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Biodiversity and Evolution includes chapters devoted to the evolution and biodiversity of organisms at the molecular level, based on the study of natural collections from the Museum of Natural History. The book starts with an epistemological and historical introduction and ends with a critical overview of the Anthropocene epoch. - Explores the study of natural collections of the Museum of Natural History - Examines evolution and biodiversity at the molecular level - Features an introduction focusing on epistemology and history - Provides a critical overview
One of the essential characteristics of living beings is the explosion of variety in their forms that is intrinsically linked to the diversity of the environments they have adapted to. This book, the result of collaboration between international specialists, analyzes the multiplicity of these morphologies. It explores the origin of forms, their role in defining living things, and the relationship between form and function. It exposes the role of genes and epigenetics and examines the forms of bacteria, protists and plants. The Explosion of Life Forms also studies the memory of animals and their sensory processes, the forms of robots (built in the image of living things), and medical technologies aimed at restoring damaged living forms. Finally, this work questions a common principle of construction in the diversity of forms, as well as the idea of an abandonment of the form, a possible hidden defect of some modern philosophies.
Origin of Life studies have a nearly-impossible goal: understanding nature through the comprehension of its origins and its complexities. As a growing field with poorly-defined borders, Origin of Life studies profit from progress in other disciplines. This book proposes both an overview of this large area and an in-depth look at the opinions and results obtained by some of the active contributors of this fascinating and deeply thought-provoking matter. The topics are presented in a bottom-up order, first touching on the habitability of the universe, then the rationale behind meaningful prebiotic chemistry, the possible or probable prebiotic chemical frames, the problem of chirality, and moving on through the role of minerals in biogenesis, biogenic fertile environments, the in-and-out problem as solved by vesicles physics, the evolution of the codes, the structure of LUCA and its proto metabolisms and the meaning of complex extant biological biomorphs, as exemplified by viroids. These topics and the reasoning within the chapters are provided against the backdrop of the evolution of information and complexity.
Propagating life to the next generation is a hormone-dependent process relying on the individual wish to generate own progeny and resulting in maintenance of species. Follicle-Stimulating Hormone (FSH) is a key reproductive hormone in vertebrates used as a drug in the treatment of human infertility and hypogonadism. The FSH-FSH receptor system began to be characterized in its essential functioning mechanism only in the last couple of decades, i.e. long after the clinical use of the hormone. Some novel, intriguing aspects of FSH function are now emerging, This eBook contains the most recent scientific advances about FSH and its receptor, contributed by the world leaders of the field.
This volume explores the questions and answers surrounding the 'secret of life', combining approaches from the sciences, philosophy and theology, including the emerging discipline of astrobiology.
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.
In The Aptamer Handbook, leading scientists from academia as well as biotech and pharma companies introduce the revolutionary concept of designing RNA and DNA oligonucleotides with novel functions by in vitro selection. These functions comprise high affinity binding (aptamers), catalytic activity (ribozymes and deoxyribozymes) or combinations of binding and catalytic properties (aptazymes). Basic concepts and technologies describing in detail how these functional oligonucleotides can be identified are presented. Numerous examples demonstrate the versatility of in vitro selected oligonucleotides. Special emphasis has been put on a section that shows the broad applicability of aptamers, e. g. in target validation, for analytics, or as new therapeutics. This first overview in the field is of prime interest for a broad audience of scientists both in academia and in industry who wish to expand their knowledge on the potential of new oligonucleotide functions and their applications.
Natural history collections have recently acquired an unprecedented place of importance in scientific research. Originally created in the context of systematics and taxonomy, they are now proving to be fundamental for answering various scientific and societal questions that are as significant as they are current. Natural History Collections in the Science of the 21st Century presents a wide range of questions and answers raised by the study of collections. The billions of specimens that have been collected from all around the world over more than two centuries provide us with information that is vital in our quest for knowledge about the Earth, the universe, the diversity of life and the history of humankind. These collections also provide valuable reference points from the past to help us understand the nature and dynamics of global change today. Their physical permanence is the best guarantee we have of a return to data and to information sources in the context of open science.
First comprehensive, beginning graduate level book on the emergent science of astrobiology.
All life starts as stardust and all life requires packaging for molecules, proteins, DNA, and other crucial bits. Introducing astrobiology, this book presents a provocative hypothesis for the environmental conditions and raw materials needed for life to begin and evolve on earth.