Rhythms And Cycles

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Cycles Of Nature

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Author : Andrew Ahlgren
language : en
Publisher: National Science Teachers Assn
Release Date : 1990

Cycles Of Nature written by Andrew Ahlgren and has been published by National Science Teachers Assn this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Education categories.

This book is an outlined for the short study (1- to 2-weeks) of chronobiology, a field of science that explores the relationships between time and biological functions. It develops step-by-step the reasoning that leads to the current scientific understanding of biological rhythms. The unit can be inserted into a standard middle or high school biology course. Because the scientific study of biological rhythms begins with data, Chapter 1 provides a brief review of the ways to collect, graph, and interpret data. Chapter 2 introduces some of the cycles in nature, especially those of the human body-from dream cycles to menstruation to body temperature. Chapter 3 explores how these cycles come about and explains the differences between external and internal influences. Chapter 4 explores the internal workings of organisms to determine whether there is a single master source of timing information that synchronizes an organism's many interacting cycles. Chapter 5 discusses the impact of rhythms on society and asks how an understanding of them could bring progress in medicine, work schedules, and everyday life. Chapter 6 offers a brief historical perspective on the study of biological rhythms, and chapter 7 outlines eight activities that demonstrate cycles in chemicals, plants, and animals. Each activity includes an introduction, materials, set-up, procedures, and possible extensions. (KR)

Cycles In Humans And Nature

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Author : John T. Burns
language : en
Publisher: Scarecrow Press
Release Date : 1994

Cycles In Humans And Nature written by John T. Burns and has been published by Scarecrow Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Nature categories.

This volume is the first bibliography to be published on the broad subject of cycles in humans and nature. The importance of cycles as a model for understanding the world is as old as the Bible and other ancient records of past civilizations. The modern investigation of diverse fields of study has resulted in the concept of cycles once again gaining center stage as an interdisciplinary model for reaching a better understanding of the nature of our universe. Major categories of cycles covered in this bibliography are: Astrophysics, Atmospheric Science, Biology, Botany, Geoscience, Medicine, Social Science, Zoology, and Interdisciplinary. Over 600 sources of information on thousands of cycles are carefully reviewed to enable the reader maximum access to the most substansive evidence for cycles in each field. A balance of general readings as well as more technical articles is maintained throughout the bibliography. An introduction provides an overview of the broad spectrum of information on cycles, indicating those areas of controversy as well as of agreement. The claims of cycles in social unrest, economics, and climatology are noted, as well as the more well-known cycles in biology, physiology, and medicine. The volume has an extensive table of contents to facilitate the location of many subcategories of cycles. An extensive index also enables the location of citations for specific researchers and for numerous subjects.

Ultradian Rhythms In Life Processes

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Author : David Lloyd
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Ultradian Rhythms In Life Processes written by David Lloyd and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.

Profound progress has been made in the fields of chronobiology and psychobiology within the past decade, in theory, experiment and clinical application. This volume integrates these new developments on all levels from the molecular, genetic and cellular to the psycho social processes of everyday life. We present a balanced variety of research from workers around the globe, who discuss the funda mental significance of their approach for a new understanding of the central role of ultradian rhythms in the self-organizing and adaptive dynamics of all life processes. The years since the publication of Ultra dian rhythms in physiology and behavior by Schultz and Lavie in 1985 have seen a burgeoning realization of the ubiquity and importance of ultradian rhythms within and between every level of the psychobiological hierarchy. The experimental evidence lies scattered through a disparate litera ture, and this volume attempts, albeit in a highly selective manner, to bring together some of the different strands. The editors are very conscious of the omission of many important current aspects; e.g. we have not included any of the fascinating and indeed long and well-established experiments with plants (Bunning 1971, 1977; Guillaume and Koukkari 1987; Millet et al. 1988; 10hnsson et al. 1990) that are widely regarded as having initiated the whole field of chronobiology (De Mairan 1729). Neither have we reviewed recent developments on glycolytic oscillations, since a great deal of the seminal work was already completed by 1973 (Chance et al. 1973).

An Introduction To Biological Rhythms

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Author : John Palmer
language : en
Publisher: Elsevier
Release Date : 2012-12-02

An Introduction To Biological Rhythms written by John Palmer and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Science categories.

