Download or read book NIGHT RHYTHMS written by Elda Minger and published by Harlequin. This book was released on 2011-07-15 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: BLAZE Red-hot reads from Temptation! WAS IT LOVE…OR LUST? Just a simple high school reunion—that's all this visit home was supposed to be for Meg Prescott. Until lean and sexy Daniel Willett strolled into the bar. At 16, she'd had a secret crush on the rugged cowboy. At 21, Meg broke Daniel's heart when she took off for L.A. in search of a dream. Now Daniel was determined to make up for lost time. To hold his own sensual reunion with Meg. Lost in the heated rhythm of the night, together they explored their deepest fantasies…their hottest desires…their innermost secrets. But as the sun crept over the Colorado mountains, what would the morning bring? And would it last?
Download or read book Night Rhythms written by Phillip D. Cortez and published by . This book was released on 2011-08 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Night Rhythms takes young readers on a rhythmic journey of the world outside a young boy's bedroom window, as the tapping rain on his windowpane just can't let him get to sleep.
Download or read book Biological Rhythms written by Vinod Kumar and published by Springer Science & Business Media. This book was released on 2002-05-01 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Chapters 11 to 14) summarise important features of the biological clock at the level of whole animal covering all vertebrate classes (fish to mammal). Chapters 15 and 16 are on long term (seasonal) rhythms in plants and higher vertebrates. Short term rhythms (ultradian rhythms), the significance of having a clock system in animals living in extreme (arctic) environments, and the diversity of circadian responses to melatonin, the key endocrine element involved in regulation of biological rhythms, have been discussed in Chapters 17 to 19. Finally, a chapter on sensitivity to light of the photoperiodic clock is added which, using vertebrate examples, illustrates the importance of wavelength and intensity of light on circadian and non-circadian functions. A well-known expert writes each chapter. When presenting information, the text provides consistent thematic coverage and feeling for the methods of investigation. Reference citation within the body of the text adequately reflects the literature as subject is developed. A chapter begins with an abstract that enables a reader to know at the first glance the important points covered in that chapter. The chapter concludes with a full citation of references included in the text, which could be useful for further reading. The book ends with a comprehensive subject index that may be useful for quick searches.
Download or read book From Neurons to Neighborhoods written by National Research Council and published by National Academies Press. This book was released on 2000-11-13 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: How we raise young children is one of today's most highly personalized and sharply politicized issues, in part because each of us can claim some level of "expertise." The debate has intensified as discoveries about our development-in the womb and in the first months and years-have reached the popular media. How can we use our burgeoning knowledge to assure the well-being of all young children, for their own sake as well as for the sake of our nation? Drawing from new findings, this book presents important conclusions about nature-versus-nurture, the impact of being born into a working family, the effect of politics on programs for children, the costs and benefits of intervention, and other issues. The committee issues a series of challenges to decision makers regarding the quality of child care, issues of racial and ethnic diversity, the integration of children's cognitive and emotional development, and more. Authoritative yet accessible, From Neurons to Neighborhoods presents the evidence about "brain wiring" and how kids learn to speak, think, and regulate their behavior. It examines the effect of the climate-family, child care, community-within which the child grows.
Download or read book Light and Biological Rhythms in Man written by L. Wetterberg and published by Elsevier. This book was released on 2014-06-28 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume, current knowledge on light as a regulator of biological rhythms is considered from both basic science and clinical perspectives. Chapters by leading experts cover the whole range of biological rhythms, from infradian and circadian to the longer ultradian rhythms, in a wide variety of mammalian species. The chapters on humans provide a basis on which to establish mechanisms for mediating the therapeutic and physiologically beneficial effects of light as a regulator of rhythms in health and disease.
Download or read book Circadian Rhythms and Metabolism written by Etienne Challet and published by Frontiers Media SA. This book was released on 2017-09-18 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the major breakthroughs of the last decade in the understanding of energy homeostasis is the identification of a reciprocal control between circadian rhythmicity and cellular metabolism. Circadian rhythmicity is a fundamental endogenous process of almost every organism living on Earth. For instance, the alternation of hunger and satiety is not continuous over 24 h, but is instead structured in time along the light/dark cycle. In mammals, the temporal organization of metabolism, physiology and behavior around 24 h is controlled by a network of multiple cellular clocks, synchronized via neuronal and hormonal signals by a master clock located in the suprachiasmatic nuclei of the hypothalamus. This central circadian conductor in the brain is mainly reset by ambient light perceived by the retina, while secondary circadian clocks in other brain areas and peripheral organs can be reset by meal timing. Chronic disruption of circadian rhythms, as seen in human shift-workers (up to 20% of the active population), has been associated with the development of a number of adverse mental and metabolic conditions. Understanding of the functional links between circadian desynchronization and overall health in animal models and humans, however, is still scarce. Interactions between circadian clocks and metabolism can occur at different levels: the molecular clockwork, internal synchronization via neuro-hormonal signals, or external synchronization via photic or feeding cues. This Research Topic comprises a number of reviews as well as research and methods articles that feature recent advancements in the mechanisms linking circadian clocks with energy metabolism, and the pathophysiological implications of these interactions for metabolic health.
