Download or read book The Skull of Quadruped and Bipedal Vertebrates written by Djillali Hadjouis and published by John Wiley & Sons. This book was released on 2021-06-29 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book forms part of the set, Comparative Anatomy and Posture of Animal and Human, and focuses on the skulls of Quaternary mammals and of Man since the acquisition of upright posture. Although the vast majority of the quadruped fossil species have a balanced postural adaptation, with no asymmetries or maxillo-mandibular dysmorphoses, the Hominine species that has acquired this readjustment of the body as well as a bipedal adaptation to the ground, will experience a series of postural imbalances starting with malocclusion in the genus Homo. In order to arrive at this conclusion, the cranio-facial architectural biodynamics of several species of fossil and current mammals have been analyzed over three decades. In addition, hundreds of skulls of anatomically modern Hominids have been examined, highlighting their occlusal offsets, variations, anomalies and pathologies.
Download or read book The Skull of Quadruped and Bipedal Vertebrates written by Djillali Hadjouis and published by John Wiley & Sons. This book was released on 2021-06-02 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book forms part of the set, Comparative Anatomy and Posture of Animal and Human, and focuses on the skulls of Quaternary mammals and of Man since the acquisition of upright posture. Although the vast majority of the quadruped fossil species have a balanced postural adaptation, with no asymmetries or maxillo-mandibular dysmorphoses, the Hominine species that has acquired this readjustment of the body as well as a bipedal adaptation to the ground, will experience a series of postural imbalances starting with malocclusion in the genus Homo. In order to arrive at this conclusion, the cranio-facial architectural biodynamics of several species of fossil and current mammals have been analyzed over three decades. In addition, hundreds of skulls of anatomically modern Hominids have been examined, highlighting their occlusal offsets, variations, anomalies and pathologies.
Download or read book Asymptomatic Osseous Variations of the Postcranial Human Skeleton written by Emeline Verna and published by John Wiley & Sons. This book was released on 2023-07-26 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since ancient times, asymptomatic bone variations have been studied in many different disciplines. In radiology, for example, they enable the differentiation of the typical from the anomalous, but in biological anthropology they are especially useful in answering questions about humans and their diachronic and synchronic variability. This book provides an easily accessible presentation of the osseous variations of the postcranial skeleton (from the spine to the feet), which are sometimes poorly understood by the scientific community. These variations are examined one by one, with definitions, population frequencies and complete illustrations given for each. Asymptomatic Osseous Variations of the Postcranial Human Skeleton is intended as a comprehensive reference manual for further research on these types of skeletal variations.
Download or read book Embryogeny and Phylogeny of the Human Posture 2 written by Anne Dambricourt Malasse and published by John Wiley & Sons. This book was released on 2021-12-21 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The future of the human posture is in the spotlight. The 200-year-old locomotion paradigm can no longer resist the advancement of knowledge, yet 2,500 years of thinking on the place of verticalized human anatomy and its reflexive consciousness in the natural history of life and the Earth, is more relevant than ever. This book retraces these reflections from pre-Socratic philosophers, focusing on the link between verticality and the most complex and consciously reflexive nervous system on the top rung of the ladder of living beings. The origin of animated forms, or animals, was considered metaphysical until the 19th century but reflection on their inception, from fertilization, paved the way for mathematics of infinitesimal geometry and dynamics. The simian filiation was inconceivable until Jean-Baptiste de Lamarck bridged the gap in 1802 with the locomotion postulate to explain the transition from quadrupedal to bipedal posture, sustained by the hypothesis of inheritance of acquired characteristics. This doctrine was overturned in 1987 by the discovery of the embryonic origins of the straightening – specific dynamics linked to neurogenesis – confirming the natural place of human verticality and nervous system complexity with its psychomotor and cognitive consequences. Sapiens find themselves at the physical limit of the straightening while mechanisms of gametogenesis have never ceased in making neurogenesis exponentially more complex. Is the future exclusively terrestrial or does intrauterine hominization open up new perspectives for space exploration? Posturologists, occlusodontics, osteopaths, cognisciences – all anthropological sciences exposed to human verticality are concerned with this discovery, which allows Sapiens to face their natural destiny.
