Variation and Fusion of Colonies in Compound Ascidians PDF Download
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Author: Frank Watts Bancroft
Publisher:
ISBN:
Category : Tunicata
Languages : en
Pages : 62
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Book Description
Author: Frank Watts Bancroft
Publisher:
ISBN:
Category : Tunicata
Languages : en
Pages : 62
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Book Description
Author: Michael T. Ghiselin
Publisher: SUNY Press
ISBN: 9780791434673
Category : Science
Languages : en
Pages : 394
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Book Description
In explaining his individuality thesis, Michael T. Ghiselin provides extended discussions of such philosophical topics as definition, the reality of various kinds of groups, and how we classify traits and processes. He develops and applies the implications for general biology and other sciences and makes the case that a better understanding of species and of classification in general puts biologists and paleontologists in a much better position to understand nature in general, and such processes as extinction in particular.
Author: H. Sawada
Publisher: Springer Science & Business Media
ISBN: 4431669825
Category : Science
Languages : en
Pages : 477
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Book Description
Ascidians are the invertebrate group that gave rise to vertebrates, thus the biology of ascidians provides an essential key to understanding both invertebrates and vertebrates. This book is the first to cover all areas of ascidian biology, including development, evolution, biologically active substances, heavy metal accumulation, asexual reproduction, host-defense mechanisms, allorecognition mechanisms, comparative immunology, neuroscience, taxonomy, ecology, genome science, and food science. The 69 articles that make up the collection were contributed by leading ascidiologists from all over the world who participated in the First International Symposium on the Biology of Ascidians, held in June 2000 in Sapporo, Japan. For scientists and students alike, the book is an invaluable source of information from the latest, most comprehensive studies of ascidian biology.
Author: Edwin Lowell Cooper
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 504
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Book Description
This timely, comprehensive volume draws on recent advances in molecular, cellular and organismal biology to provide a detailed analysis of the phylogeny and ontogeny of the immune system. This first book to provide broad coverage of this field gives a clear description of cellular and molecular interactions in the development of immune function. Although most of this work is based on studies in vertebrates, the intriguing observations of cytokine-like molecules in invertebrates are discussed. In a final section, the contributors deal with abnormalities in the development and regulation of the immune system, including primary immunodeficiency diseases, and with the normal aging of the immune system. Throughout the book, an effort has been made to compare and integrate information from studies in diverse systems, and to discuss the limitations of such comparisons. This work will be of special interest to immunologists and theoretical, cell and developmental biologisis, and much of the book will be useful to physicians working in pediatrics, internal medicine and reproductive medicine.
Author:
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 684
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Book Description
Author: Federation of American Societies for Experimental Biology
Publisher:
ISBN:
Category : Biochemistry
Languages : en
Pages : 838
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Book Description
Vols. for 1942- include proceedings of the American Physiological Society.
Author: Jeroen C. J. M. van den Bergh
Publisher: Cambridge University Press
ISBN: 1108470971
Category : Nature
Languages : en
Pages : 575
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Book Description
A complete account of evolutionary thought in the social, environmental and policy sciences, creating bridges with biology.
Author: Thomas D Seeley
Publisher: Harvard University Press
ISBN: 0674043405
Category : Science
Languages : en
Pages : 318
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Book Description
This book describes and illustrates the results of more than fifteen years of elegant experimental studies conducted by the author to investigate how a colony of bees is organized to gather its resources. The results of his research--including studies of the shaking signal, tremble dance, and waggle dance--offer the clearest, most detailed picture available of how a highly integrated animal society works.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251312702
Category : Political Science
Languages : en
Pages : 576
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Book Description
The State of the World's Biodiversity for Food and Agriculture presents the first global assessment of biodiversity for food and agriculture worldwide. Biodiversity for food and agriculture is the diversity of plants, animals and micro-organisms at genetic, species and ecosystem levels, present in and around crop, livestock, forest and aquatic production systems. It is essential to the structure, functions and processes of these systems, to livelihoods and food security, and to the supply of a wide range of ecosystem services. It has been managed or influenced by farmers, livestock keepers, forest dwellers, fish farmers and fisherfolk for hundreds of generations. Prepared through a participatory, country-driven process, the report draws on information from 91 country reports to provide a description of the roles and importance of biodiversity for food and agriculture, the drivers of change affecting it and its current status and trends. It describes the state of efforts to promote the sustainable use and conservation of biodiversity for food and agriculture, including through the development of supporting policies, legal frameworks, institutions and capacities. It concludes with a discussion of needs and challenges in the future management of biodiversity for food and agriculture. The report complements other global assessments prepared under the auspices of the Commission on Genetic Resources for Food and Agriculture, which have focused on the state of genetic resources within particular sectors of food and agriculture.
Author: International Atomic Energy Agency
Publisher:
ISBN: 9789201121165
Category : Technology & Engineering
Languages : en
Pages : 255
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Book Description
Polonium-210 is an alpha emitting radionuclide with no radioactive progeny and produces only very-low-intensity gamma rays at very low abundance. This means doses largely arise from internal exposure. In addition to the relatively high ingestion does coefficient of 210Po, radionuclide transfer in the environment results in high activity concentrations in certain foods. This publication focuses on radionuclide transfers in terrestrial, freshwater and marine environments, and provides information on key transfer processes, concepts and models--back cover.
