -- 2.5 Base Radicals in d(CGCG)2 -- 2.6 Mixed Crystal Systems -- 2.7 FT EPR ofShort-Lived Radicals in Aqueous Solution -- 2.8 High LET Effects -- 3 DNA -- 3.1 Overview -- 3.2 Identity and Yields of DNA Radicals at Low Temperatures -- 3.3 Sugar Radicals in DNA -- 3.4 Ion Beam Irradiation Studies of DNA and Sugar Radicals -- 3.5 Electron and Hole Transfer from the Hydration layer to DNA -- 3.6 DNA - a Molecular Wire or an Insulator?. , 3.7 Electron and Hole Transfer from Trapped Ion Radical Species of DNA to Intercalators or Modified Bases -- 3.8 Spin Transfer From Histones to DNA -- 3.9 The Effect of Temperature -- 3.10 Electron and Hole Transfer to Oxidized Guanine Sites -- 3.11 Electron Transfer in DNA: Summary -- Acknowledgements -- References -- Chapter 7 EPR of Paramagnetic Centres on Solid Surfaces -- 1 Introduction -- 2 S Block Metal Oxides -- 2.1 Group 2 Metal Oxides -- 3 Transition Metal Oxides -- 3.1 TiO2 -- 3.2 ZrO2 -- 3.3 CeO2 -- 3.4 V2O5 Oxides -- 3.5 Chromium Oxides -- 3.6 MoOx -- 3.7 Iron Oxides -- 3.8 Copper Oxides -- 3.9 ZnO -- 3.10 Supported Nano-particles -- 4 p-Block Metal Oxides -- 4.1 A2O3 -- 4.2 SiO2 -- 4.3 SnO2 -- References -- Chapter 8 Measurements of Interspin Distances by EPR -- 1 Introduction -- 2 Distance Between Two Slowly Relaxing Centres -- 2.1 Method Development -- 2.2 Applications to Small Molecules -- 2.3 Applications to Biological Samples -- 2.4 Applications to Polymers -- 3 Measurements Based on Relaxation Times -- 3.1 Biological Samples -- Acknowledgements -- References -- Chapter 9 Progress in High Field EPR:Inorganic Materials -- 1 Introduction -- 2 Materials Research -- 2.1 Carbon, Silicon and Boron Materials -- 2.2 Oxygen -- 2.3 Catalysis -- 2.4 Radiation Dosimetry -- 2.5 Transition-Metal Ions -- 2.6 Rare Earth Ions -- 2.7 Polymers -- 2.8 Theory of HFEPR Relaxation -- 2.9 Molecular Magnetic Clusters -- 2.10 Low-dimensional Solids -- 2.11 Magnetically Ordered Materials -- 3 Techniques -- 3.1 Sources -- 3.2 Magnet Systems -- 3.3 Detection Schemes -- 3.4 Resonator Systems -- 3.5 High Power Pulse Systems -- 4 Conclusions -- References -- Chapter 10 EPR of Exchange-coupled Oligomers -- 1 Introduction -- 2 p-Block -- 3 d-Block -- 4 Mixed d/p-Block -- 5 Biological Systems -- 5.1 Methods -- 5.2 Nitrogenase -- 5.3 Copper. , 5.4 Manganese (Excluding Photosystems) -- 5.5 Diiron Including Fe2S2 -- 5.6 Other Iron-sulfur Centres -- 5.7 Photosystems -- 5.8 Miscellaneous -- References.
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  • 5
    Description / Table of Contents: Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications, Specialist Periodical Reports provide systematic and critical review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject, the series creates a unique service for the active research chemist with regular critical in-depth accounts of progress in particular areas of chemistry. Subject coverage of all volumes is very similar and publication is on an annual or biennial basis. As EPR continues to find new applications in virtually all areas of modern science, including physics, chemistry, biology and materials science, this series caters not only for experts in the field, but also those wishing to gain a general overview of EPR applications in a given area
    Type of Medium: Online Resource
    Pages: Online-Ressource (284 p.)
    Edition: 2nd rev. ed
    Series Statement: Specialist periodical reports v. 20
    DDC: 543.67
    Language: English
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  • 6
    Online Resource
    Online Resource
    [Potsdam] : Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum GFZ
    Keywords: Forschungsbericht ; Erdfall ; Subrosion ; Frühwarnsystem ; Reflexionsseismik
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (128 Seiten, 15,37 MB) , Illustrationen, Diagramme
    Language: German
    Note: Förderkennzeichen BMBF 03G0843A-J. - Verbund-Nummer 01153976 , Autoren und abweichende Titel dem Berichtsblatt entnommen , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 7
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (21 Seiten, 1,96 MB) , Illustrationen, Diagramme
    Language: German
    Note: Förderkennzeichen BMBF 16ES0154K. - Verbund-Nummer 01158602 , Autoren dem Berichtsblatt entnommen , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Sprache der Zusammenfassung: Deutsch, Englisch
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  • 8
    Keywords: Forschungsbericht ; Werkzeugbau ; Oberflächenbehandlung
    Type of Medium: Online Resource
    Pages: Online-Ressource (114 S., 11,7 MB) , Ill., graph. Darst.