Download or read book Phyllotaxis and Symmetry in Angiosperms written by Jean-Paul Walch and published by John Wiley & Sons. This book was released on 2024-08-27 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symmetry and the causes of shifts in different types of symmetries in flowers follow specific patterns that are ruled by developmental and genetic factors. Using a unified system of phyllotaxic equations, we have modeled the molecular mechanisms and pressure forces that act in inflorescence and floral meristems, giving flowers their organ arrangement. In this book, we state general physical principles, whereby the symmetry of the perianth is derived from the symmetry of certain TCP gene expression. Thus, we define the interplay between the expression of CYC2-like genes and the phyllotactic mechanisms. This new evo-devo approach is applied to major groups of angiosperms with predominantly actinomorphic flowers (in which rare zygomorphy is positional) and groups with mainly bilaterally symmetrical flowers (in which zygomorphy is constitutional). It has thus allowed us to revisit the contributions of the great floral morphologists of the 20th and early 21st centuries.
Download or read book Inventory of Biodiversity Today written by Violaine Nicolas and published by John Wiley & Sons. This book was released on 2024-10-08 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biobanks in Healthcare written by Nicole Arrighi and published by John Wiley & Sons. This book was released on 2024-12-12 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biobanks ensuring the governance and management of biological resources have become essential entities. The development of biotechnologies, the increased prevalence of biological drugs and the identification of biomarkers associated with molecular classifications of tissue lesions make it essential to have organized access to human biological samples, which have become precious and rare. The digital era and the production of massive data that comes with it have rendered biobanks the guarantors of the reproducibility of experiments and of the overall quality of medical research. Biobanks in Healthcare explores the upheaval linked to the massive deployment of digital health and precision medicine. The future of health biology lies in the deployment of biobanks in fields that have yet to be explored, putting them at the forefront of this extraordinary 21st-century research adventure.
Download or read book Structures and Functions of Retroviral RNAs written by Philippe Fosse and published by John Wiley & Sons. This book was released on 2022-09-12 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: One family of viruses is responsible for the infection of many species of vertebrates. These are the retroviruses whose genomic RNA is used to support genetic information and ensures many essential functions that are required for the formation of an infectious viral particle. These functions depend on structures formed by the folding of the genomic RNA. Structures and Functions of Retroviral RNAs describes the formation of these structures and their specific interactions with nucleic acids and proteins. In light of recent advances in molecular virology, it provides an understanding of the various facets of the retroviral genome. It emphasizes in particular that the study of the structure–function relationship of retroviral RNAs is a driving force behind increased research into HIV-1, the main causal agent of AIDS. Indeed, one of the challenges of pharmacology lies in the exploitation of several targets which allow us to anticipate and stem the emergence of resistance to anti-HIV drugs. The book also presents structures and interactions that may be potential future targets in this regard.
Download or read book Concepts in Biology written by Marc Gilbert and published by John Wiley & Sons. This book was released on 2023-10-10 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive review of the history of concepts of the endocrine, nervous and immune systems throughout the last century. Historically, these systems were long considered as compartments that performed separate and different functions. However, a breakthrough occurred when advances in genetics and cellular and molecular biology techniques revealed that these systems shared molecular entities (such as cytokines, hormones and neurotransmitters) with their cognate receptors. These molecular links between the three systems broaden our understanding of the regulation of physiological processes. This approach has generated a multiplicity of new concepts, including crosstalk between organs, axis, feedback, molecular sensors, protein multi-functionality, positive and negative signaling ratios and pathways (such as cell signaling, metabolism and stem cell differentiation, to name a few). The improvement of experimental approaches has often resulted in major discoveries. This, combined with clear reasoning, intuition and coherence gave rise to new and unexpected concepts, and sometimes evolving ones. These new concepts lead the reader to the incredible transformation of biology in recent years.
