The Terrestrial Macroinvertebrates Of The Sub Antarctic Iles Kerguelen And Ile De La Possession
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The Terrestrial Macroinvertebrates Of The Sub Antarctic Iles Kerguelen And Ile De La Possession
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Author : Maurice Hulle
language : en
Publisher: John Wiley & Sons
Release Date : 2021-07-22
The Terrestrial Macroinvertebrates Of The Sub Antarctic Iles Kerguelen And Ile De La Possession written by Maurice Hulle and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-07-22 with Science categories.
The sub-Antarctic islands are remote and isolated environments with original flora and fauna composed of a few species that are highly adapted to cold oceanic conditions. Their peculiar naturalness makes these ecosystems intrinsically fragile. This book focuses on terrestrial ecosystems and, in particular, on invertebrates - earthworms, mollusks, spiders and insects - that inhabit the French sub-Antarctic islands of the South Indian Ocean. All native and introduced species are presented in the form of individual fact sheets, which include the main identification criteria, geographical distribution and principal ecological traits. Numerous summary tables, distribution maps of introduced species, and a discussion on the originality and vulnerability of this fauna are also included. The Terrestrial Macroinvertebrates of the Sub-Antarctic Iles Kerguelen and Ile de la Possession is based on an expansive literature base, as well as on observations and photographs taken as part of a research program funded by the French Polar Institute Paul-Emile Victor (IPEV). The book also gives an important part to the history of the discoveries of the different species, as well as current conservation issues.
Concepts In Biology
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Author : Marc Gilbert
language : en
Publisher: John Wiley & Sons
Release Date : 2023-10-10
Concepts In Biology written by Marc Gilbert and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-10-10 with Science categories.
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.
Asymptomatic Osseous Variations Of The Postcranial Human Skeleton
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Author : Emeline Verna
language : en
Publisher: John Wiley & Sons
Release Date : 2023-07-26
Asymptomatic Osseous Variations Of The Postcranial Human Skeleton written by Emeline Verna and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-26 with Science categories.
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.
Embryogeny And Phylogeny Of The Human Posture 2
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Author : Anne Dambricourt Malasse
language : en
Publisher: John Wiley & Sons
Release Date : 2021-12-21
Embryogeny And Phylogeny Of The Human Posture 2 written by Anne Dambricourt Malasse and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-12-21 with Science categories.
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.
Phyllotaxis Models
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Author : Jean-Paul Walch
language : en
Publisher: John Wiley & Sons
Release Date : 2023-08-15
Phyllotaxis Models written by Jean-Paul Walch and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-15 with Science categories.
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.
Embryogeny And Phylogeny Of The Human Posture 1
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Author : Anne Dambricourt Malasse
language : en
Publisher: John Wiley & Sons
Release Date : 2021-08-17
Embryogeny And Phylogeny Of The Human Posture 1 written by Anne Dambricourt Malasse and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-17 with Science categories.
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
Looking At Ribozymes
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Author : Benoît Masquida
language : en
Publisher: John Wiley & Sons
Release Date : 2024-04-02
Looking At Ribozymes written by Benoît Masquida and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-04-02 with Science categories.
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.
Fifty Years Of Evolution In Biological Research
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Author : Jacques Balthazart
language : en
Publisher: John Wiley & Sons
Release Date : 2023-10-10
Fifty Years Of Evolution In Biological Research written by Jacques Balthazart and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-10-10 with Science categories.
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.
Structures And Functions Of Retroviral Rnas
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Author : Philippe Fosse
language : en
Publisher: John Wiley & Sons
Release Date : 2022-09-12
Structures And Functions Of Retroviral Rnas written by Philippe Fosse and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-12 with Science categories.
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.
Antarctic Nutrient Cycles And Food Webs
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Author : W.R. Siegfried
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29
Antarctic Nutrient Cycles And Food Webs written by W.R. Siegfried and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-29 with Science categories.
It is a pleasure and a distinct honour for me to greet the participants, guests and ob servers of this Fourth International Symposium on Antarctic Biology which has adopted nutrient cycles and food webs as its central theme. On behalf of the Scientific Committee on Antarctic Research (SCAR) and other bodies of the International Council of Scientific Unions (ICSU), I bid you welcome. SCAR is pleased to acknowledge the role of the co-sponsors for this Symposium which include the Scientific Committee on Oceanic Research (SCOR), the Interna tional Association of Biological Oceanography (IABO), and the International Union of Biological Sciences (IUBS). In addition, SCAR and its co-sponsors wish to acknowledge the financial support of the Council for Scientific and Industrial Re search (CSIR) and the Department of Transport (DOT) of the South African govern ment. Nor should we forget to acknowledge also the role of the South African Scientific Committee on Antarctic Research (SASCAR) and one of its leaders and Vice President of SCAR, Mr. Jan de Wit, in arranging this charming venue for this Symposium.