Download or read book Depression Manic depressive Illness and Biological Rhythms written by Eunice Luccock Corfman and published by . This book was released on 1979 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have known for some time of the pervasive presence of rhythmic variation in most of the processes of the body, and especially of those rhythms called "circadian," that is, showing a periodicity of about 24 hours. We have known less about the function and influence of these rhythms. Now accumulating lines of evidence from several sources suggest that circadian rhythms may be associated with the affective mental disorders-depression (unipolar) and manic depressive illness (bipolar). The hypothesis is proposed that these psychoses may be linked to biological rhythms which are out of phase with each other, or to failures in their synchronization with the external day-night cycle. That episodes of these illnesses are recurrent had been noticed anecdotally for many years but not persuasively documented until recently in studies such as those described here. The hypothesis is consistent with the finding of a high proportion of recurring episodes in patients with affective illnesses. Many of the findings reviewed here are from clinical data. If replicative and new investigations continue to support the conclusions suggested by these current findings, the implications for diagnosis, prevention, and treatment of these disorders are considerable. This Science Report bringing together these diverse sources of data helps us weigh and assess their significance. Such a Report also accomplishes the task of what is now sometimes called "technology transfer," a conscientious effort to ensure that the findings of research, funded by public money, are promptly disseminated to health professionals who may put those findings to use, and also to the interested general public in accessible form.
Download or read book Therapeutic Implications of Circadian Rhythms written by Guangrui Yang and published by Frontiers Media SA. This book was released on 2015-10-12 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Circadian rhythms are biological processes displaying endogenous and entrainable oscillations of about 24 hours. They are driven by a group of genes called clock genes that have been widely observed in plants, animals and even in bacteria. In mammals, the core clock genes are rhythmically expressed in both the suprachiasmatic nucleus (SCN), the master clock residing in the hypothalamus, and almost all peripheral tissues where they control numerous target genes in a circadian manner, and thus affect many physiological and biochemical processes. Evidence suggests that disruption of the circadian rhythms (or desynchronization) is a significant risk factor for the development of metabolic diseases, cardiovascular diseases, cancer and sleep disorders. Evidence also suggests that the disruption suppresses immune function and increases vulnerability to infectious diseases. Restoring or strengthening the circadian rhythm may be therapeutic for these conditions. This becomes exceptionally important in modern societies because many people are suffering from frequent desynchronization due to shift working, exposure to artificial light, travel by transmeridian air flight, and involvement in social activities. Besides, the temporal variations in the incidence and severity of many diseases, such as the onset of cardiovascular events, chronic obstructive pulmonary disease (COPD), inflammatory diseases and mental disorders have also drawn increasing attention to the circadian clock. The circadian rhythms affect not only the health status, but also the drug efficiency. The effects (and side effects) of many drugs vary with biological timing. The tolerance of many medications displays circadian variation as well. The timing of medical treatment in coordination with the body clock may significantly increase the desired effects of drugs, and lower the dose and toxicity. In addition, circadian rhythms can also be modulated by some therapeutic drugs, for example, melatonin and modafinil, which are used to treat circadian rhythm sleep disorders. In this Research Topic, we assemble a series of critical review and research articles that focus on the therapeutic implications of circadian rhythms. Topics include, but are not limited to: • Circadian disruption caused diseases or disorders and related intervention • Temporal manifestation of diseases or disorders and therapeutic implications • The effects of circadian rhythms on drugs • The effects of drugs on circadian rhythms
Download or read book Circadian Rhythms written by Russell G. Foster and published by Oxford University Press. This book was released on 2017 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Rhythms in Physiological Systems written by Hermann Haken and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhythms are a basic phenomenon in all physiological systems. They cover an enormous range of frequencies with periods from the order of milliseconds up to some years. They are described by many disciplines and are investigated usually in the context of the physiology of the respective function or organ. The importance given to the research on rhythmicity is quite different in different systems. In some cases where the functional significance is obvious rhythms are at the center of interest, as in the case of respiration or locomotion. In other fields they are considered more or less as interesting epiphenomena or at best as indicators without essential functional significance, as in the case of cardiovascular or EEG rhythms. Recently the study of physiological rhythms has attracted growing interest in several fields, especially with respect to rhythm research in humans and its rapidly spreading applications in basic behavioral research, and as a diagnostic tool in clinical medicine. This development was favored by two methodological and conceptual ad vances: on the one hand, the availability of non-invasive methods of continu ous recording of physiological parameters and their computer-assisted evaluation, and on the other, the rapid development of theoretical analyses, for example, the understanding of dynamic systems, the generation of coordinated macroscopic pro cesses in systems comprising many single elements, and the mathematical tools for treating nonlinear oscillators and their mutual coupling.
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.
