Fertilization Mechanisms in Man and Mammals

Fertilization Mechanisms in Man and Mammals

Author: Ralph Gwatkin

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 163

ISBN-13: 1461588049

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Fertilization in mammals normally occUrs within the oviduct, where it is relatively inaccessible to study. However, as a result of painstaking research, most of it carried out over the last five years, this barrier to experimentation has been largely overcome by the development of in vitro fertilization techniques for at least 11 different species, including man. The result has been a rapid increase in our knowledge of the physiological and bio chemical mechanisms involved in the fertilization process. The aim of this book, which is an extension of my recent review of cell surface interactions in fertilization (Gwatkin, 1976), is to present a brief, but well documented, account of the new knowledge that has been attained. Although this book deals with mammalian fertilization mechanisms, I have included some recent experiments on am phibian and invertebrate gametes to supplement the mammalian picture. This information is particularly valuable as the rela tively large number of eggs available from these lower forms has advanced our knowledge of certain fertilization mechanisms beyond what is known in mammals. However, in the interest of brevity, I have omitted details of morphology and minor varia tions between species. For these, and other aspects not covered here, the reader is referred to the books of Austin (1965, 1968), vii viii PREFACE Austin and Short (1972), Metz and Monroy (1969), Monroy (1965), Lord Rothschild (1956a), and Zamboni (l971a).


The Mechanism Of Life

The Mechanism Of Life

Author: Stephane Leduc

Publisher:

Published: 2024-02-14

Total Pages: 0

ISBN-13: 9781835914144

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"The Mechanism of Life" is a groundbreaking work by the French physiologist and biochemist Stéphane Leduc, originally published in 1911 under the title "La Biologie Synthétique." In this influential book, Leduc explores the idea of a mechanistic approach to understanding the fundamental processes of life, challenging traditional biological perspectives of his time. Leduc was a proponent of the concept that living organisms could be understood through principles of physics and chemistry, akin to a machine. He proposed that life processes could be explained through the physical and chemical interactions of living matter. Leduc's work was particularly notable for its attempt to synthesize life-like phenomena in the laboratory, using chemical substances to create structures resembling cells and even imitating some aspects of cellular functions. One of the key concepts in "The Mechanism of Life" is the idea of osmotic phenomena, wherein Leduc explored the role of osmosis in cellular processes. He conducted experiments involving the formation of artificial cells, referred to as "osmotic growths," by encapsulating various substances in semi-permeable membranes. Leduc's work was met with both acclaim and criticism. While some praised his innovative thinking and experimental techniques, others were skeptical of his mechanistic approach to understanding the complexity of living organisms. Over time, some of Leduc's ideas fell out of favor as the field of biology evolved, embracing more nuanced and holistic approaches to studying life. Despite its eventual historical context, "The Mechanism of Life" remains an important work in the history of biology, as it reflects an early attempt to bridge the gap between physics, chemistry, and the intricacies of living organisms. The book provides valuable insights into the scientific thinking of its time and the evolving understanding of life processes.


Beyond Mechanism

Beyond Mechanism

Author: Brian G. Henning

Publisher: Lexington Books

Published: 2013-02-01

Total Pages: 488

ISBN-13: 0739174371

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It has been said that new discoveries and developments in the human, social, and natural sciences hang “in the air” (Bowler, 1983; 2008) prior to their consummation. While neo-Darwinist biology has been powerfully served by its mechanistic metaphysic and a reductionist methodology in which living organisms are considered machines, many of the chapters in this volume place this paradigm into question. Pairing scientists and philosophers together, this volume explores what might be termed “the New Frontiers” of biology, namely contemporary areas of research that appear to call an updating, a supplementation, or a relaxation of some of the main tenets of the Modern Synthesis. Such areas of investigation include: Emergence Theory, Systems Biology, Biosemiotics, Homeostasis, Symbiogenesis, Niche Construction, the Theory of Organic Selection (also known as “the Baldwin Effect”), Self-Organization and Teleodynamics, as well as Epigenetics. Most of the chapters in this book offer critical reflections on the neo-Darwinist outlook and work to promote a novel synthesis that is open to a greater degree of inclusivity as well as to a more holistic orientation in the biological sciences.


Regulation of Tissue Oxygenation, Second Edition

Regulation of Tissue Oxygenation, Second Edition

Author: Roland N. Pittman

Publisher: Biota Publishing

Published: 2016-08-18

Total Pages: 117

ISBN-13: 1615047212

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This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.


Cognitive Mechanism and Evaluation Method of Human-Machine Interaction in Intelligent Vehicle Cockpit

Cognitive Mechanism and Evaluation Method of Human-Machine Interaction in Intelligent Vehicle Cockpit

Author: Zhenwei You

Publisher: Scientific Research Publishing, Inc. USA

Published: 2023-08-15

Total Pages: 194

ISBN-13: 164997681X

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The automotive industry is experiencing a significant technological shift, driven by electrification, connectivity, intelligence, sharing, and the trend towards “software-defined cars.” With this transformation, the traditional car cabin is evolving into a digital, intelligent, and mobile smart terminal that prioritizes passenger-centric design and data fusion. The design of in-car interaction has become essential in creating engaging, emotional, and humanized user experiences. Future success for traditional car manufacturers lies in developing effective communication methods and context for the intelligent car cabin while addressing relevant issues.


The World's Construction Mechanism

The World's Construction Mechanism

Author: Jacques Barnouin

Publisher: John Wiley & Sons

Published: 2020-04-28

Total Pages: 308

ISBN-13: 1786305151

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The interdisciplinarity between the biological and human sciences is here to serve a daring objective: to decipher, by means of a logical chain, the explanatory factors of human trajectories and imbalances between societies and nations. To do this, The World’s Construction Mechanism is based on an unprecedented analysis of the dynamics of the human species, combining the contributions of anthropology, archeology, biology, climatology, economics, geography, history and sociology. This book analyzes the roots of societal disharmony and presents ways of realizing a clear-sighted human project that is in step with the general interest of humanity.


Advances in Mechanism and Machine Science

Advances in Mechanism and Machine Science

Author: Tadeusz Uhl

Publisher: Springer

Published: 2019-06-13

Total Pages: 4203

ISBN-13: 3030201317

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This book gathers the proceedings of the 15th IFToMM World Congress, which was held in Krakow, Poland, from June 30 to July 4, 2019. Having been organized every four years since 1965, the Congress represents the world’s largest scientific event on mechanism and machine science (MMS). The contributions cover an extremely diverse range of topics, including biomechanical engineering, computational kinematics, design methodologies, dynamics of machinery, multibody dynamics, gearing and transmissions, history of MMS, linkage and mechanical controls, robotics and mechatronics, micro-mechanisms, reliability of machines and mechanisms, rotor dynamics, standardization of terminology, sustainable energy systems, transportation machinery, tribology and vibration. Selected by means of a rigorous international peer-review process, they highlight numerous exciting advances and ideas that will spur novel research directions and foster new multidisciplinary collaborations.