An Introduction to Biological Rhythms provides an introduction to the subject of biological rhythms. The opening chapters present an overview of biological rhythms, their properties, and clock control, followed by a survey of rhythms in plants and animals. The subsequent chapters cover tidal rhythms and human rhythms; sun-compass, star-compass, and moon compass orientation of animals; the clock control of plant and animal photoperiodism; evidence for external timing of biological clocks; and models and mechanisms for endogenous timekeeping. The book also includes biographical sketches of Dr. Frank A. Brown, Jr., Morrison Professor of Biology at Northwestern University; and Dr. Leland N. Edmunds, Jr., Professor and Head of the Division of Biological Sciences at the Stony Brook campus of the State University of New York. This book is meant for the inquiring student seeking an introduction to the subject and for busy biologists in other fields who want to get a ""feel"" for the subject. It can also serve as a basic textbook for the existing biorhythms courses and act as a seed for the inauguration of new courses.

Ultradian Rhythms From Molecules To Mind

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Author : David Lloyd
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-08-27

Ultradian Rhythms From Molecules To Mind written by David Lloyd and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-08-27 with Science categories.

5. 1. 1 Biological Rhythms and Clocks From an evolutionary perspective, the adaptation of an organism’s behavior to its environment has depended on one of life’s fundamental traits: biological rhythm generation. In virtually all light-sensitive organisms from cyanobacteria to humans, biological clocks adapt cyclic physiology to geophysical time with time-keeping properties in the circadian (24 h), ultradian (24 h) domains (Edmunds, 1988; Lloyd, 1998; Lloyd et al. , 2001; Lloyd and Murray, 2006; Lloyd, 2007; Pittendrigh, 1993; Sweeney and Hastings, 1960) By definition, all rhythms exhibit regular periodicities since they constitute a mechanism of timing. Timing exerted by oscillatory mechanisms are found throughout the biological world and their periods span a wide range from milliseconds, as in the action potential of n- rons and the myocytes, to the slow evolutionary changes that require thousands of generations. In this context, to understand the synchronization of a population of coupled oscillators is an important problem for the dynamics of physiology in living systems (Aon et al. , 2007a, b; Kuramoto, 1984; Strogatz, 2003; Winfree, 1967). Circadian rhythms, the most intensively studied, are devoted to measuring daily 24 h cycles. A variety of physiological processes in a wide range of eukaryotic organisms display circadian rhythmicity which is characterized by the following major properties (Anderson et al. , 1985; Edmunds, 1988): (i) stable, autonomous (self-sustaining) oscillations having a free-running period under constant envir- mental conditions of ca.

Moon Rhythms In Nature

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Author : Klaus-Peter Endres
language : en
Publisher:
Release Date : 2002

Moon Rhythms In Nature written by Klaus-Peter Endres and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Body, Mind & Spirit categories.

Brings together a wide range of observations of lunar influences on living organisms from plants to humans.

Resetting Your Rhythms Optimizing Ultradian Cycles For Energy And Vitality

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Author : Gaurav Garg
language : en
Publisher: Gaurav Garg
Release Date : 2023-08-23

Resetting Your Rhythms Optimizing Ultradian Cycles For Energy And Vitality written by Gaurav Garg and has been published by Gaurav Garg this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-23 with Education categories.

Our bodies are symphonies of rhythms. Beneath the hum of life's busy motion, inside the cells of every tissue, molecular oscillations mark time's passage like the world's smallest beating drums. These cellular pulses resonate across scales into larger biological waves – cycling hormones coursing day and night, electrical brain storms waxing and waning, silent marrow churning out blood's metronomic tempo. We are creatures not of static Being, but of Becoming – beings built upon change, growth and decay. Yet unlike random chaos, the change that shapes us flows in patterns anchored deep within our genetic code. Our rhythms of activity and rest, waking and sleeping, eating and fasting, learning and forgetting, sensing and responding have all evolved to turn in sync with the predictable cycles of our spinning planet. Circadian we are, and Ultradian too. But modern life has led us astray. We doused night with artificial light, ate at odd hours, filled waking moments with distraction, turned days into endless work, and mistook convenience for progress. In banishing nature’s rhythms, we damaged our innate temporal order. We disrupted healthy oscillations once harmonized through epochs past. Now we suffer mounting ills. Yet latent within our cells, the ancient rhythms persevere. To flourish, we need but realign: Dim electric nights, welcome natural dawns, move, feast, and rest in moderation. Timing is medicine. The body heals in rhythm, thrives in rhythm. And so might we. This book charts a course back into flow with nature’s temporal patterns. Here lies the fruit of chronobiology – illuminating our biological heritage to live timely. Master these cycles, and transform your days. Peak performance, robust health, and deep meaning emerge from within. Come. Let us synchronize our lives anew.

