The Sodium Theory Revisited
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| Author | : Yves Pichon |
| Publisher | : Xlibris Corporation |
| Total Pages | : 101 |
| Release | : 2013-03 |
| Genre | : Biography & Autobiography |
| ISBN | : 1479793701 |
The sodium theory revisited (45 years of a full time CNRS neurophysiologist). The sodium theory has been elegantly proposed by Hodkin, Huxley and Katz in the early fifties, after their experiments on Plymouth squids, to account for the role of sodium and potassium ions in nerve activity. Since then, the electrophysiological techniques and the data acquisition techniques have known an amazing development. In this short paper, Yves Pichon wants to give an account of what happened since then in different laboratories (mostly marine) with a variety invertebrate species and mostly insects. One of the most important technical development has been the use of single cockroach axons which have been found to behave very much like squid axons. Another, almost simultaneous development which revealed extremely useful for the understanding of the nerve function was "in situ" microelectrode recording which enables an indirect analysis of the extraaxonal environement. Experiments on several species indicate that the CNS is protected from the ionic environment by a blood-brain barrier. On the other hand, quite unexpectedly, little ion accumation is detected in the vicinity of the axonal membrane in physiological conditions. Another innovating technique was the 'patch-clamp' technique which enables the recording of the activity of individual ionic channels in cultured neurones. The last chapter of this report is devoted to different mechansims leading to repetitive activity through modificatrion of the sodium and potassium axonal conductances.
| Author | : Michel Janssen |
| Publisher | : Oxford University Press |
| Total Pages | : 817 |
| Release | : 2023-08-15 |
| Genre | : Science |
| ISBN | : 0198883919 |
This is the second of two volumes on the genesis of quantum mechanics in the first quarter of the 20th century. It covers the period 1923-1927. After covering some of the difficulties the old quantum theory had run into by the early 1920s as well as the discovery of the exclusion principle and electron spin, it traces the emergence of two forms of the new quantum mechanics, matrix mechanics and wave mechanics, in the years 1923-27. It then shows how the new theory took care of some of the failures of the old theory and put its successes on a more solid basis. Finally, it shows how in 1927 the two forms of the new theory were unified, first through statistical transformation theory, then through the Hilbert space formalism. This volume provides a detailed analysis of the classic papers by Heisenberg, Born, Jordan, Dirac, De Broglie, Einstein, Schrödinger, von Neumann and other authors. Drawing on the correspondence of these and other physicists, their later reminiscences and the extensive secondary literature on the “quantum revolution”, this volume places these papers in the context of the discussions out of which modern quantum mechanics emerged. It argues that the genesis of modern quantum mechanics can be seen as the construction of an arch on a scaffold provided by the old quantum theory, discarded once the arch could support itself.
| Author | : Robert E. Johnson |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 235 |
| Release | : 2013-03-13 |
| Genre | : Science |
| ISBN | : 3642483755 |
On attending a conference on the Jovian satellites at UCLA, I heard Lou Lanze rotti vigorously present the exciting data on the sputtering of water ice by Me V protons taken with W. L. Brown at AT&T Bell Labs. In his inimitable way he made clear that this new electronic sputtering process was very poorly under stood and was very important for surface properties of sattelites. I was immedia tely hooked, and have been working ever since with Lanzerotti, Brown, my col league at Virginia, John Boring, and Bo Sundqvist at Uppsala on understanding the ejection of material from surfaces and applying laboratory results to intere sting planetary problems. In the course of writing this book I also had the benefit of spending a semester with the Planetary Geosciences group in Hawaii, thanks to Tom McCord, a period of time with Doug Nash at JPL, and a period ot time with the group at Catania. The book was started with the encouragement of Lou Lanzerotti. The writing has gone slowly as the field has been changing rapidly. Even now I feel it is incom plete, as the interesting Halley dust data have just recently been interpreted in detail, Voyager has recently visited Neptune, and the data on Pluto are rapidly improving. However, most of the principles for plasma ion alteration of surfaces and gases have been established allowing, I hope, a coherent and useful frame work for incorporating both new laboratory and planetary data.
| Author | : Akhlaq A. Farooqui |
| Publisher | : Springer |
| Total Pages | : 325 |
| Release | : 2015-03-25 |
| Genre | : Medical |
| ISBN | : 3319152548 |
The purpose of this monograph is to present readers with a comprehensive and cutting edge description of neurochemical effects of diet (beneficial and harmful effects) in normal human brain and to discuss how present day diet promotes pathogenesis of stroke, AD, PD, and depression in a manner that is useful not only to students and teachers but also to researchers, dietitians, nutritionists and physicians. A diet in sufficient amount and appropriate macronutrients is essential for optimal health of human body tissues. In brain, over-nutrition, particularly with high-calorie diet, not only alters cellular homeostasis, but also results in changes in the intensity of signal transduction processes in reward centers of the brain resulting in food addiction. Over-nutrition produces detrimental effects on human health in general and brain health in particular because it chronically increases the systemic and brain inflammation and oxidative stress along with induction of insulin resistance and leptin resistance in the brain as well as visceral organs. Onset of chronic inflammation and oxidative stress not only leads to obesity and heart disease, but also promotes type II diabetes and metabolic syndrome, which are risk factors for both acute neural trauma (stroke) and chronic age-related neurodegenerative and neuropsychological disorders, such as Alzheimer disease (AD), Parkinson disease (PD) and depression.
