Human Clocks

Human Clocks
Author: Claudine Sauvain-Dugerdil
Publisher: Peter Lang
Total Pages: 372
Release: 2006
Genre: Medical
ISBN: 9783039107858

Age is a complex cross-cutting notion for at least two reasons: the intricate interweaving of its biological and socio-cultural meanings and its dual significance as both a benchmark in an individual's life course and a foundation for social structure. This book offers new perspectives on age and ageing by combining achievements in the biological sciences and their different applications and interpretations in demography, anthropology, psychology and other pertinent disciplines. Thirty contributors from these various fields revisit the measures and the biological models of ageing, the borderline between normal and pathological ageing, the pertinence of chronological age as a benchmark along the life course, its interrelations with psychological development, with reproductive phases and other life events, the «normalizing» role ascribed by age classes and the risk of falling into ageism, the cross-cultural diversity and temporal changes of its meanings, the gender divide (real and perceived), as well as the rights that should be enjoyed at each age.

Biological Timekeeping: Clocks, Rhythms and Behaviour

Biological Timekeeping: Clocks, Rhythms and Behaviour
Author: Vinod Kumar
Publisher: Springer
Total Pages: 663
Release: 2017-02-15
Genre: Science
ISBN: 8132236882

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.

Peak Human Clock

Peak Human Clock
Author: Said Hasyim
Publisher:
Total Pages: 142
Release: 2020-11-28
Genre: Health & Fitness
ISBN: 9789811803420

Circadian Rhythm is the natural, 24-hour body's clock, regulating all the body's organ clocks. By learning how to harness all the natural energies within our physical bodies, everyone can become healthier, more energetic, and productive

About Time

About Time
Author: David Rooney
Publisher: National Geographic Books
Total Pages: 0
Release: 2022-08-09
Genre: History
ISBN: 1324021950

One of Smithsonian Magazine's Ten Best History Books of 2021 A captivating, surprising history of timekeeping and how it has shaped our world. For thousands of years, people of all cultures have made and used clocks, from the city sundials of ancient Rome to the medieval water clocks of imperial China, hourglasses fomenting revolution in the Middle Ages, the Stock Exchange clock of Amsterdam in 1611, Enlightenment observatories in India, and the high-precision clocks circling the Earth on a fleet of GPS satellites that have been launched since 1978. Clocks have helped us navigate the world and build empires, and have even taken us to the brink of destruction. Elites have used them to wield power, make money, govern citizens, and control lives—and sometimes the people have used them to fight back. Through the stories of twelve clocks, About Time brings pivotal moments from the past vividly to life. Historian and lifelong clock enthusiast David Rooney takes us from the unveiling of al-Jazari’s castle clock in 1206, in present-day Turkey; to the Cape of Good Hope observatory at the southern tip of Africa, where nineteenth-century British government astronomers moved the gears of empire with a time ball and a gun; to the burial of a plutonium clock now sealed beneath a public park in Osaka, where it will keep time for 5,000 years. Rooney shows, through these artifacts, how time has been imagined, politicized, and weaponized over the centuries—and how it might bring peace. Ultimately, he writes, the technical history of horology is only the start of the story. A history of clocks is a history of civilization.

The Circadian Clock

The Circadian Clock
Author: Urs Albrecht
Publisher: Springer Science & Business Media
Total Pages: 306
Release: 2010-01-23
Genre: Science
ISBN: 1441912622

With the invitation to edit this volume, I wanted to take the opportunity to assemble reviews on different aspects of circadian clocks and rhythms. Although most c- tributions in this volume focus on mammalian circadian clocks, the historical int- duction and comparative clocks section illustrate the importance of various other organisms in deciphering the mechanisms and principles of circadian biology. Circadian rhythms have been studied for centuries, but only recently, a mole- lar understanding of this process has emerged. This has taken research on circadian clocks from mystic phenomenology to a mechanistic level; chains of molecular events can describe phenomena with remarkable accuracy. Nevertheless, current models of the functioning of circadian clocks are still rudimentary. This is not due to the faultiness of discovered mechanisms, but due to the lack of undiscovered processes involved in contributing to circadian rhythmicity. We know for example, that the general circadian mechanism is not regulated equally in all tissues of m- mals. Hence, a lot still needs to be discovered to get a full understanding of cir- dian rhythms at the systems level. In this respect, technology has advanced at high speed in the last years and provided us with data illustrating the sheer complexity of regulation of physiological processes in organisms. To handle this information, computer aided integration of the results is of utmost importance in order to d- cover novel concepts that ultimately need to be tested experimentally.

