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Circannual Rhythms
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Book Synopsis Circannual Rhythms by : Eberhard Gwinner
Download or read book Circannual Rhythms written by Eberhard Gwinner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: In addition to the more or less static properties of the environ ment, plants and animals must cope with its temporal variations. Among the most conspicuous temporal changes to which organisms are exposed are periodic phenomena generated by the rotation of the earth about its axis, its revolution around the sun, and the more complex movements of the moon in relation to both sun and earth. The first two of these astronomical cycles are basic to the familiar daily and annual rhythms, respectively, in the environment. The third generates somewhat more complex cycles, such as those in moonlight and variations in tides. These environmental cycles have provided challenges and opportunities for organisms to adjust their physiology and behavior to them. Indeed, the predictability inherent to these periodic processes has enabled organisms to evolve innate endogenous rhythmic programs that match the environmental cycles and allow, in a variety of different ways, adjustment of biological activities to the cycles of environmental changes. The endogenous nature of rhythmicity was first clearly recognized in the 1930's in daily periodicities, the most widely distributed and best investigated class of biological rhythms of this type. In the 1950's, demonstrations of endogenous tidal and lunar rhythms, which occur in some littoral and marine organisms, ensued. Another decade passed before endogenous annual periodicities were first demonstrated unambiguously.
Book Synopsis Circannual Clocks by : Eric Pengelley
Download or read book Circannual Clocks written by Eric Pengelley and published by Elsevier. This book was released on 2012-12-02 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Circannual Clocks: Annual Biological Rhythms documents the Proceedings of a Satellite Symposium of the 140th Meeting of the American Association for the Advancement of Science held in San Francisco, California, February 25, 1974. The purpose of the symposium was to summarize the present state of knowledge on endogenous annual rhythms (circannual clocks), and to point out their biological significance and importance. The presentations included studies on the following: the circannual rhythms of an arthropod, the cave crayfish, Orconectes pellucidus inermis, and a cnidarian, Campanularia flexuosa; the occurrence, manifestation, and importance of circannual rhythms in birds with different migratory habits; and the importance of circannual rhythms in hibernating mammals. Also covered are the relationships between circannual rhythms and endogenous lunar and tidal rhythms; circannual rhythm of reproduction in male European starlings; the adaptational value of internal annual clocks in birds; the expression and suppression of the circannual antler growth cycle in deer; and circannual rhythms in man.
Download or read book Rhythms in Fishes written by M.A. Ali and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tush, my good lord, this superficial tale Is but a preface of her worthy praise; King Henry the Sixth: Part I, Act V, Sc. 5 This volume is the direct result of a NATO. Advanced Study Institute (ASI) of the same title, held at Bishop's University, Lennoxville, Quebec, Canada in August 1991. All the major presentations had been commissioned, so to speak, during the organisational phase. This was done with the view of not only having a structured ASI, whIch is expected to be a high-level tutorial activity, but also the ensuing volume. As will be indicated in the general introduction, there have been a couple of meetings and publications dealing with rhythms in fishes in the past twenty years. However, as in other disciplines, there has been substantial progress in this field also. Further, I wished to cover almost all aspects and come out with a volme which will be as complete as possible. Of course, this failed to materialise. In spite of starting the arrangements two years before the event, several lecturers were not able to attend due to a number of reasons. Some could be replaced while others could not Taking into account their individual specialties, I asked about twenty active workers in the field to provide provoking overviews, not simply reviews of their own work. Also, this being a NATO.
