The Effects Of Hypergravity And Microgravity On Biomedical Experiments

Autore: Thais Russomano
Editore: Morgan & Claypool Publishers
ISBN: 1598295780
Grandezza: 76,35 MB
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Vista: 417
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Take one elephant and one man to the top of a tower and simultaneously drop. Which will hit the ground first?You are a pilot of a jet fighter performing a high-speed loop. Will you pass out during the maneuver?How can you simulate being an astronaut with your feet still firmly placed on planet Earth?In the aerospace environment, human, animal, and plant physiology differs significantly from that on Earth, and this book provides reasons for some of these changes. The challenges encountered by pilots in their missions can have implications on the health and safety of not only themselves but others. Knowing the effects of hypergravity on the human body during high-speed flight led to the development of human centrifuges. We also need to better understand the physiological responses of living organisms in space. It is therefore necessary to simulate weightlessness through the use of specially adapted equipment, such as clinostats, tilt tables, and body suspension devices.Each of these ideas, and more, is addressed in this review of the physical concepts related to space flights, microgravity, and hypergravity simulations. Basic theories, such as Newton’s law and Einstein’s principle are explained, followed by a look at the biomedical effects of experiments performed in space life sciences institutes, universities, and space agencies.Table of Contents: General Concepts in Physics - Definition of Physical Terms / The Effects of Hypergravity on Biomedical Experiments / The Effects of Microgravity on Biomedical Experiments / References

Neural Interfacing

Autore: Thomas D. Coates, Jr.
Editore: Morgan & Claypool Publishers
ISBN: 1598296817
Grandezza: 36,94 MB
Formato: PDF, ePub
Vista: 3701
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In the past 50 years there has been an explosion of interest in the development of technologies whose end goal is to connect the human brain and/or nervous system directly to computers. Once the subject of science fiction, the technologies necessary to accomplish this goal are rapidly becoming reality. In laboratories around the globe, research is being undertaken to restore function to the physically disabled, to replace areas of the brain damaged by disease or trauma and to augment human abilities. Building neural interfaces and neuro-prosthetics relies on a diverse array of disciplines such as neuroscience, engineering, medicine and microfabrication just to name a few. This book presents a short history of neural interfacing (N.I.) research and introduces the reader to some of the current efforts to develop neural prostheses. The book is intended as an introduction for the college freshman or others wishing to learn more about the field. A resource guide is included for students along with a list of laboratories conducting N.I. research and universities with N.I. related tracks of study. Table of Contents: Neural Interfaces Past and Present / Current Neuroprosthesis Research / Conclusion / Resources for Students

Understanding Atrial Fibrillation

Autore: Luca Mainardi
Editore: Morgan & Claypool Publishers
ISBN: 1598298372
Grandezza: 65,18 MB
Formato: PDF, ePub, Mobi
Vista: 9338
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The book presents recent advances in signal processing techniques for modeling, analysis, and understanding of the heart's electrical activity during atrial fibrillation. This arrhythmia is the most commonly encountered in clinical practice and its complex and metamorphic nature represents a challenging problem for clinicians, engineers, and scientists. Research on atrial fibrillation has stimulated the development of a wide range of signal processing tools to better understand the mechanisms ruling its initiation, maintenance, and termination. This book provides undergraduate and graduate students, as well as researchers and practicing engineers, with an overview of techniques, including time domain techniques for atrial wave extraction, time-frequency analysis for exploring wave dynamics, and nonlinear techniques to characterize the ventricular response and the organization of atrial activity. The book includes an introductory chapter about atrial fibrillation and its mechanisms, treatment, and management. The successive chapters are dedicated to the analysis of atrial signals recorded on the body surface and to the quantification of ventricular response. The rest of the book explores techniques to characterize endo- and epicardial recordings and to model atrial conduction. Under the appearance of being a monothematic book on atrial fibrillation, the reader will not only recognize common problems of biomedical signal processing but also discover that analysis of atrial fibrillation is a unique challenge for developing and testing novel signal processing tools.

