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  • 1
    Online-Ressource
    Online-Ressource
    San Diego :Elsevier Science & Technology,
    Schlagwort(e): Physiology. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (1382 pages)
    Ausgabe: 5th ed.
    ISBN: 9780323913393
    DDC: 615.328
    Sprache: Englisch
    Anmerkung: Front Cover -- FELDMAN AND PIKE'S VITAMIN D -- FELDMAN AND PIKE'S VITAMIN D: Volume Two: Health, Disease and Therapeutics -- Copyright -- Contents -- List of contributors -- In memoriam -- Preface to the fifth edition -- List of abbreviations -- Relevant lab values in adults and children -- 51 - Defining thresholds for vitamin D I: scientific rationale for serum 25-hydroxyvitamin D cutoffs of 25 and 50nmol/L -- 1. Introduction -- 2. Justification for serum 25(OH)D concentration 25nmol/L -- 2.1 The UK scientific advisory committee on nutrition -- 3. Justification for serum 25(OH)D concentration 50nmol/L -- 3.1 The US/Canada Institute of Medicine -- 3.2 European food safety agency and nordic guidelines -- 4. Issues with reaching 25(OH)D thresholds for specific groups -- 5. Other issues surrounding definition of thresholds for vitamin D -- 6. Conclusion -- 7. Summary points -- References -- 52 - Defining thresholds for vitamin D II -- 1. Introduction -- 2. Human biology -- 3. Nutrition clinical trials cannot match the quality of evidence achieved with drugs -- 4. Cancer -- 5. Mortality -- 6. Cardiovascular -- 7. Toxicity -- 8. Multiple sclerosis -- 9. COVID-19 -- 10. Conclusion -- 11. Summary points -- References -- 53 - Methods of evaluating population studies of vitamin D: strengths and weaknesses -- 1. Introduction -- 2. Methods of assessing vitamin D status -- 2.1 Conceptual framework of assessing long-term vitamin D status -- 2.2 Measures of circulating 25(OH)D -- 2.3 Measures of vitamin D intake -- 2.4 Measures of sun exposure as a surrogate of vitamin D status -- 2.5 Measures of predicted 25(OH)D levels -- 2.6 Measure of genetic variation of circulating 25(OH)D -- 3. Main challenges in the epidemiologic study of vitamin D and disease. , 3.1 The time period for the assessment of vitamin D status covered should be based on the pathogenesis of the disease end point ... -- 3.2 Studies ideally should assess the dose-response relationship -- 3.3 Biases should be reduced or eliminated to the extent possible -- 3.4 Confounding should be limited to the extent possible -- 4. Summary of study designs of vitamin D -- 4.1 Ecologic studies -- 4.2 Cohort studies -- 4.3 Case-control studies -- 4.4 Interventional studies (randomized controlled trials) -- 4.5 Mendelian randomization studies -- 5. Conclusions -- 6. Summary points -- References -- Further reading -- 54 - Worldwide vitamin D status -- 1. Introduction -- 2. Assessment of vitamin D status -- 3. Study selection -- 3.1 Vitamin D status in North America (including Canada and Mexico) -- 3.2 Vitamin D status in South America -- 3.3 Vitamin D status in Europe -- 3.4 Vitamin D status in Middle East -- 3.5 Vitamin D status in Asia -- 3.6 Vitamin D status in Africa -- 3.7 Vitamin D status in Oceania -- 4. Multicenter and global studies using a central laboratory facility -- 5. Ethnicity/migration -- 6. Nutrition -- 7. Risk groups -- 8. Trends in vitamin D status -- 9. Implications -- 10. Conclusions -- 11. Summary points -- References -- 55 - Vitamin D in food-Compounds, stability, sources -- 1. Introduction -- 2. Chemical structure of vitamin D vitamers -- 2.1 Which chemical structures have vitamin D activity? -- 3. Stability of vitamin D -- 3.1 What can happen to the antirachitic compounds vitamin D2 and vitamin D3 in crystal form and when dissolved in organic solvents? -- 3.2 Exposure to light -- 3.3 Thermal treatment -- 3.4 Treatment at different pH -- 3.5 Oxidants and singlet oxygen -- 3.6 Solvents and vitamin D -- 4. Analytical methodology. , 4.1 Principle for the extraction, detection, and quantification of vitamin D (vitamin D3, 25(OH)D3, vitamin D2, and 25(OH)D2) i ... -- 5. Vitamin D in food -- 5.1 Vitamin D in food from wild fish and animal -- 5.2 Vitamin D in food farmed by man-fish, eggs, milk, meat (pork/beef/chicken), mushrooms, and plants -- 5.2.1 Pork -- 5.2.2 Chicken -- 5.2.3 Beef -- 5.2.4 Organs -- 5.2.5 Mushrooms -- 5.2.6 Bread and other alternative vitamin D products -- 5.3 Fortified food -- 5.4 Processing of food-effects on degradation of vitamin D -- 5.4.1 Effect of exposure to light-not UVB -- 5.4.2 Effect of temperature -- 5.4.3 Storage oxygenation -- 5.4.4 Relative humidity -- 5.4.5 Processing treatments -- 5.4.6 Cooking-antioxidant/pH -- 5.4.7 Food processing summary -- 5.5 Distribution of vitamin D vitamers in food and calculation of total vitamin D activity -- 6. Conclusion -- 