Book Synopsis Circadian Rhythms and the Human by : D. S. Minors
Download or read book Circadian Rhythms and the Human written by D. S. Minors and published by Butterworth-Heinemann. This book was released on 2013-11-06 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Circadian Rhythms and the Human covers the basic principles behind the human circadian rhythms. This book is composed of 12 chapters that discuss the detection, analysis, and definition of rhythms, specifically exogenous and endogenous rhythms. This book also demonstrates the mechanism of metabolic and gastrointestinal rhythms. The opening chapters deal with the rhythms in living organism; establishing the endogeneity of rhythms; definition of nychthemeral rhythm; methods of measuring the frequency of rhythms; exogenous effects upon the temperature rhythm; interaction between exogenous and endogenous influences; and possible origins of renal rhythmicity. The succeeding chapters consider the effect of exercise at different times of day and the concept of sleep-wakefulness rhythm. The discussion then shifts to the effects of repeated time-zone transitions and the effects of time on drug administration. The closing chapters are devoted to the assessment of work performance during shift work. The book can provide useful information to doctors, students, researchers, and the general reader.
Book Synopsis Introducing Biological Rhythms by : Willard L. Koukkari
Download or read book Introducing Biological Rhythms written by Willard L. Koukkari and published by Springer Science & Business Media. This book was released on 2007-07-29 with total page 675 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing Biological Rhythms is a primer that serves to introduce individuals to the area of biological rhythms. It describes the major characteristics and discusses the implications and applications of these rhythms, while citing scientific results and references. Also, the primer includes essays that provide in-depth historic and other background information for those interested in more specific topics or concepts. It covers a basic cross-section of the field of chronobiology clearly enough so that it can be understood by a novice, or an undergraduate student, but that it would also be sufficiently technical and detailed for the scientist.
Download or read book Seasons of Life written by Leon Kreitzman and published by Profile Books. This book was released on 2010-08-26 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The natural world is full of rhythms. How do birds know when to return to their nesting grounds? What effect do the seasons have on our wellbeing, and how does the season in which we are born affect our subsequent life chances? How did humans get the idea that there were seasons 50,000 years ago? Seasons of Life explains why the seasons occur, the impact of seasonal change and how organisms have evolved to anticipate these changes. For although we mask the effects of seasonal changes by warming our homes, lighting our nights, preserving foods and storing water, we cannot hide from them.
Book Synopsis Biological Rhythms by : Jurgen Aschoff
Download or read book Biological Rhythms written by Jurgen Aschoff and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in biological rhythms has been traced back more than 2,500]ears to Archilochus, the Greek poet, who in one of his fragments suggests ",,(i,,(VWO'KE o'olos pv{}J.tos txv{}pW7rOVS ~XH" (recognize what rhythm governs man) (Aschoff, 1974). Reference can also be made to the French student of medicine J. J. Virey who, in his thesis of 1814, used for the first time the expression "horloge vivante" (living clock) to describe daily rhythms and to D. C. W. Hufeland (1779) who called the 24-hour period the unit of our natural chronology. However, it was not until the 1930s that real progress was made in the analysis of biological rhythms; and Erwin Bunning was encouraged to publish the first, and still not outdated, monograph in the field in 1958. Two years later, in the middle of exciting discoveries, we took a breather at the Cold Spring Harbor Symposium on Biological Clocks. Its survey on rules considered valid at that time, and Pittendrigh's anticipating view on the temporal organization of living systems, made it a milestone on our way from a more formalistic description of biological rhythms to the understanding of their structural and physiological basis.
Book Synopsis Military Strategies for Sustainment of Nutrition and Immune Function in the Field by : Institute of Medicine
Download or read book Military Strategies for Sustainment of Nutrition and Immune Function in the Field written by Institute of Medicine and published by National Academies Press. This book was released on 1999-05-13 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every aspect of immune function and host defense is dependent upon a proper supply and balance of nutrients. Severe malnutrition can cause significant alteration in immune response, but even subclinical deficits may be associated with an impaired immune response, and an increased risk of infection. Infectious diseases have accounted for more off-duty days during major wars than combat wounds or nonbattle injuries. Combined stressors may reduce the normal ability of soldiers to resist pathogens, increase their susceptibility to biological warfare agents, and reduce the effectiveness of vaccines intended to protect them. There is also a concern with the inappropriate use of dietary supplements. This book, one of a series, examines the impact of various types of stressors and the role of specific dietary nutrients in maintaining immune function of military personnel in the field. It reviews the impact of compromised nutrition status on immune function; the interaction of health, exercise, and stress (both physical and psychological) in immune function; and the role of nutritional supplements and newer biotechnology methods reported to enhance immune function. The first part of the book contains the committee's workshop summary and evaluation of ongoing research by Army scientists on immune status in special forces troops, responses to the Army's questions, conclusions, and recommendations. The rest of the book contains papers contributed by workshop speakers, grouped under such broad topics as an introduction to what is known about immune function, the assessment of immune function, the effect of nutrition, and the relation between the many and varied stresses encountered by military personnel and their effect on health.