Quantitative Neurophysiology

Autore: Joseph V. Tranquillo
Editore: Morgan & Claypool Publishers
ISBN: 1598296752
Grandezza: 67,77 MB
Formato: PDF, ePub, Docs
Vista: 8980
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Quantitative Neurophysiology is supplementary text for a junior or senior level course in neuroengineering. It may also serve as an quick-start for graduate students in engineering, physics or neuroscience as well as for faculty interested in becoming familiar with the basics of quantitative neuroscience. The first chapter is a review of the structure of the neuron and anatomy of the brain. Chapters 2-6 derive the theory of active and passive membranes, electrical propagation in axons and dendrites and the dynamics of the synapse. Chapter 7 is an introduction to modeling networks of neurons and artificial neural networks. Chapter 8 and 9 address the recording and decoding of extracellular potentials. The final chapter has descriptions of a number of more advanced or new topics in neuroengineering. Throughout the text, vocabulary is introduced which will enable students to read more advanced literature and communicate with other scientists and engineers working in the neurosciences. Numerical methods are outlined so students with programming knowledge can implement the models presented in the text. Analogies are used to clarify topics and reinforce key concepts. Finally, homework and simulation problems are available at the end of each chapter.

An Outline Of Informational Genetics

Autore: Gerard Battail
Editore: Morgan & Claypool Publishers
ISBN: 1598298291
Grandezza: 26,57 MB
Formato: PDF, ePub, Docs
Vista: 3982
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Heredity performs literal communication of immensely long genomes through immensely long time intervals. Genomes nevertheless incur sporadic errors referred to as mutations which have significant and often dramatic effects, after a time interval as short as a human life. How can faithfulness at a very large timescale and unfaithfulness at a very short one be conciliated? The engineering problem of literal communication has been completely solved during the second half of the XX-th century. Originating in 1948 from Claude Shannon's seminal work, information theory provided means to measure information quantities and proved that communication is possible through an unreliable channel (by means left unspecified) up to a sharp limit referred to as its capacity, beyond which communication becomes impossible. The quest for engineering means of reliable communication, named error-correcting codes, did not succeed in closely approaching capacity until 1993 when Claude Berrou and Alain Glavieux invented turbocodes. By now, the electronic devices which invaded our daily lives (e.g., CD, DVD, mobile phone, digital television) could not work without highly efficient error-correcting codes. Reliable communication through unreliable channels up to the limit of what is theoretically possible has become a practical reality: an outstanding achievement, however little publicized. As an engineering problem that nature solved aeons ago, heredity is relevant to information theory. The capacity of DNA is easily shown to vanish exponentially fast, which entails that error-correcting codes must be used to regenerate genomes so as to faithfully transmit the hereditary message. Moreover, assuming that such codes exist explains basic and conspicuous features of the living world, e.g., the existence of discrete species and their hierarchical taxonomy, the necessity of successive generations and even the trend of evolution towards increasingly complex beings. Providing geneticists with an introduction to information theory and error-correcting codes as necessary tools of hereditary communication is the primary goal of this book. Some biological consequences of their use are also discussed, and guesses about hypothesized genomic codes are presented. Another goal is prompting communication engineers to get interested in genetics and biology, thereby broadening their horizon far beyond the technological field, and learning from the most outstanding engineer: Nature. Table of Contents: Foreword / Introduction / A Brief Overview of Molecular Genetics / An Overview of Information Theory / More on Molecular Genetics / More on Information Theory / An Outline of Error-Correcting Codes / DNA is an Ephemeral Memory / A Toy Living World / Subsidiary Hypothesis, Nested System / Soft Codes / Biological Reality Conforms to the Hypotheses / Identification of Genomic Codes / Conclusion and Perspectives