Download or read book Looking at Ribozymes written by Benoît Masquida and published by John Wiley & Sons. This book was released on 2024-04-02 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Behind the neologism “ribozymes” lies a family of fascinating molecules, ribo-enzymes, which have been relatively little studied. These catalytically active RNAs are found in all strata of life, from viruses to the human genome. At the end of the 1970s, the discovery of a catalytic RNA nestled in an intron, followed by another involved in the maturation of transfer RNAs, led to the discovery of new ribozymes and the transition from a strictly “proteocentric” vision, inherited from the dogma of molecular biology, to a more “nucleocentric” one. Since then, a variety of ribozymes have been identified in genomes, where their functions often remain mysterious. Looking at Ribozymes traces the discovery of these molecules and presents a picture of their functional diversity, catalytic mechanisms and distribution within the tree of life.
Download or read book Fifty Years of Evolution in Biological Research written by Jacques Balthazart and published by John Wiley & Sons. This book was released on 2023-10-10 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research in biology and all basic sciences has undergone profound transformations in recent decades. We have seen the development of extremely sophisticated techniques, allowing us to study, in an objective manner, questions that were still considered science fiction at the end of the 20th century. All of this has allowed us to develop an in-depth knowledge of vast subjects, such as the biology of the brain, for example. Fifty Years of Evolution in Biological Research presents a panorama of these different technical advances. However, at the same time, there has been an increase in the number of constraints on researchers, a monetization of research and a correlative pressure to continually publish in more prestigious journals. This has resulted in a certain degradation of the quality of research activity. This book analyzes this evolution and proposes solutions.
Download or read book Phyllotaxis Models written by Jean-Paul Walch and published by John Wiley & Sons. This book was released on 2023-08-15 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The equations of phyllotaxis were discovered by Douady and Couder: these describe the inhibition "force" generated by an incipient primordium, preventing the initiation of other primordia in its vicinity: the method that was lacking was to take into account the distance of primordia to the meristem apex over the course of its development. With these parameters, our model integrates both biochemical "forces" (inhibition due to auxin) and mechanical forces (contact pressure). This powerful tool allows us to revisit many important notions of plant biology. For example, we model auxin concentrations at the plant apex, as well as the development of vegetative and reproductive meristems. We also explain why the whorls of monocots are trimerous and those of plants with quincuncial perianths are pentamerous. We design a geometric method for reconstructing inflorescences from their building blocks, i.e. floral meristems. We also show that phyllotaxic spirals are only the application of a general property of symmetry, the advantages of which have been exploited by natural selection.
Download or read book Embryogeny and Phylogeny of the Human Posture 1 written by Anne Dambricourt Malasse and published by John Wiley & Sons. This book was released on 2021-08-17 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The future of the human posture is in the spotlight. The 200-year-old locomotion paradigm can no longer resist the advancement of knowledge, yet 2,500 years of thinking on the place of verticalized human anatomy and its reflexive consciousness in the natural history of life and the Earth, is more relevant than ever. This book retraces these reflections from pre-Socratic philosophers, focusing on the link between verticality and the most complex and consciously reflexive nervous system on the top rung of the ladder of living beings. The origin of animated forms, or animals, was considered metaphysical until the 19th century but reflection on their inception, from fertilization, paved the way for mathematics of infinitesimal geometry and dynamics. The simian filiation was inconceivable until Jean-Baptiste de Lamarck bridged the gap in 1802 with the locomotion postulate to explain the transition from quadrupedal to bipedal posture, sustained by the hypothesis of inheritance of acquired characteristics. This doctrine was overturned in 1987 by the discovery of the embryonic origins of the straightening - specific dynamics linked to neurogenesis - confirming the natural place of human verticality and nervous system complexity with its psychomotor and cognitive consequences. Sapiens find themselves at the physical limit of the straightening while mechanisms of gametogenesis have never ceased in making neurogenesis exponentially more complex. Is the future exclusively terrestrial or does intrauterine hominization open up new perspectives for space exploration? Posturologists, occlusodontics, osteopaths, cognisciences - all anthropological sciences exposed to human verticality are concerned with this discovery, which allows Sapiens to face their natural destiny
Download or read book Anatomy and Dissection of the Rat written by Warren F. Walker and published by Macmillan. This book was released on 1997-12-15 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The careful explanation of each step of the dissection, helpful diagrams and illustrations, and detailed discussion of the structure and function of each system in Anatomy and Dissection of the Rat, Third Edition, optimize the educational value of the dissection process. These laboratory exercises are available as a bound set for the first time ever; They’re still offered separately, as well. This popular series, which includes Anatomy and Dissection of the Frog and Anatomy and Dissection of the Fetal Pig, is geared toward introductory courses in biology, comparative anatomy, and zoology.