Book Synopsis Human Circadian Physiology by : Charles A. Czeisler
Download or read book Human Circadian Physiology written by Charles A. Czeisler and published by . This book was released on 1978 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Neurobiology of Circadian Timing by :
Download or read book The Neurobiology of Circadian Timing written by and published by Elsevier. This book was released on 2012-12-06 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading authors review the state-of-the-art in their field of investigation, and provide their views and perspectives for future researchChapters are extensively referenced to provide readers with a comprehensive list of resources on the topics coveredAll chapters include comprehensive background information and are written in a clear form that is also accessible to the non-specialist Leading authors review the state-of-the-art in their field of investigation, and provide their views and perspectives for future research Chapters are extensively referenced to provide readers with a comprehensive list of resources on the topics covered All chapters include comprehensive background information and are written in a clear form that is also accessible to the non-specialist
Book Synopsis Bird Migration by : Eberhard Gwinner
Download or read book Bird Migration written by Eberhard Gwinner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: E. GWINNER! The phenomenon of bird migration with its large scale dimensions has attracted the attention of naturalists for centuries. Worldwide billions of birds leave their breeding grounds every autumn to migrate to areas with seasonally more favor able conditions. Many of these migrants travel only over a few hundred kilo meters but others cover distances equivalent to the circumference of the earth. Among these long-distance migrants are several billion birds that invade Africa every autumn from their West and Central Palaearctic breeding areas. In the Americas and in Asia the scope of bird migration is of a similar magnitude. Just as impressive as the numbers of birds are their achievements. They have to cope with the enormous energetic costs of long-distance flying. particularly while crossing oceans and deserts that do not allow replenishment of depleted fat reserves. They have to appropriately time the onset and end of migrations. both on a daily and annual basis. And finally. they have to orient their migratory movements in space to reach their species- or population-specific wintering and breeding grounds, irrespective of the variable climatic conditions along their migratory routes.
Book Synopsis Circadian Rhythm by : Mohamed A. El-Esawi
Download or read book Circadian Rhythm written by Mohamed A. El-Esawi and published by BoD – Books on Demand. This book was released on 2018-07-04 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Circadian clocks are endogenous and temperature-compensating timekeepers that provide temporal organization of biological processes in living organisms. Circadian rhythms allow living organisms to adapt to the daily light cycles associated with Earth's rotation and to anticipate and prepare for precise and regular environmental changes. This book discusses the fundamental advances of how the circadian clock regulates critical biological functions as well as the cellular and molecular mechanisms controlling circadian rhythm in living organisms. It also provides new insights into and sheds new light on the current research trends and future research directions related to circadian rhythm. This book provokes interest in many readers, researchers and scientists, who can find this information useful for the advancement of their research works towards a better understanding of circadian rhythm regulatory mechanisms.
