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  • 1
    Call number: C020:146
    Keywords: Reproduction / physiology ; Endocrine Glands / physiology ; Endocrine System Diseases / physiopathology
    Pages: xv, 928 p. : ill.
    Edition: 6th ed.
    ISBN: 9781416049074
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  • 2
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    Cham : Springer International Publishing
    Keywords: Life sciences ; Biology / Philosophy ; Coding theory ; Cytology ; Ecology ; Semantics ; Life sciences ; Ecology ; Cell Biology ; Semantics ; Philosophy of Biology ; Coding and Information Theory ; Springer eBooks
    Description / Table of Contents: Acknowledgments Introductory Chapter -- The Life and Education of Jakob von Uexküll. The Basis of the Environmental Theory -- The Subjective World of the Umwelt -- The Structure of the Umwelt -- Environment and Meaning -- Influences and Interpretations of the Work of Uexküll -- Conclusion. References -- Index
    Abstract: The genetic code appeared on Earth at the origin of life, and the codes of culture arrived almost four billion years later. For a long time it has been assumed that these are the only codes that exist in Nature, and if that were true we would have to conclude that codes are extraordinary exceptions that appeared only at the beginning and at the end of the history of life. In reality, various other organic codes have been discovered in the past few decades and it is likely that more will come to light in the future. The existence of many organic codes in Nature is therefore an experimental fact, but also more than that. It is one of those facts that have extraordinary implications. In this book it is shown that the genetic code was a precondition for the origin of the first cells, the signal transduction codes divided the first cells into three primary kingdoms (Archaea, Bacteria and Eukarya), the splicing codes were instrumental to the origin of the eukaryotic nucleus, the histone code provided a new regulation system in eukaryotic genomes, and the cytoskeleton codes allowed the Eukarya to perform internal movements, including those of mitosis and meiosis. It is shown, furthermore, that organic codes had a key role in multicellular life, in particular in the origin of animals, the origin of mind and the origin of language. The great events of macroevolution, in other words, were associated with the appearance of new organic codes, and we can easily understand why. The reason is that a new code brings into existence something that has never existed before because it creates arbitrary associations, relationships that are not determined by physical necessity. Another outstanding implication is the fact that codes involve meaning and we need therefore to introduce in biology, with the standard methods of science, not only the concept of biological information but also that of biological meaning. The research on biological codes, in conclusion, is bringing to light new mechanisms in evolution and new fundamental concepts in science. This research is the field of Code Biology, the study of all codes of life, from the genetic code to the codes of culture, from the origin of life to the origin of man
    Pages: XXI, 224 p. 2 illus. : online resource.
    ISBN: 9783319145358
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  • 3
    Keywords: Medicine ; Biomedical Engineering ; Cardiology ; Biomedicine ; Biomedical Engineering/Biotechnology ; Applications of Nonlinear Dynamics and Chaos Theory ; Cardiology ; Biomedical Engineering ; Springer eBooks
    Description / Table of Contents: Part I: Introduction -- 1. Introducing Complex Cardiovascular Physiology -- Part II: Methods -- 2. Symbolic Dynamics, Poincaré Plot Analysis and Compression Entropy Estimate Complexity in Biological Time Series -- 3. Information Decomposition: A tool to Dissect Cardiovascular and Cardiorespiratory Complexity -- 4. Multiscale Entropy: Recent Advances -- 5. Introduction to Complex Systems Analysis with Wavelets -- 6. Intermittency-Driven Complexity in Signal Processing -- 7. Self-Similarity and Detrended Fluctuation Analysis of Cardiovascular Signals -- 8. Time-varying Cardiovascular Complexity with focus on Entropy and Lyapunov Exponents -- 9. Time-frequency analysis of cardiovascular signals and their dynamic interactions -- Part III: Applications -- 10. Measurements of Cardiovascular Signal Complexity for Advanced Clinical Applications -- 11. Applications of Complexity Analysis in Clinical Heart Failure -- 12. Heart Rate Complexity Associated with Diabetic Cardiac Neuropathy -- 13. Applications of Heartbeat Complexity Analysis to Depression and Bipolar Disorder -- 14. Cardiac Autonomic changes in Epilepsy -- 15. Applications of Nonlinear Methods to Atrial Fibrillation -- 16. Complex and Nonlinear Analysis of Heart Rate Variability in the Assessment of Fetal and Neonatal Wellbeing -- 17. ARFIMA-GARCH Modelling of HRV: Clinical Application in Acute Brain Injury -- 18. Age and Gender Dependency of Complexity Measures of Short-term Heart Rate Time Series -- 19. Complexity and Nonlinearities in Cardiorespiratory Signals in Sleep and Sleep Apnea
    Abstract: This book reports on the latest advances in complex and nonlinear cardiovascular physiology aimed at obtaining reliable, effective markers for the assessment of heartbeat, respiratory, and blood pressure dynamics. The chapters describe in detail methods that have been previously defined in theoretical physics such as entropy, multifractal spectra, and Lyapunov exponents, contextualized within physiological dynamics of cardiovascular control, including autonomic nervous system activity. Additionally, the book discusses several application scenarios of these methods. The text critically reviews the current state-of-the-art research in the field that has led to the description of dedicated experimental protocols and ad-hoc models of complex physiology. This text is ideal for biomedical engineers, physiologists, and neuroscientists. This book also: Expertly reviews cutting-edge research, such as recent advances in measuring complexity, nonlinearity, and information-theoretic concepts applied to coupled dynamical systems Comprehensively describes applications of analytic technique to clinical scenarios such as heart failure, depression and mental disorders, atrial fibrillation, acute brain lesions, and more Broadens readers' understanding of cardiovascular signals, heart rate complexity, heart rate variability, and nonlinear analysis
    Pages: VIII, 537 p. 133 illus., 72 illus. in color. : online resource.