Chronobioengineering

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Author : Donald McEachron
language : en
Publisher: Morgan & Claypool Publishers
Release Date : 2012-10-01

Chronobioengineering written by Donald McEachron and has been published by Morgan & Claypool Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-01 with Technology & Engineering categories.

This book represents the first in a two-volume set on biological rhythms. This volume focuses on supporting the claim that biological rhythms are universal and essential characteristics of living organisms, critical for proper functioning of any living system. The author begins by examining the potential reasons for the evolution of biological rhythms: (1) the need for complex, goal-oriented devices to control the timing of their activities; (2) the inherent tendency of feedback control systems to oscillate; and (3) the existence of stable and powerful geophysical cycles to which all organisms must adapt. To investigate the second reason, the author enlists the help of biomedical engineering students to develop mathematical models of various biological systems. One such model involves a typical endocrine feedback system. By adjusting various model parameters, it was found that creating a oscillation in any component of the model generated a rhythmic cascade that made the entire system oscillate. This same approach was used to show how daily light/dark cycles could cascade rhythmic patterns throughout ecosystems and within organisms. Following up on these results, the author discusses how the twin requirements of internal synchronization (precise temporal order necessary for the proper functioning of organisms as complex, goal-oriented devices) and external synchronization (aligning organisms' behavior and physiology with geophysical cycles) supported the evolution of biological clocks. The author then investigates the clock systems that evolved using both conceptual and mathematical models, with the assistance of Dr. Bahrad Sokhansanj, who contributes a chapter on mathematical formulations and models of rhythmic phenomena. With the ubiquity of biological rhythms established, the author suggests a new classification system: the F4LM approach (Function; Frequency; waveForm; Flexibility; Level of biological system expressing rhythms; and Mode of rhythm generation) to investigate biological rhythms. This approach is first used on the more familiar cardiac cycle and then on neural rhythms as exemplified and measured by the electroencephalogram. During the process of investigating neural cycles, the author finds yet another reason for the evolution of biological rhythms: physical constraints, such as those imposed upon long distance neural signaling. In addition, a common theme emerges of a select number of autorhythmic biological oscillators imposing coherent rhythmicity on a larger network or system. During the course of the volume, the author uses a variety of observations, models, experimental results, and arguments to support the original claim of the importance and universality of biological rhythms. In Volume 2, the author will move from the establishment of the critical nature of biological rhythms to how these phenomena may be used to improve human health, well-being, and productivity. In a sense, Volume 1 focuses on the chronobio aspect of chronobioengineering while Volume 2 investigates methods of translating this knowledge into applications, the engineering aspect of chronobioengineering.

Annual Lunar And Tidal Clocks

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Author : Hideharu Numata
language : en
Publisher: Springer
Release Date : 2015-01-20

Annual Lunar And Tidal Clocks written by Hideharu Numata and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-01-20 with Science categories.

There is more to biological rhythms than circadian clocks. This book aims at promoting the exciting potential of a deeper understanding of circannual, circatidal, and circalunar clocks. It highlights new developments, summarizes existing knowledge, and integrates different perspectives with the tools and ideas of diverse fields of current biology. For predominantly pragmatic reasons, research in recent decades was mostly concerned with circadian clocks. Clocks on other timescales, however, have been largely neglected and therefore still appear "enigmatic". Thanks to the rapid development of methods in molecular biology as well as in ecology, we are now able to re-approach these clocks. Laboratories around the world are showing fresh interest and substantial progress is being made in many independent projects. The book's two sections address the moon-derived circatidal, circasemilunar, and lunar cycles on the one hand (10 chapters), and the sun-derived circannual cycles on the other (6 chapters). This work brings together authors with an expansive array of expertise and study systems, ranging from tidal cycles of marine invertebrates to annual cycles of birds and mammals, and from behavioral to genetic and epigenetic backgrounds. While great challenges remain to be mastered, the book aims at conveying the excitement of unraveling, broadly, the rhythms of life.

Cycles In Your Life

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Author : Darrell Huff
language : en
Publisher:
Release Date : 1965

Cycles In Your Life written by Darrell Huff and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Cycles categories.