Download or read book Physiology and Pharmacology of Biological Rhythms written by Peter H. Redfern and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measured by any criteria, research in chronobiology in general and chronopharmacology in particular has expanded rapidly in recent years. This expansion has been paralleled by an increasing recognition by those outside the field of the relevance and significance of recent developments in chronobiology. Advances in two areas have been chiefly responsible. First, application of the full range of modern techniques in behavioral, neurochemical, and molecular biology have greatly improved our understanding of basic clock mechanisms. In several species the genetic basis of the circadian clock is being progressively delineated. A complete picture of the neurochemical and neuroanatomical structure of the mammalian clock is emerging and the complex pattern of control mechanisms involving endogenous clock mechan isms and photic and nonphotic zeitgebers is being built up as a result of behavioral studies. Secondly, in parallel with these exciting developments in basic science, clinical applications are being convincingly demonstrated in the general fields of pharmacology and medicine as well as in specific areas, e.g., jet lag, shiftwork maladaption syndrome, blindness, and cardiovascular system. It is therefore an opportune time to review progress in the field of chronopharmacology and to introduce some of the exciting developments and prospects to a readership beyond the confines of the chronobiological cognoscenti. This volume is therefore aimed primarily at the pharmacologist - whether basic, applied, or clinical-who is not a specialist in chronobiology.
Download or read book Sleep and Circadian Rhythms in the ICU An Issue of Critical Care Clinics written by Vipin Malik and published by Elsevier Health Sciences. This book was released on 2015-10-21 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue provideds a comprehensive update to Sleep Medicine in the Intensive Care Unit, with editor Vipin Malik assembling a line-up of key topics such as:Sleep Neurobiology and Critical Care Illness,Obesity Hypoventilation Syndrome and Respiratory Failure,Obstructive Sleep Apnea,Non-Invasive Ventilation in Critically Ill Patients,Restless Leg Syndrome,Sleep and Endocrine System,Congestive Heart Failure and Central Sleep Apnea,Circadian Dysrhythmias,Neuromuscular Disorders and Sleep in Critically Ill Patients, Perioperative Issues and Sleep Disordered Breathing, Seizures, and more!
Download or read book Science of Circadian Rhythms An Issue of Sleep Medicine Clinics E Book written by Phyllis C. Zee and published by Elsevier Health Sciences. This book was released on 2016-01-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Phyllis Zee has put together an expert panel of authors on the topic of the Science of Circadian Rhythms. Articles include: Neurobiology of Circadian Rhythm Regulation, Effect of Light and Melatonin and other Melatonin Receptor Agonists on Human Circadian Physiology, Consequences of Circadian Disruption on Cardiometabolic Health, Consequences Circadian Disruption on Neurologic and Psychiatric Health, Aging and Circadian Rhythms, Circadian and Homeostatic Regulation of Sleep and Performance, Circadian disruption in Psychiatric Disorders, and more!
Download or read book Rebecca Norris Webb Night Calls written by and published by . This book was released on 2021-01-19 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rebecca Norris Webb's meditation on fathers and daughters, one's first landscape, caretaking of the land and its inhabitants, and on history that divides us as much as heals us Rebecca Norris Webb (born 1956) first came across W. Eugene Smith's "Country Doctor," his famous Life magazine photo essay, while studying at the International Center of Photography in New York. She was immediately drawn to the subject of Smith's essay, Dr Ernest Ceriani, a Colorado country doctor who was just a few years older than her father. She wondered: How would a woman tell this story, especially if she happened to be the doctor's daughter? In light of this, for the past six years Norris Webb has retraced the route of her 99-year-old father's house calls through Rush County, Indiana, the rural county where they both were born. Following his work rhythms, she photographed often at night and in the early morning, when many people arrive into the world--her father delivered some one thousand babies--and when many people leave it. Accompanying the photographs, lyrical text pieces addressed to her father create a series of handwritten letters told at a slant.
Download or read book Circadian Rhythms written by United States. Federal Aviation Administration. Library Services Division and published by . This book was released on 1968 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Ecological factors; Psychological factors; Physiological factors -- body chemistry, respiration, alimentation, heart-rate, temperature and other somatic responses; Work-rest cycle; Long distance flights; Medical aspects; Animal and plant studies.
Download or read book The Redox State and Circadian Rhythms written by Thérèse Vanden Driessche and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the term redox covers an important number of chemical reactions, biochemists are more familiar with reactions involving the reactions mediated by electron transfer chains associated with respiration, the thiol-disulfide exchanges and the reactions occurring in the presence of free radicals. More recently, the importance of these reactions in the living world and in medicine has been recognized by biochemists, biologists, physiologists, physicians, etc. The importance of the subject in both fundamental and is reflected by the abundance of interesting reviews applied science concerning the subject (Cadenas, 1989, Del Maestro, 1991) and books (Dreosti, 1991; Rice-Evans and Burdon, 1994; Armstrong, 1994) The aim of this chapter is to describe basic reactions known with references to reviews covering special subjects related to redox reactions. Transformation of energy in living organisms is mediated by complex biological systems such as electron transfer chains where the succession of redox reactions provides energy to the organisms. Molecular oxygen or dioxygen is an essential molecule and is the terminal acceptor of electrons during respiration in eukaryotes. In these organisms, the electron transfer chain is located in the mitochondrial membranes and produces adenosine triphosphate (ATP). In anaerobes, the electron acceptor is C0 , S, sulphate or nitrate ions 2 instead of 02.