    ISBN: 9783319587097
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  • 4
    ISSN: 0309-1651
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0309-1651
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The nutritional dynamics of Gymnotus carapo were studied in 3253 male and female specimens collected in the Lobo Reservoir over a period of 18 consecutive months (September 1978 to February 1980). Analysis of the repletion stages, of mean repletion grade and index showed that the fishes exhibited better feeding conditions after the reproductive season. The condition factor was determined and shown to be influenced by the ovarian weight at the time of reproduction, but was little influenced by testis weight. The effect of stomach weight is negligible for both males and females.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Weakfish Cynoscion regalis were collected from commercial fisheries in the Chesapeake Bay and the Middle Atlantic Bight (n=4380) during 1989–1992 and their reproductive biology assessed using the gonadosomatic index, macroscopic gonad stages, oocyte diameter distributions, microscopic whole oocyte analysis and histology. Sex ratios were approximately 3:1, females to males, in 1990–1992. Most fish (90%) attained sexual maturity by age 1 and at a small size. Estimated mean length at first maturity was: 164mm total length (TL) for males, and 170 mm TL for females. Weakfish spawn within the Chesapeake Bay, as far north as the Virginia/ Maryland border. Although spawning occurred during May–August and gonad development and initiation of spawning was synchronous, cessation of spawning was asynchronous. There was no indication that older fish exhibited a more extended spawning season than younger fish. Weakfish are multiple spawners with indeterminate fecundity. Oocyte development is asynchronous with oocytes of all stages being present in developed ovaries. Because of the complex and dynamic weakfish ovarian cycle, typical methods of assessing reproduction, such as the GSI and macroscopic gonad stages, are inadequate for this species if not used in conjunction with more detailed methods such as histology.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0044-2313
    Keywords: Tin complexes ; thiolated ligands ; 119Sn Mössbauer spectra ; molecular dynamics ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zinn(IV)-, Monomethylzinn(IV)- und Dimethylzinn(IV)-Komplexe mit Thiolschwefel- und heterocyclischen Stickstoff-Donatoren: Moleküldynamik und Struktur bei 119Sn-Mössbauer-SpektrenDie Moleküldynamik der Komplexe Sn(SPyN)4 (1), SnCl2(SPyN)2 (2), MeSn(SPy)3 (3), MeSnCl(SPyN)2 (4), Me2Sn(TCy)2 (5), Me2SnCl(TOx) (6) und Me2Sn(TUr) (7) (HSPy = 2-Mercaptopyridin; HSPyN = 2-Mercaptopyrimidin; HTCy = 2-Thiocytosin; HTOx = 8-Thiochinolin; H2TUr = 2-Thiouracil) wurde mit 119Sn-Mössbauer-Spektroskopie bei verschiedenen Temperaturen untersucht. Die Flächen unter den Resonanzlinien wurden als Funktion der Temperatur bestimmt und daraus die Debye-Temperaturen, die cut-off-Frequenzen wie auch die rückstoßfreien Anteile (Lamb-Mössbauer-Faktor) und die mittleren quadratischen Auslenkungen der 119Sn-Atome berechnet. Durch Fingerprintvergleiche auf Grund von Literaturdaten wurden monomere Strukturen den Komplexen (1) bis (4) und (6) zugeordnet, während (5) und (7) an der Grenze monomer eindimensionaler Polymerer liegen. Die Ergebnisse werden auf der Basis bekannter Kristall- und Molekülstrukturen diskutiert. Die Umgebung der Zinnatome wird durch Punktladungsmodell-Berechnungen von Kernquadrupolaufspaltungs-Parametern simuliert; Molekülstrukturen für die Komplexe (5) bis (7), von denen keine Röntgendaten verfügbar sind, werden vorgeschlagen.
    Notes: The molecular dynamics of the complexes Sn(SPyN)4 (1), SnCl2(SPyN)2 (2), MeSn(SPy)3 (3), MeSnCl(SPyN)2 (4), Me2Sn(TCy)2 (5), Me2SnCl(TOx) (6), and Me2Sn(TUr) (7) [HSPy = 2-mercaptopyridine; HSPyN = 2-mercaptopyrimidine; HTCy = 2-thiocytosine; HTOx = 8-thioquinoline; H2TUr = 2-thiouracil] has been investigated by variable temperature 119Sn Mössbauer spectroscopy. The area under the resonant peaks has been determined as function of temperature, from which Debye temperatures and cut-off frequencies, as well as recoil-free fractions (Lamb Mössbauer factor) and mean square displacements of 119Sn, have been calculated. By fingerprint procedures on the basis of literature data, monomeric structures are attributed to complexes (1)-(4) and (6), while (5) and (7) lie in the borderline monomersmonodimensional polymers. The results are discussed on the basis of known crystal and molecular structures. The nature of the environment of tin atoms has been simulated by point-charge model calculations of nuclear quadrupole splitting parameters; molecular structures are proposed for complexes (5)-(7), where no X-ray diffractometric data are available.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 10
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    German Medical Science; Düsseldorf, Köln
    In:  51. Jahrestagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie; 20060910-20060914; Leipzig; DOC06gmds169 /20060901/
    Publication Date: 2006-09-25
    Keywords: ddc: 610
    Language: English
    Type: conferenceObject
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