7. Summary points -- References -- Further reading -- 56 - Determinants of vitamin D levels from sun exposure: a global perspective -- 1. Introduction -- 2. Vitamin D production from solar UVB exposure -- 3. Factors affecting 25-hydroxyvitamin D concentrations -- 3.1 Seasonal changes in 25-hydroxyvitamin D -- 3.2 Geographic location and ultraviolet B doses: seasonal variations -- 3.3 Meteorological factors -- 3.4 Urban versus rural residence -- 3.5 Travel to sunny locations in winter -- 4. Endogenous characteristics -- 4.1 Effect of age -- 4.2 Obesity -- 4.3 Genetics -- 5. Behavioral determinants -- 5.1 Use of sunscreen -- 5.2 Shade -- 5.3 Messages to get UV exposure mornings and afternoons (the shadow rule) -- 5.4 Sun avoidance because of concern about skin cancer, melanoma -- 5.5 Occupation (outdoors vs. indoors) -- 5.6 Outdoor recreational activities -- 5.7 Lack of knowledge of the benefits of vitamin D -- 5.8 Lifestyle factors associated with reduced sun exposure -- 5.9 Migration/migrants. , 6. Predicting vitamin D deficiency -- 7. Nonvitamin D benefits from solar UV exposure -- 8. Conclusion -- 9. Summary points -- References -- 57 - Vitamin D supplement use as a public health strategy to augment diet and sustain population adequacy -- 1. Introduction -- 2. Thresholds for 25(OH)D -- 3. Country-level guidelines for supplements use -- 4. Supplement use improves vitamin D status: Canada as a case study -- 5. Characteristics of vitamin D supplement users -- 6. Considerations when choosing to take a vitamin D supplement -- 6.1 Type of vitamin D: D3 or D2 -- 6.2 Sources of vitamin D3 -- 6.3 Coingestion with a lipid source -- 6.4 Coingestion with another micronutrient -- 6.5 Taking vitamin D supplements daily versus bolus dosing -- 6.6 Product quality -- 7. Safety of vitamin D supplements -- 8. Guidance is needed for use of vitamin D supplements -- 9. Conclusion -- 10. Summary points -- References -- 58 - Vitamin D and food fortification -- 1. Introduction -- 1.1 Prevalence of low vitamin D status -- 1.2 Dietary recommendations to meet the status gap -- 1.3 Sources of vitamin D and the role of food in meeting nutritional requirements -- 1.4 Are dietary supplements the solution? -- 1.5 Food-based strategies are required -- 2. Current intakes of vitamin D in young and adult populations in North America and Europe and how these compare against dieta ... -- 3. Dietary strategies for increasing vitamin D intake: bridging the gap by food fortification -- 3.1 Traditional food fortification with vitamin D-what is the evidence? -- 3.2 A national case study-Finland -- 3.3 Hierarchy of evidence-randomized controlled trials and metaanalyses -- 4. Consideration of other vitamin D-fortified foods -- 4.1 Additional considerations in relation to forms of vitamin D and addition amounts for traditional fortification -- 4.2 Vitamin D2 versus vitamin D3. , 4.3 25-Hydroxyvitamin D metabolites -- 5. Vitamin D-biofortified foods -- 6. Safety considerations and prerequisite data required prior to initiating public health measures -- 7. Conclusions -- 8. Summary points -- References -- Further reading -- 59 - Bariatric surgery, vitamin D, and bone loss -- 1. Introduction -- 1.1 Bariatric surgery is an effective treatment for obesity -- 1.2 Indications for bariatric surgery -- 1.3 Bariatric surgery procedures -- 1.3.1 Roux-en-Y gastric bypass -- 1.3.2 Sleeve gastrectomy -- 1.3.3 Adjustable gastric band -- 1.3.4 Biliopancreatic diversion with duodenal switch -- 2. Skeletal effects of bariatric surgery -- 2.1 Bone turnover markers -- 2.2 Bone mass -- 2.2.1 Roux-en-Y gastric bypass -- 2.2.2 Sleeve gastrectomy -- 2.2.3 Adjustable gastric band -- 2.2.4 Biliopancreatic diversion with duodenal switch -- 2.3 Bone microstructure -- 2.4 Fracture risk -- 2.5 Comparison with nonsurgical weight loss -- 3. Potential mechanisms of bone loss -- 3.1 Nutritional deficiencies: vitamin D and calcium -- 3.1.1 Vitamin D -- 3.1.2 Calcium -- 3.2 Mechanical unloading -- 3.3 Loss of muscle mass -- 3.4 Adipokines -- 3.4.1 Leptin -- 3.4.2 Adiponectin -- 3.5 Sex steroids -- 3.6 Gut-derived hormones -- 3.6.1 Peptide YY -- 3.6.2 Ghrelin -- 3.6.3 Glucagon-like Peptide-1 -- 3.6.4 Glucose-dependent insulinotropic polypeptide -- 3.7 Bone marrow adipose tissue -- 4. Prevention and treatment of skeletal effects -- 4.1 Universal recommendations -- 4.2 Management of osteoporosis after bariatric surgery -- 5. Summary points -- Acknowledgments -- References -- 1. Introduction -- 2. 25(OH)D synthesis and metabolism -- 3. Heritability of serum 25(OH)D levels -- 4. Genome-wide association studies of 25(OH)D -- 5. Variants with evidence for replicated association with 25(OH)D -- 6. Gene-environment interaction. , 7. Applications and practical implications.