| Author | : Alessandro Capucci |
| Publisher | : Springer |
| Total Pages | : 205 |
| Release | : 2018-11-01 |
| Genre | : Medical |
| ISBN | : 3319916777 |
This book elucidates a number of new concepts on P-wave evaluation and QRS depolarization properties, and reports on several repolarization findings never covered in previous ECG books. The content is primarily based on case reports, some of which are compared in order to reveal their ostensibly small but significant differences. The book addresses a significant and lingering gap in ECG interpretation, which is the actual cause of many poor decisions in the diagnostic and therapeutic contexts. Further, the book has an interdisciplinary appeal, and will be of equal interest to professionals and scholars with an interest in cardiology and ECG interpretation.
| Author | : Jay Schulkin |
| Publisher | : JHU Press |
| Total Pages | : 208 |
| Release | : 2020-03-03 |
| Genre | : Psychology |
| ISBN | : 1421429373 |
In the first half of the twentieth century, psychology was a discipline in search of scientific legitimacy. Debates raged over how much of human and animal behavior is instinctive and how much is learned, and how behavior could be quantified accurately. At the Johns Hopkins University's new Phipps Psychiatric Clinic, Curt P. Richter stood aside from these heated theoretical arguments, choosing instead to apply his data-collection methods, innovative measurement techniques, playful sense of exploration, and consummate surgical skill to laboratory examinations of the biological basis of behavior. From identifying the biological clocks that govern behavior and physiology to observing the self-regulation of nutrient levels by the body, the cyclical nature of some mental illnesses, and the causes of hopelessness, Richter's wide-ranging discoveries not only influenced the burgeoning field of psychobiology and paved the way for later researchers but also often had implications for the treatment of patients in the clinic. At the time of his death in 1988, Richter left behind a massive collection of laboratory data. For this book, Jay Schulkin mined six decades of Richter's archived research data, personal documents, and interviews to flesh out an engaging portrait of a "laboratory artisan" in the context of his work.
| Author | : S. Böhme |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 569 |
| Release | : 2013-11-11 |
| Genre | : Science |
| ISBN | : 3662122782 |
Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is de voted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. Volume 6 contains literature published in 1971 and received before March 15, 1972; some older liter ature which was received late and which is not recorded in earlier volumes is also included.
| Author | : Thomas Herdt |
| Publisher | : Elsevier Health Sciences |
| Total Pages | : 283 |
| Release | : 2013-07-28 |
| Genre | : Medical |
| ISBN | : 1455776173 |
A current, comprehensive issue on metabolic diseases for the food animal practitioner. Topics include obesity and insulin resistance in dairy cows, ketosis therapy, use of serum NEFA and BHBA concentrations in herd-level assessment, mineral nutrition in transition diets, protein, fat, and energy in dairy transition diets, prophylactic calcium therapy in peripartum dairy cows, metabolic regulators of feed intake, assessing and managing body condition score for the prevention of metabolic disease, and more!
| Author | : |
| Publisher | : ScholarlyEditions |
| Total Pages | : 347 |
| Release | : 2013-07-22 |
| Genre | : Medical |
| ISBN | : 1481657518 |
Cardiovascular Diseases: New Insights for the Healthcare Professional: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Diagnosis and Screening. The editors have built Cardiovascular Diseases: New Insights for the Healthcare Professional: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Diagnosis and Screening in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Cardiovascular Diseases: New Insights for the Healthcare Professional: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
| Author | : G. Neil Martin |
| Publisher | : Psychology Press |
| Total Pages | : 287 |
| Release | : 2013-06-19 |
| Genre | : Psychology |
| ISBN | : 1135090173 |
Smell and taste are our most misunderstood senses. Given a choice between losing our sense of smell and taste, or our senses of sight and hearing, most people nominate the former, rather than the latter. Yet our sense of smell and taste has the power to stir up memories, alter our mood and even influence our behaviour. In The Neuropsychology of Smell and Taste, Neil Martin provides a comprehensive, critical analysis of the role of the brain in gustation and olfaction. In his accessible and characteristic style he shows why our sense of smell and taste do not simply perform basic and intermittent functions, but lie at the very centre of our perception of the world around us. Through an exploration of the physiology, anatomy and neuropsychology of the senses; the neurophysiological causes of smell and taste disorders, and their function in physical and mental illness, Neil Martin provides an accessible and up-to-date overview of the processes of gustation and olfaction. The Neuropsychology of Smell and Taste provides a state-of-the-art overview of current research in olfactory and gustatory perception. With sections describing the effect of odour and taste on our behaviour, and evaluating the contribution current neuroimaging technology has made to our understanding of the senses, the book will be of interest to researchers and students of neuropsychology and neuroscience, and anybody with an interest in olfaction and gustation.