Download or read book Vertebrate Skeletal Histology and Paleohistology written by Vivian de Buffrénil and published by CRC Press. This book was released on 2021-06-24 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vertebrate Skeletal Histology and Paleohistology summarizes decades of research into the biology and biological meaning of hard tissues, in both living and extinct vertebrates. In addition to outlining anatomical diversity, it provides fundamental phylogenetic and evolutionary contexts for interpretation. An international team of leading authorities review the impact of ontogeny, mechanics, and environment in relation to bone and dental tissues. Synthesizing current advances in the biological problems of growth, metabolism, evolution, ecology, and behavior, this comprehensive and authoritative volume is built upon a foundation of concepts and technology generated over the past fifty years.
Download or read book Fundamental Neuropathology for Pathologists and Toxicologists written by Brad Bolon and published by John Wiley & Sons. This book was released on 2011-10-04 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers pathologists, toxicologists, other medical professionals, and students an introduction to the discipline and techniques of neuropathology – including chemical and environmental, biological, medical, and regulatory details important for performing an analysis of toxicant-induced neurodiseases. In addition to a section on fundamentals, the book provides detailed coverage of current practices (bioassays, molecular analysis, and nervous system pathology) and practical aspects (data interpretation, regulatory considerations, and tips for preparing reports).
Download or read book The Descent of Man written by Charles Darwin and published by VM eBooks. This book was released on 2016-02-22 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: INTRODUCTION. The nature of the following work will be best understood by a brief account of how it came to be written. During many years I collected notes on the origin or descent of man, without any intention of publishing on the subject, but rather with the determination not to publish, as I thought that I should thus only add to the prejudices against my views. It seemed to me sufficient to indicate, in the first edition of my 'Origin of Species,' that by this work "light would be thrown on the origin of man and his history;" and this implies that man must be included with other organic beings in any general conclusion respecting his manner of appearance on this earth. Now the case wears a wholly different aspect. When a naturalist like Carl Vogt ventures to say in his address as President of the National Institution of Geneva (1869), "personne, en Europe au moins, n'ose plus soutenir la creation indépendante et de toutes pièces, des espèces," it is manifest that at least a large number of naturalists must admit that species are the modified descendants of other species; and this especially holds good with the younger and rising naturalists. The greater number accept the agency of natural selection; though some urge, whether with justice the future must decide, that I have greatly overrated its importance. Of the older and honoured chiefs in natural science, many unfortunately are still opposed to evolution in every form. In consequence of the views now adopted by most naturalists, and which will ultimately, as in every other case, be followed by others who are not scientific, I have been led to put together my notes, so as to see how far the general conclusions arrived at in my former works were applicable to man. This seemed all the more desirable, as I had never deliberately applied these views to a species taken singly. When we confine our attention to any one form, we are deprived of the weighty arguments derived from the nature of the affinities which connect together whole groups of organisms—their geographical distribution in past and present times, and their geological succession. The homological structure, embryological development, and rudimentary organs of a species remain to be considered, whether it be man or any other animal, to which our attention may be directed; but these great classes of facts afford, as it appears to me, ample and conclusive evidence in favour of the principle of gradual evolution. The strong support derived from the other arguments should, however, always be kept before the mind.