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  • 2
    Online-Ressource
    Online-Ressource
    San Diego :Elsevier Science & Technology,
    Schlagwort(e): Physiology. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (1232 pages)
    Ausgabe: 5th ed.
    ISBN: 9780323913904
    DDC: 612
    Sprache: Englisch
    Anmerkung: Front Cover -- FELDMAN AND PIKE'S VITAMIN D -- FELDMAN AND PIKE'S VITAMIN D: Volume One: Biochemistry, Physiology and Diagnostics -- Copyright -- Contents -- List of contributors -- In memoriam -- Preface to the fifth edition -- List of abbreviations -- Relevant lab values in adults and children -- 1 - Book introduction: Major trends in vitamin D research -- 1. History of the Vitamin D book -- 2. Major trends in the vitamin D field -- 3. Mechanism of action -- 3.1 Historical progression of the mechanisms of action of vitamin D -- 3.2 Current state of VDR genomic actions -- 3.3 Mechanistic homeostasis of vitamin D metabolism -- 4. Mutations in the VDR and critical metabolic enzymes cause childhood rickets -- 5. Vitamin D assays -- 6. Extra-skeletal actions -- 7. Population studies and clinical trials -- 8. Controversy: what constitutes normal or adequate concentrations of vitamin D? -- 9. Vitamin D and autoimmune disease -- 10. Vitamin D and COVID-19 -- 11. Vitamin D and cancer -- 12. Is vitamin D useful for the prevention or treatment of colorectal cancer? -- 12.1 Background -- 12.2 Vitamin D molecular actions in CRC and various cancers to reduce cancer risk, progression, and improve survival -- 12.3 Observational studies of vitamin D and the risk/incidence of developing CRC -- 12.4 Recent RCTs on risk/incidence and overall survival/mortality -- 12.5 Conclusions on the colorectal cancer section -- 13. Closing comments with thanks and appreciation to the many authors, the critical Elsevier staff, and the many readers that m ... -- References -- 2 - Evolution of human skin pigmentation and vitamin D -- 1. Introduction -- 2. The solar context of human skin color evolution -- 3. The nature of the selective factors leading to the evolution of skin pigmentation in early Homo. , 4. Folate conservation and the evolution of permanent protective pigmentation -- 5. Early hominin dispersal out of the tropics and vitamin D production -- 6. The evolution of skin pigmentation in Homo sapiens -- 7. The effects of cultural buffering, rapid migrations, and modern lifestyles on skin color and vitamin D -- 8. Summary points -- References -- Further reading -- 3 - Photobiology of vitamin D -- 1. Introduction -- 2. Historical perspective -- 3. Photobiology of vitamin D -- 3.1 Photosynthesis of vitamin D3 -- 3.2 Regulation of vitamin D synthesis by sunlight -- 3.3 Influence of latitude, season, and time of day on vitamin D synthesis -- 3.4 Influence of sunscreen use, melanin, clothing, glass, and plastics on vitamin D synthesis -- 3.5 Optimizing sunscreen formulation to enhance vitamin D production with minimal erythemal risk -- 4. Role of sunlight and dietary vitamin D in bone health, overall health, and well-being -- 5. Ultraviolet devices for producing vitamin D -- 6. Alternative pathways generating noncanonical active forms of vitamin D and their photoderivatives -- 7. Sunlight, vitamin D, and skin cancer -- 8. Conclusions -- 9. Summary points -- Acknowledgment -- References -- Further reading -- 4 - The activating enzymes of vitamin D metabolism (25- and 1α-hydroxylases) -- 1. Introduction -- 2. General information regarding vitamin D hydroxylases -- 3. Vitamin D3-25-hydroxylases -- 3.1 CYP2R1 -- 3.2 CYP27A1 -- 3.3 Other CYPs -- 4. 25-Hydroxyvitamin D-1α-hydroxylase -- 5. Additional topics -- 5.1 Crystal structures and homology models of vitamin D-related CYPs -- 5.2 Inhibitors of vitamin D-related CYP enzymes -- 5.3 Future directions -- 6. Conclusions -- 7. Summary points -- References -- Further reading -- 5 - CYP24A1: structure, function, and physiological role -- 1. Introduction -- 2. CYP24A1-catalyzed pathways. , 3. C24-oxidation pathway -- 4. C23-hydroxylation pathway -- 5. CYP24A1, a multifunctional enzyme -- 6. Biological relevance of the C24-oxidation pathway -- 7. Structure-function relationships -- 8. Mutations of CYP24A1 in infantile hypercalcemia type 1 -- 9. Preclinical models of infantile hypercalcemia type 1 -- 10. CYP24A1 involvement in other systems -- 11. 24,25(OH)2D3 and chondrocyte maturation -- 12. 