Book Synopsis Biological Timekeeping: Clocks, Rhythms and Behaviour by : Vinod Kumar
Download or read book Biological Timekeeping: Clocks, Rhythms and Behaviour written by Vinod Kumar and published by Springer. This book was released on 2017-02-15 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a concise, comprehensive and up-to-date account of fundamental concepts and potential applications of biological timekeeping mechanisms in animals and humans. It also discusses significant aspects of the organization and importance of timekeeping mechanisms in both groups. Divided into seven sections, it addresses important aspects including fundamental concepts; animal and human clocks; clock interactions; clocks and metabolism and immune functions; pineal, melatonin and timekeeping; and clocks, photoperiodism and seasonal behaviours. The book also focuses on biological clock applications in a 24x7 human society, particularly in connection with life-style associated disorders like obesity and diabetes. It is a valuable resource for advanced undergraduates, researchers and professionals engaged in the study of the science of biological timekeeping.
Book Synopsis The Rhythms Of Life by : Leon Kreitzman
Download or read book The Rhythms Of Life written by Leon Kreitzman and published by Profile Books. This book was released on 2011-09-30 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular science at its most exciting: the breaking new world of chronobiology - understanding the rhythm of life in humans and all plants and animals. The entire natural world is full of rhythms. The early bird catches the worm -and migrates to an internal calendar. Dormice hibernate away the winter. Plants open and close their flowers at the same hour each day. Bees search out nectar-rich flowers day after day. There are cicadas that can breed for only two weeks every 17 years. And in humans: why are people who work anti-social shifts more illness prone and die younger? What is jet-lag and can anything help? Why do teenagers refuse to get up in the morning, and are the rest of us really 'larks' or 'owls'? Why are most people born (and die) between 3am-5am? And should patients be given medicines (and operations) at set times of day, because the body reacts so differently in the morning, evening and at night? The answers lie in our biological clocks the mechanisms which give order to all living things. They impose a structure that enables us to change our behaviour in relation to the time of day, month or year. They are reset at sunrise and sunset each day to link astronomical time with an organism's internal time.
Book Synopsis Circadian Rhythms: A Very Short Introduction by : Russell Foster
Download or read book Circadian Rhythms: A Very Short Introduction written by Russell Foster and published by Oxford University Press. This book was released on 2017-03-13 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The earth's daily rotation affects just about every living creature. From dawn through to dusk, there are changes in light, temperature, humidity, and rainfall. However, these changes are regular, rhythmic and, therefore, predictable. Thus, the near 24 hour circadian rhythm is innate: a genetically programmed clock that essentially ticks of its own accord. This Very Short Introduction explains how organisms can "know" the time and reveals what we now understand of the nature and operation of chronobiological processes. Covering variables such as light, the metabolism, human health, and the seasons, Foster and Kreitzman illustrate how jet lag and shift work can impact on human well-being, and consider circadian rhythms alongside a wide range of disorders, from schizophrenia to obesity. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.
Download or read book Chronobiology written by Jay C. Dunlap and published by Sinauer Associates, Incorporated. This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers circadian rhythmicity; analyses of the behavioural and ecological importance of rhythms and their theoretical bases; the comparative anatomy, physiology, genetics and molecular biology of organisms within circadian clocks; real-world examples; classic research and 6 cutting-edge research areas.
Book Synopsis Hypothalamic Integration of Circadian Rhythms by : R.M. Buijs
Download or read book Hypothalamic Integration of Circadian Rhythms written by R.M. Buijs and published by Elsevier. This book was released on 1996-12-03 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Summer School of Brain Research, on which this book is based, was organized by the Netherlands Institute for Brain research (NIBR), which has a rich history dating back to the beginning of the century. The focus of interest in this present volume of Progress in Brain Research are the few thousand neurons at the base of the hypothalamus that form the biological clock. Attention is focused on the mechanisms underlying the generation of circadian rhythmicity within our biological clock, which is still far from understood. Contributions originating from many disciplines give updates on the latest theories on the molecular and electrophysiological basis of the pacemaker mechanism, and the various approaches used in different species. Attention is also paid to the way the signal of the biological clock is transferred to the rest of the central nervous system. New data on the role of the suprachiasmatic nucleus and its impact on the functioning of the human being is presented. Altogether an excellent volume which will further the understanding of this elusive material.