Biological Clocks, Rhythms, and Oscillations

Biological Clocks, Rhythms, and Oscillations
Author: Daniel B. Forger
Publisher: MIT Press
Total Pages: 369
Release: 2024-08-06
Genre: Science
ISBN: 0262552817

An introduction to the mathematical, computational, and analytical techniques used for modeling biological rhythms, presenting tools from many disciplines and example applications. All areas of biology and medicine contain rhythms, and these behaviors are best understood through mathematical tools and techniques. This book offers a survey of mathematical, computational, and analytical techniques used for modeling biological rhythms, gathering these methods for the first time in one volume. Drawing on material from such disciplines as mathematical biology, nonlinear dynamics, physics, statistics, and engineering, it presents practical advice and techniques for studying biological rhythms, with a common language. The chapters proceed with increasing mathematical abstraction. Part I, on models, highlights the implicit assumptions and common pitfalls of modeling, and is accessible to readers with basic knowledge of differential equations and linear algebra. Part II, on behaviors, focuses on simpler models, describing common properties of biological rhythms that range from the firing properties of squid giant axon to human circadian rhythms. Part III, on mathematical techniques, guides readers who have specific models or goals in mind. Sections on “frontiers” present the latest research; “theory” sections present interesting mathematical results using more accessible approaches than can be found elsewhere. Each chapter offers exercises. Commented MATLAB code is provided to help readers get practical experience. The book, by an expert in the field, can be used as a textbook for undergraduate courses in mathematical biology or graduate courses in modeling biological rhythms and as a reference for researchers.

The Timing of Biological Clocks

The Timing of Biological Clocks
Author: Arthur T. Winfree
Publisher: Macmillan
Total Pages: 219
Release: 1987
Genre: Science
ISBN: 071675018X

Explores the many aspects of circadian rhythms, from jet lag to biorhythms to "forbidden phases" of sleep when one cannot awaken spontaneously.

Circadian Clocks

Circadian Clocks
Author: Joseph S. Takahashi
Publisher: Springer Science & Business Media
Total Pages: 776
Release: 2012-12-06
Genre: Medical
ISBN: 1461512018

The Handbook of Behavioral Neurobiology series deals with the aspects of neurosciences that have the most direct and immediate bearing on behavior. It presents the most current research available in the specific areas of sensory modalities. This volume explores circadian rhythms.

Sleep and Clocks in Aging and Longevity

Sleep and Clocks in Aging and Longevity
Author: Anita Jagota
Publisher: Springer Nature
Total Pages: 553
Release: 2023-03-06
Genre: Family & Relationships
ISBN: 303122468X

This edited volume focuses on the interplay between sleep and circadian rhythms with health, aging and longevity. Sleep is absolutely important for human health and survival, as insufficient sleep is associated with a plethora of conditions, including the poor quality of life, onset of several diseases, and premature death. The sleep–wake cycle is an evolutionary conserved neurobiological phenomenon, and is a prominent manifestation of the biological clocks localised in the suprachiasmatic nucleus (SCN). Understanding bidirectional relationship between sleep and circadian rhythms is of utmost importance and urgency, especially in the context of modern lifestyle where sleep is often out of phase with the internal body clocks, social jetlag, artificial lights and so on. The 25 chapters by leading researchers and experts from 11 countries are arranged into seven sections: understanding sleep and clock interlink in health and longevity; sleep, aging and longevity; clock, aging and longevity; melatonin, sleep and clock; genetic regulation of sleep and clock; therapeutic interventions in sleep disorders and clock misalignment; and experimental models to study sleep and clocks in aging and longevity. This book is useful for advanced undergraduate and graduate students, and researchers, educators, and other biomedical professionals.

Circadian Clocks

Circadian Clocks
Author: Tsuyoshi Hirota
Publisher: Springer Nature
Total Pages: 432
Release: 2022-09-15
Genre: Medical
ISBN: 1071625772

This volume provides backgrounds, methods, and troubleshooting for the analysis of circadian rhythms at the molecular, cellular, and organismal levels in vertebrates and invertebrates, and also covers light input, sleep, circalunar rhythms, and seasonal rhythms. The chapters in this book discuss behavioral and biological testing, histochemistry, single-cell imaging, electrophysiology, photochemistry, genetics, genomics, transcriptomics, proteomics, metabolomics, systems biology, chemical biology, and mathematical modeling. In the Neuromethods series style, chapters include experimental detail and key advice from the specialists needed to successfully carry out these methods in your laboratory. Cutting-edge and practical, Circadian Clocks is a valuable resource for all researchers seeking to learn about established and novel methods in chronobiology, and the molecular mechanisms of the rhythmic control of physiology and behavior.