24,25(OH)2D3 and fracture repair -- 13. Conclusions -- 14. Summary points -- References -- 6 - Alternative pathways for vitamin D metabolism -- 1. Introduction -- 2. Cytochrome P450scc (CYP11A1): an overview -- 3. Introduction to the skin in a photobiology context -- 4. CYP11A1 mediated metabolism of 7DHC with local and systemic implications -- 5. CYP11A1-mediated metabolism of vitamin D -- 6. Enzymatic activation of lumisterol and tachysterol -- 7. Phenotypic activity of CYP11A1-derived hydroxyderivatives and their mechanism of action -- 7.1 Phenotypic activity -- 7.2 Mechanism of action -- 8. C3-epimerization of vitamin D metabolites -- 9. Phase II conjugation of vitamin D metabolites -- 10. Conclusions -- 11. Summary points -- Acknowledgment -- References -- 7 - Vitamin D-binding protein -- 1. Introduction -- 2. Vitamin D-binding protein: gene and protein structure -- 2.1 Gene -- 2.2 Protein structure -- 2.3 Polymorphisms of vitamin D-binding protein -- 2.4 Post-translational modifications to DBP -- 2.5 Vitamin D-binding protein: synthesis and turnover -- 3. Functions of vitamin D-binding protein -- 3.1 Vitamin D transport -- 3.2 Measurement of vitamin D-binding protein in serum -- 3.3 Vitamin D-binding protein-null mice -- 3.4 Vitamin D-binding protein-null humans -- 3.5 Megalin- and megalin-related proteins-null mice -- 3.6 Free 25(OH)D and vitamin D status -- 4. The vitamin D-binding protein-actin complex. , 4.1 Role of vitamin D-binding protein in the actin-scavenger system -- 4.2 General features of the vitamin D-binding protein-actin structure -- 4.3 Implications for the actin-scavenger system -- 4.4 Implications for intracellular actin binding -- 5. DBP binds fatty acids -- 6. The role of vitamin D-binding protein in inflammatory processes and in the immune system -- 7. Conclusions -- 8. Summary points -- References -- 8 - Regulation of renal vitamin D metabolism -- 1. Introduction -- 2. Major physiologic regulators of renal vitamin D metabolism -- 2.1 Substrate 25(OH)D3 bioavailability -- 2.2 Parathyroid hormone -- 2.3 Fibroblast growth factor 23 -- 2.4 The vitamin D hormone 1,25(OH)2D3 -- 3. Genomic structure and deletion of the CYP27B1 and CYP24A1 genes -- 4. Genomic mechanisms for CYP27B1 regulation -- 5. Genomic mechanisms for CYP24A1 regulation -- 6. Conclusions -- 7. Summary points -- Acknowledgments -- References -- 9 - Regulation of extra-renal synthesis of 1,25(OH)2D -- 1. Introduction -- 2. 1α-OHase and the CYP27B1 gene -- 2.1 Subcellular localization, substrate selectivity, and kinetics of 1α-OHase -- 3. Macrophage 1α-OHase -- 3.1 Effects of parathyroid hormone, calcium, and phosphate on macrophage 1α-OHase -- 3.2 Effects of FGF23 on macrophage 1α-OHase -- 3.3 Vitamin D binding protein and 25(OH)D substrate bioavailability in macrophages -- 3.4 Vitamin D catabolism and macrophage 1,25(OH)2D production -- 4. Macrophage 1α-OHase and responsiveness to immune cell regulators -- 4.1 Pathogen-associated molecular patterns -- 4.2 Cytokines -- 5. Molecular mechanisms for regulation of extrarenal 1α-OHase -- 5.1 Transcriptional regulation -- 5.2 Immune regulation of nitric oxide and electron transport -- 5.3 MicroRNAs as regulators of 1α-OHase -- 6. 1α-OHase in cells other than macrophages -- 6.1 Dendritic cells -- 6.2 Lymphocytes. , 6.3 Keratinocytes -- 6.4 The placenta -- 6.5 Endothelial cells -- 6.6 The parathyroid gland -- 6.7 The growth plate and bone -- 6.8 The brain -- 7. Dysregulated synthesis of 1,25(OH)2D and human disease -- 7.1 1α-OHase and inflammatory disease -- 7.2 Extrarenal 1α-OHase and cancer -- 8. Conclusions and future prospects -- 9. Summary points -- References -- 10 - Structural basis for ligand activity in vitamin D receptor -- 1. Introduction -- 1.1 1α,25-Dihydroxyvitamin D3 recognition by vitamin D receptor -- 1.1.1 Crystal structure of human vitamin D receptor ligand-binding domain in complex with 1α,25-dihydroxyvitamin D3 -- 1.1.2 Rat and zebrafish vitamin D receptor ligand-binding domain-1α,25-dihydroxyvitamin D3 complexes -- 1.1.3 Insights into the apo vitamin D receptor ligand binding-domain structure -- 1.2 Ligand recognition of natural metabolites -- 1.3 Other vitamin D receptor natural ligands -- 1.4 Crystal structures of vitamin D receptor ligand-binding Domain with lithocholic acid -- 1.4.1 An alternative lithocholic acid-binding site revealed by the zebrafish vitamin D receptor ligand-binding domain-lithocholic ... -- 1.5 Structural implications of VDR mutants manifesting in hereditary vitamin d-resistant rickets phenotypes -- 1.6 Recent development of synthetic VDR ligands -- 1.7 Secosteroidal analogs of 1,25(OH)2D3 -- 1.7.1 LCA derivatives -- 1.8 Mimics of 1,25(OH)2D3 -- 1.9 Allosteric effect of 1,25(OH)2D3 within intact VDR-RXR and coregulatory function -- 2. Conclusions and perspectives -- 3. Summary points -- References -- 11 - Genome-wide perspectives on vitamin D receptor actions -- 1. Introduction -- 2. Target genes involved in the regulation of mineral metabolism -- 3. The production of 1,25(OH)2D3 in diverse nonrenal target cells -- 4. Transcriptional mechanism of action of 1,25(OH)2D3. , 5. New insights into transcriptional activation of vitamin D.