Encyclopedia Of Biomedical Engineering

Autore:
Editore: Elsevier
ISBN: 0128051442
Grandezza: 50,83 MB
Formato: PDF, Kindle
Vista: 9712
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Encyclopedia of Biomedical Engineering is a unique source for rapidly evolving updates on topics that are at the interface of the biological sciences and engineering. Biomaterials, biomedical devices and techniques play a significant role in improving the quality of health care in the developed world. The book covers an extensive range of topics related to biomedical engineering, including biomaterials, sensors, medical devices, imaging modalities and imaging processing. In addition, applications of biomedical engineering, advances in cardiology, drug delivery, gene therapy, orthopedics, ophthalmology, sensing and tissue engineering are explored. This important reference work serves many groups working at the interface of the biological sciences and engineering, including engineering students, biological science students, clinicians, and industrial researchers. Provides students with a concise description of the technologies at the interface of the biological sciences and engineering Covers all aspects of biomedical engineering, also incorporating perspectives from experts working within the domains of biomedicine, medical engineering, biology, chemistry, physics, electrical engineering, and more Contains reputable, multidisciplinary content from domain experts Presents a ‘one-stop’ resource for access to information written by world-leading scholars in the field

Gravitational Biology I

Autore: Markus Braun
Editore: Springer
ISBN: 3319938940
Grandezza: 11,31 MB
Formato: PDF, ePub, Docs
Vista: 4129
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This book summarizes what is currently known about gravity sensing and response mechanisms in microorganisms, fungi, lower and higher plants; starting from the historical eye-opening experiments from the 19th century up to today’s extremely rapid advancing cellular, molecular and biotechnological research. All forms of life are constantly exposed to gravity and it can be assumed that almost all organisms have developed sensors and respond in one way or the other to the unidirectional acceleration force,this books shows us some of these different ways. The book is written for plant biologists and microbiologists as well as scientists interested in space and gravitational biology.

Sourcebook Of Models For Biomedical Research

Autore: P. Michael Conn
Editore: Springer Science & Business Media
ISBN: 1588299333
Grandezza: 74,83 MB
Formato: PDF
Vista: 6745
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The collection of systems represented in this volume is a unique effort to reflect the diversity and utility of models used in biomedicine. That utility is based on the consideration that observations made in particular organisms will provide insight into the workings of other, more complex systems. This volume is therefore a comprehensive and extensive collection of these important medical parallels.

Biomedical Research Studies In Acceleration Impact Weightlessness Vibration And Emergency Escape And Restraint Systems

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ISBN:
Grandezza: 70,38 MB
Formato: PDF, ePub
Vista: 4377
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Biomedical Research Division Significant Accomplishments For Fy 1983

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ISBN:
Grandezza: 54,28 MB
Formato: PDF, Mobi
Vista: 7913
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Proceedings Of The European Symposium On Life Sciences Research In Space

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Editore:
ISBN:
Grandezza: 55,62 MB
Formato: PDF, Docs
Vista: 2364
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Aerospace Medicine And Biology

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Editore:
ISBN:
Grandezza: 56,77 MB
Formato: PDF, Kindle
Vista: 1468
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A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).

Proceedings Of The Fourth European Symposium On Life Sciences Research In Space Trieste Italy 28 May 1 June 1990

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ISBN:
Grandezza: 14,37 MB
Formato: PDF
Vista: 1306
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International Aerospace Abstracts

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ISBN:
Grandezza: 61,81 MB
Formato: PDF
Vista: 9667
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Environmental Physiology

Autore: American Physiological Society (1887- )
Editore: Amer Physiological Society
ISBN: 9780195074925
Grandezza: 74,60 MB
Formato: PDF, ePub, Mobi
Vista: 4507
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Thirty years have passed since the last edition of this volume was published. Since then, many advances have occurred in the field of environmental physiology. Established areas of research have been expanded by the application of new concepts and the use of more modern tools, while other areas, then in their infancy, have developed into important subjects of current research. The latter include, for example, research in the physiological adaptations and acclimations to underwater and space environments, to microorganisms responsible for acute inflammatory diseases, and to psychosocial stress. All of the chapters in this book were written by international investigators noted for their individual contributions to the areas that they cover. The focus of their presentations addresses the regulatory mechanisms of the physiological responses to the many factors constituting the external environment. Each contribution has been subjected to a rigorous review process in order to ensure its relevance and timeliness. At the same time, innovative and even controversial interpretations were not rejected, so that the material in this volume represents the most up-to-date understanding of, and debate over, the physiological adaptation to the environment.

Environmental Physiology

Autore: Melvin J. Fregly
Editore:
ISBN:
Grandezza: 72,42 MB
Formato: PDF, Mobi
Vista: 6334
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