    Language: German
    Note: Förderkennzeichen BMBF 16IN0587-88. - Verbund-Nr. 01059193. - Auch als gedr. Ausg. vorhanden. - Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Systemvoraussetzungen: Acrobat reader.
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  • 9
    Publication Date: 2024-04-03
    Description: The main sources of the ambient seismic wavefield in the microseismic frequency band (peaking in the ∼0.04–0.5 Hz range) are earth's oceans, namely the wind‐driven surface gravity waves (SGW) that couple oscillations into the seafloor and the upper crust underneath. Cyclones (e.g., hurricanes, typhoons) and other atmospheric storms are efficient generators of high ocean waves that in turn generate distinct microseismic signatures. In this study, we perform a polarization (i.e., three‐component) beamforming analysis of microseismic (0.05–0.16 Hz) retrograde Rayleigh and Love waves during major Atlantic hurricanes using a virtual array of seismometers in Eastern Canada. Oceanic hindcasts and meteorological data are used for comparison. No continuous generation of microseism along the hurricane track is observed but rather an intermittent signal generation. Both seismic surface wave types show clear cyclone‐related microseismic signatures that are consistent with a colocated generation at near‐coastal or shallow regions, however the Love wavefield is comparatively less coherent. We identify two different kinds of intermittent signals: (a) azimuthally progressive signals that originate with a nearly constant spatial lag pointing toward the trail of the hurricanes and (b) azimuthally steady signals remaining nearly constant in direction of arrival even days after the hurricane significantly changed its azimuth. This high complexity highlights the need for further studies to unravel the interplay between site‐dependent geophysical parameters, SGW forcing at depth and microseismic wavefield radiation and propagation, as well as the potential use of cyclone microseisms as passive natural sources.
    Description: Plain Language Summary: Ocean waves are responsible for the generation of microseisms, faint ground vibrations with complex characteristics and which comprise a major portion of the background seismic noise of the earth. In this study, we implement an onshore seismic detection method to study microseisms generated by cyclones in the North Atlantic ocean (hurricanes), as these are known to be major generators of large ocean waves. We observed that cyclones only seem to generate detectable microseisms as they move over certain regions in the ocean, namely near coastal or shallow water regions. The direction of arrival of these microseisms is sometimes constant, at other times it shifts azimuth along with the hurricanes. Understanding the relationship between ocean waves and cyclone‐related microseisms is an important step for the potential use of these vibrations to study the earth, ocean and atmosphere.
    Description: Key Points: Primary and secondary microseismic Love and Rayleigh waves excited by Atlantic cyclones were detected via onshore polarization beamforming. We observed microseisms related to cyclones as they pass over the northwestern Atlantic margin off Newfoundland. Some microseisms have constant direction of arrival, others are azimuthally progressive and reflect the advance of the cyclone.
    Description: German Research Foundation
    Description: https://doi.org/10.7289/V5NK3BZP
    Description: https://www.fdsn.org/networks/detail/CN/
    Description: http://ds.iris.edu/wilber3/
    Description: ftp://ftp.ifremer.fr/ifremer/ww3/HINDCAST
    Keywords: ddc:551.22 ; ambient seismic noise ; ocean microseisms ; hurricanes ; ocean gravity waves ; array seismology ; marine geophysics
    Language: English
    Type: doc-type:article
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  • 10
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 42-48 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have recently built a spectrometer that efficiently collects the energy spectrum of charged particles that emerge from targets bombarded by low-flux (10−15 A) incident beams. The spectrometer is used to detect positron-induced secondary electrons and low-energy positron-stimulated Auger electron emission. Slow positrons and positron-induced secondary electrons are generated from a cold neon positron moderator deposited onto an encapsulated 22Na source. The moderated beam is magnetically transported to the target with two sets of E×B plates. The particles emerging from the target are energy dispersed by a third set of plates and are detected with a one-dimensional position-sensitive detector. The data-collection rate for the energy-distribution spectrum is ∼10–100 times faster for this experiment relative to the more common method of sweeping grids or the plates.
    Type of Medium: Electronic Resource
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