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  • 3
    Online-Ressource
    Online-Ressource
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Schlagwort(e): Environmental impact charges--Germany. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (149 pages)
    Ausgabe: 1st ed.
    ISBN: 9783662043943
    DDC: 336.278333790943
    Sprache: Englisch
    Anmerkung: Energy Policies in the European Union -- Copyright -- Preface -- Contents -- Executive Summary -- 1. Energy Policy as a Strategic Element of Economic Policy in Dynamic Open Economies -- 2. Phasing out Nuclear Energy and Core Elements of Sustainable Energy Strategy -- 3. Ecological Tax Reform: Theory, Modified Double Dividend and International Aspects -- 4. The Policy Framework in Europe and Germany -- 5. Optimal Ecological Tax Reform: Options and Recommendations for an EU-Action Plan -- 6. Conclusions -- Appendix -- Bibliography -- List of Tables -- List of Figures.
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  • 4
    Online-Ressource
    Online-Ressource
    San Diego :Elsevier Science & Technology,
    Schlagwort(e): Biophysics. ; Medical physics. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (249 pages)
    Ausgabe: 1st ed.
    ISBN: 9781483141657
    Sprache: Englisch
    Anmerkung: Front Cover -- Elementary Medical Biophysics -- Copyright Page -- Table of Contents -- Dedication -- Foreword -- Introduction -- SECTION I: BASIC PRINCIPLES -- CHAPTER 1. Graphical and mathematical representation of scientific problems -- Introduction -- Straight line -- Hyperbola -- Parabola -- Inverse square equation -- Equations with more than two variables -- CHAPTER 2. Units -- Introduction -- Derived units of the SI -- Multiples and submultiples of the SI units -- Rules for the usage and writing of the SI -- Calibration -- Errors in measurement -- Measurement of temperature -- CHAPTER 3. Forces -- Introduction -- Gravitational force -- Centrifugal force -- Equilibrium between the gravitational force and the centrifugal force -- Electrical forces -- Magnetic forces -- Forces caused by differences in chemical concentration -- Chemotactic forces -- Frictional forces -- Resultant forces -- Work, energy and power -- SECTION II: ELECTRICITY -- CHAPTER 4. The Origin of Electricity and the Flow of Electricity in Conductors -- Introduction -- Atoms and molecules -- Ions -- Isotopes -- Free electrons in a metal -- 'Flow1 of electrons -- Electromotive force -- Opposing electrical force -- Electrical current intensity and resistance -- Resultant resistance -- The flow of electricity through liquids -- Movement of ions in liquids -- Equipotential lines and surfaces -- CHAPTER 5. Production of Electricity in Electrical and Living Cells -- Introduction -- Production of electricity by the living cells of the body-resting membrane potential -- Action potential -- Transmission of the action potential along nerves -- Resultant dipoles in different tissues -- The electrical activity of the heart -- CHAPTER 6. Variation and Measurement of Electrical Currents -- Introduction -- Capacitors -- Time constant -- Electromagnetism. , Production of an alternating current -- Semiconductors -- The oscilloscope -- CHAPTER 7. Bio-Electronic Equipment -- Introduction -- Input devices -- Output devices -- Electrical pacemakers and defibrillators -- Compound apparatus -- SECTION III: LIQUIDS, GASES AND HEAT -- CHAPTER 8. Common Properties of Liquids, Gases and Heat -- Introduction -- States of matter -- The flow of fluids and of heat -- Application of the laws of flow to the human body -- Pressures in fluids caused by gravitational forces -- Measurement of pressures -- CHAPTER 9. Gases and Respiration -- Introduction -- Pressures caused by intermolecular forces -- Principles of pulmonary function -- Partial gas pressures and the exchange of gases between the lungs and the blood -- Artificial respirators -- CHAPTER 10. Liquids and the Circulatory System -- Introduction -- Hydromotive force -- The heart as a pump -- Heart valves -- CHAPTER 11. Fluid Mixtures -- Introduction -- Solutions -- Other mixtures -- Diffusion -- Osmosis -- Filtration -- Exchange of fluids between the capillaries and the tissues -- Active transport -- Dialysis and the artificial kidney -- CHAPTER 12. Heat and the Regulation of Body Temperature -- Introduction -- Quantity of heat and temperature -- The production of heat -- Regulation of body temperature -- Diathermy -- SECTION IV: RAYS AND WAVES -- CHAPTER 13. Electromagnetic Radiation -- Introduction -- General aspects -- Heat waves -- Ultraviolet radiation -- Radio waves -- Gamma radiation -- Lasers -- CHAPTER 14. Light and Sight -- Introduction -- Laws of light -- Lenses -- Optical apparatus -- The eye -- Faulty image formation in the eye -- CHAPTER 15. Radioactivity -- Introduction -- Principles of radioactivity -- Diagnostic uses of radioactivity -- Therapeutic uses of radioactivity -- CHAPTER 16. Sound and Hearing -- Introduction -- Properties of sound. , Production of sound -- Perception of sound by the ear -- Hearing abnormalities -- Sound amplifiers -- Ultrasonics -- SECTION V: MECHANICS -- CHAPTER 17. Machines -- Introduction -- Levers -- Pulleys -- Body mechanics -- APPENDICES -- APPENDIX A: The Elements and their Symbols -- APPENDIX B: Examples of Examination Questions.
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  • 5
    Online-Ressource
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    Cambridge :Cambridge University Press,
    Schlagwort(e): Restaurants -- Ontario -- Ottawa -- Directories. ; Restaurants -- Québec (Province) -- Gatineau -- Guidebooks. ; Electronic books.
    Beschreibung / Inhaltsverzeichnis: Molecular and Cellular Biophysics provides advanced undergraduate and graduate students with a foundation in the basic concepts of biophysics. It will enable them to understand how basic physical concepts can be used in the investigation of biological problems such as protein folding, enzyme catalysis and ion channel permeation.
    Materialart: Online-Ressource
    Seiten: 1 online resource (528 pages)
    Ausgabe: 1st ed.
    ISBN: 9780511344336
    DDC: 571.4
    Sprache: Englisch
    Anmerkung: Cover -- Half-title -- Title -- Copyright -- Contents -- Preface -- Acknowledgements -- Global transitions in proteins -- 1.1 Defining a global state -- 1.2 Equilibrium between two global states -- 1.3 Global transitions induced by temperature -- 1.4 Lysozyme unfolding -- 1.5 Steepness and enthalpy -- 1.6 Cooperativity and thermal transitions -- 1.7 Transitions induced by other variables -- 1.8 Transitions induced by voltage -- 1.9 The voltage sensor of voltage-gated channels -- 1.10 Gating current -- 1.11 Cooperativity and voltage-induced transitions -- 1.12 Compliance of a global state -- Problems for Chapter 1 -- Chapter 2 Molecular forces in biological structures -- 2.1 The Coulomb potential -- 2.2 Electrostatic self-energy -- 2.3 Image forces -- 2.4 Charge-dipole interactions -- 2.5 Induced dipoles -- 2.6 Cation-phi interactions -- 2.7 Dispersion forces -- 2.8 Hydrophobic forces -- 2.9 Hydration forces -- 2.10 Hydrogen bonds -- 2.11 Steric repulsions -- 2.12 Bond flexing and harmonic potentials -- 2.13 Stabilizing forces in proteins -- 2.14 Protein force fields -- 2.15 Stabilizing forces in nucleic acids -- 2.16 Lipid bilayers and membrane proteins -- Problems for Chapter 2 -- Chapter 3 Conformations of macromolecules -- 3.1 n-Butane -- 3.2 Configurational partition functions and polymer chains -- 3.3 Statistics of random coils -- 3.4 Effective segment length -- 3.5 Nonideal polymer chains and theta solvents -- 3.6 Probability distributions -- 3.7 Loop formation -- 3.8 Stretching a random coil -- 3.9 When do molecules act like random coils? -- 3.10 Backbone rotations in proteins: secondary structure -- 3.11 The entropy of protein denaturation -- 3.12 The helix-coil transition -- 3.13 Mathematical analysis of the helix-coil transition -- 3.14 Results of helix-coil theory -- 3.15 Helical propensities -- 3.16 Protein folding. , 3.17 Cooperativity in protein folding -- Problems for Chapter 3 -- Chapter 4 Molecular associations -- 4.1 Association equilibrium in solution -- 4.2 Cooperativity -- 4.2.1 Concerted binding -- 4.2.2 Sequential binding -- 4.2.3 Nearest neighbor interactions -- 4.3 Thermodynamics of associations -- 4.4 Contact formation -- 4.5 Statistical mechanics of association -- 4.6 Translational free energy -- 4.7 Rotational free energy -- 4.8 Vibrational free energy -- 4.9 Solvation effects -- 4.10 Configurational free energy -- 4.11 Protein association in membranes - reduction of dimensionality -- 4.12 Binding to membranes -- Problems for Chapter 4 -- Chapter 5 Allosteric interactions -- 5.1 The allosteric transition -- 5.2 The simplest caseone binding site and one allosteric transition -- 5.3 Binding and response -- 5.4 Energy balance in the one-site model -- 5.5 G-protein coupled receptors -- 5.6 Binding site interactions -- 5.7 The Monod-Wyman-Changeux (MWC) model -- 5.8 Hemoglobin -- 5.9 Energetics of the MWC model -- 5.10 Macroscopic and microscopic additivity -- 5.11 Phosphofructokinase -- 5.12 Ligand-gated channels -- 5.13 Subunit-subunit interactions: the Koshland-Nemethy-Filmer (KNF) model -- 5.14 The Szabo-Karplus (SK) model -- Problems for Chapter 5 -- Chapter 6 Diffusion and Brownian motion -- 6.1 Macroscopic diffusion: Fick's laws -- 6.2 Solving the diffusion equation -- 6.2.1 One-dimensional diffusion from a point -- 6.2.2 Three-dimensional diffusion from a point -- 6.2.3 Diffusion across an interface -- 6.2.4 Diffusion with boundary conditions -- 6.3 Diffusion at steady state -- 6.3.1 A long pipe -- 6.3.2 A small hole -- 6.3.3 A porous membrane -- 6.4 Microscopic diffusion - random walks -- 6.5 Random walks and the Gaussian distribution -- 6.6 The diffusion equation from microscopic theory -- 6.7 Friction -- 6.8 Stokes' law. , 6.9 Diffusion constants of macromolecules -- 6.10 Lateral diffusion in membranes -- Problems for Chapter 6 -- Chapter 7 Fundamental rate processes -- 7.1 Exponential relaxations -- 7.2 Activation energies -- 7.3 The reaction coordinate and detailed balance -- 7.4 Linear free energy relations -- 7.5 Voltage-dependent rate constants -- 7.6 The Marcus free energy relation -- 7.7 Eyring theory -- 7.8 Diffusion over a barrier - Kramers' theory -- 7.9 Single-channel kinetics -- 7.10 The reaction coordinate for a global transition -- Problems for Chapter 7 -- Chapter 8 Association kinetics -- 8.1 Bimolecular association -- 8.2 Small perturbations -- 8.3 Diffusion-limited association -- 8.4 Diffusion-limited dissociation -- 8.5 Site binding -- 8.6 Protein-ligand association rates -- 8.6.1 Evolution of speed -- 8.6.2 Acetylcholinesterase -- 8.6.3 Horseradish peroxidase -- 8.7 Proton transfer -- 8.8 Binding to membrane receptors -- 8.9 Reduction in dimensionality -- 8.10 Binding to DNA -- Problems for Chapter 8 -- Chapter 9 Multi-state kinetics -- 9.1 The three-state model -- 9.2 Initial conditions -- 9.3 Separation of timescales -- 9.4 General solution to multi-state systems -- 9.5 The three-state model in matrix notation -- 9.6 Stationarity, conservation, and detailed balance -- 9.7 Single-channel kinetics: the three-state model -- 9.8 Separation of timescales in single channels: burst analysis -- 9.9 General treatment of single-channel kinetics: state counting -- 9.10 Relation between single-channel and macroscopic kinetics -- 9.11 Loss of stationarity, conservation, and detailed balance -- 9.12 Single-channel correlations: pathway counting -- 9.13 Multisubunit kinetics -- 9.14 Random walks and "stretched kinetics -- Problems for Chapter 9 -- Chapter 10 Enzyme catalysis -- 10.1 Basic mechanisms - serine proteases -- 10.2 Michaelis-Menten kinetics. , 10.3 Steady-state approximations -- 10.4 Pre-steady-state kinetics -- 10.5 Allosteric enzymes -- 10.6 Utilization of binding energy -- 10.7 Kramers' rate theory and catalysis -- 10.8 Proximity and translational entropy -- 10.9 Rotational entropy -- 10.10 Reducing E: transition state complementarity -- 10.11 Friction in an enzyme-substrate complex -- 10.12 General-acid-base catalysis and Brønsted slopes -- 10.13 Acid-base catalysis in Beta-galactosidase -- 10.14 Catalysis in serine proteases and strong H-bonds -- 10.15 Marcus' theory and proton transfer in carbonic anhydrase -- Problems for Chapter 10 -- Chapter 11 Ions and counterions -- 11.1 The Poisson-Boltzmann equation and the Debye length -- 11.2 Activity coefficient of an ion -- 11.3 Ionization of proteins -- 11.4 Gouy-Chapman theory and membrane surface charge -- 11.5 Stern's improvements of Gouy-Chapman theory -- 11.6 Surface charge and channel conductance -- 11.7 Surface charge and voltage gating -- 11.8 Electrophoretic mobility -- 11.9 Polyelectrolyte solutions I. Debye-Hückel screening -- 11.10 Polyelectrolyte solutions II. Counterion-condensation -- 11.11 DNA melting -- Problems for Chapter 11 -- Chapter 12 Fluctuations -- 12.1 Deviations from the mean -- 12.2 Number fluctuations and the Poisson distribution -- 12.3 The statistics of light detection by the eye -- 12.4 Equipartition of energy -- 12.5 Energy fluctuations in a macromolecule -- 12.6 Fluctuations in protein ionization -- 12.7 Fluctuations in a two-state system -- 12.8 Single-channel current -- 12.9 The correlation function of a two-state system -- 12.10 The Wiener-Khintchine theorem -- 12.11 Channel noise -- 12.12 Circuit noise -- 12.13 Fluorescence correlation spectroscopy -- 12.14 Friction and the fluctuation-dissipation theorem -- Problems for Chapter 12 -- Chapter 13 Ion permeation and membrane potential. , 13.1 Nernst potentials -- 13.2 Donnan potentials -- 13.3 Membrane potentials of cells -- 13.3.1 Neurons -- 13.3.2 Vertebrate skeletal muscle -- 13.4 A membrane permeable to Na+ and K+ -- 13.5 Membrane potentials of neurons again -- 13.6 The Ussing flux ratio and active transport -- 13.7 The Goldman-Hodgkin-Katz voltage equation -- 13.8 Membrane pumps and potentials -- 13.9 Transporters and potentials -- 13.10 The Goldman-Hodgkin-Katz current equation -- 13.11 Divalent ions -- 13.12 Surface charge and membrane potentials -- 13.13 Rate theory and membrane potentials -- Problems for Chapter 13 -- Chapter 14 Ion permeation and channel structure -- 14.1 Permeation without channels -- 14.2 The Ohmic channel -- 14.3 Energy barriers and channel properties -- 14.4 Eisenman selectivity sequences -- 14.5 Forces inside an ion channel -- 14.6 Gramicidin A -- 14.7 Rate theory for multibarrier channels -- 14.8 Single-ion channels -- 14.9 Single-file channels -- 14.10 The KcsA channel -- Problems for Chapter 14 -- Chapter 15 Cable theory -- 15.1 Current through membranes and cytoplasm -- 15.2 The cable equation -- 15.3 Steady state in a finite cable -- 15.4 Voltage steps in a finite cable -- 15.5 Current steps in a finite cable -- 15.6 Branches and equivalent cylinder representations -- 15.6.1 Steady state -- 15.6.2 Time constants -- 15.7 Cable analysis of a neuron -- 15.8 Synaptic integration in dendrites: analytical models -- 15.8.1 Impulse responses -- 15.8.2 Realistic synaptic inputs -- 15.9 Compartmental models and cable theory -- 15.10 Synaptic integration in dendrites: compartmental models -- Problems for Chapter 15 -- Chapter 16 Action potentials -- 16.1 The action potential -- 16.2 The voltage clamp and the properties of Na+ and K+ channels -- 16.3 The Hodgkin-Huxley equations -- 16.4 Current-voltage curves and thresholds -- 16.5 Propagation -- 16.6 Myelin. , 16.7 Axon geometry and conduction.
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    München [u.a.] : Hanser
    Schlagwort(e): Kunststoff
    Materialart: Buch
    Seiten: XXXII, 967, BQ 78 S , Ill., graph. Darst, 118 Taf
    Ausgabe: 26., vollig überarb. u. erw. Ausg
    ISBN: 3446178554
    Sprache: Deutsch
    Anmerkung: Literaturverz. S. 39 - 46. - Später zeitschr.-artige Reihe. - Später angezeigt u.d.T.: Kunststoff-Taschenbuch
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  • 7
    Schlagwort(e): Forschungsbericht ; Kombinationskraftwerk ; Gaskraftwerk ; Kohledruckvergasung ; Carbon dioxide capture and storage ; Asche ; Schlacke
    Materialart: Online-Ressource
    Seiten: Online-Ressource (307 S., 25,65 MB) , graph. Darst.
    Sprache: Deutsch
    Anmerkung: Förderkennzeichen BMBF 0327797B. - Verbund-Nr. 01062693 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden. - Auch als gedr. Ausg. vorh , Systemvoraussetzungen: Acrobat reader.
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    Online-Ressource
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    Freiberg : Technische univ., Inst. für Energieverfahrenstechnik und Chemieingenieurwesen
    Schlagwort(e): Forschungsbericht ; Kohlevergasung ; Heißgasreinigung ; Entschwefelung
    Materialart: Online-Ressource
    Seiten: Online-Ressource, [107] p. = 1,41 Mb, text and images , ill., graphs
    Ausgabe: [Elektronische Ressource]
    Sprache: Deutsch
    Anmerkung: Contract BMBF 0326854B; Contract BMWi BEO 31 / 26854B. - Differences between the printed and electronic version of the document arepossible. - nIndex p. 96 , Also available as printed version , Contains: Anlage , Systemvoraussetzungen: Acrobat Reader.
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  • 9
    Schlagwort(e): Forschungsbericht ; Power-to-X ; Kraftstoff ; Kohlendioxid ; Wasserstoff ; Methanol ; MTG-Verfahren ; Ottokraftstoff
    Materialart: Online-Ressource
    Seiten: 1 Online-Ressource (46 Seiten, 1,87 MB) , Illustrationen, Diagramme
    Sprache: Deutsch
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    Schlagwort(e): Forschungsbericht ; Russland ; Erdölgewinnung ; Gas ; Chemisches Produkt ; GTL ; Wertschöpfungskette ; Prozessentwicklung
    Materialart: Online-Ressource
    Seiten: 1 Online-Ressource (55 Seiten, 902 KB) , Illustrationen, Karte
    Sprache: Deutsch
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