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Mostrando 10 de 1.069 registro(s)

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libros

Agricultural Ecology and Environment

Identificadores:  ISBN 978-0-444-88610-1 (en línea)

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Cobertura temática

The increased use of chemical fertilizers and pesticides in crop production has adversely affected both the environment and the agricultural economy. Not only has it led to environmental pollution, but also the increasing costs of chemical inputs and the low prices received for agricultural products have contributed to economic unprofitability and instability.

The International Symposium on Agricultural Ecology and Environment was organised in order to discuss ways of achieving the goals of economically and environmentally sustainable agriculture. It is apparent that a truly multidisciplinary effort is required and for this reason the meeting was attended by authors from many different disciplines and geographical locations. Although their papers reflect a wide diversity of agroecosystem types and examples, several common themes emerge: the increased importance of biotic control of ecosystem processes in lower input systems; the key role of soil organic matter in stabilizing nutrient cycling; the importance of agricultural landscape diversity and complexity; the importance of studying ecological processes in natural and agricultural ecosystems; the critical need to integrate socio-economic and ecological approaches.

libros Acceso Abierto

Agricultural Implications of the Fukushima Nuclear Accident: The First Three Years

Identificadores:  ISBN 978-4-431-55826-2 (impreso) 978-4-431-55828-6 (en línea)

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Cobertura temática

libros Acceso Abierto

Agricultural Implications of the Fukushima Nuclear Accident

Identificadores:  ISBN 978-4-431-54327-5 (impreso) 978-4-431-54328-2 (en línea)

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Cobertura temática

Following the Fukushima nuclear accident, a large volume of monitoring data has been collected about the soil, air, dust, and seawater, along with data about an immense number of foods supplied to the market. Little is known, however, about the effect of radioactive fallout on agriculture, information about which is vital. Although more than 80% of the damaged area is related to agriculture, in situ information specifically for agriculture is scarce. This book provides data about the actual movement and accumulation of radioactivity in the ecological system—for example, whether debris deposited on mountains can be a cause of secondary contamination, under what conditions plants accumulate radioactive cesium in their edible parts, and how radioactivity is transferred from hay to milk. Because agriculture is so closely related to nature, many specialists with different areas of expertise must be involved in answering these questions. In the case of rice, researchers in rice cultivation as well as in soil, hydrology, and radioactivity measurement are working together to reveal the paths or accumulation of radioactivity in the field. For this purpose, the Graduate School of Agricultural and Life Sciences of The University of Tokyo has diverse facilities available throughout Japan, including farmlands, forests, and meadowlands. Many academic staff members have formed groups to conduct on-site research, with more than 40 volunteers participating. This book presents the data collected from the only project being systematically carried out across Japan after the Fukushima accident.
libros

Air-Breathing Fishes: Evolution, Diversity, and Adaptation

Identificadores:  ISBN 978-0-12-294860-2 (en línea)

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Cobertura temática

Air Breathing Fishes: Evolution, Diversity, and Adaptation is unique in its coverage of the evolution of air-breathing, incongruously because it focuses exclusively on fish. This important and fascinating book, containing nine chapters that present the life history, ecology, and physiology of many air-breathing fishes, provides an exceptional overview of air-breathing biology.
Each chapter provides a historical background, details the present status of knowledge in the field, and defines the questions needing attention in future research. Thoroughly referenced, containing more than 1,000 citations, and well documented with figures and tables, Air-Breathing Fishes is comprehensive in its coverage and will certainly have wide appeal. Researchers in vertebrate biology, paleontology, ichthyology, vertebrate evolution, natural history, comparative physiology, anatomy and many other fields will find something new and intriguing in Air-Breathing Fishes.

Key Features
* Offers a complete overview of an important and immensely interesting area of research
* Provides a perspective of air-breathing fish that spans 300 million years of vertebrate evolution
* Contains numerous illustrations as well as comprehensive charts
* Provides a synoptic treatment of all the known air-breathing species with important data on their morphological and physiological adaptations
libros

Alloy and Microstructural Design

Identificadores:  ISBN 978-0-12-690850-3 (en línea)

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Cobertura temática

Alloy and Microstructural Design serves as a guide in translating theory into design and practice and provides text for an applications courses in physical and mechanical metallurgy.
Coverage of the book includes a short history and introduction to metals and alloys; high-strength nonferrous alloys; and methods in strengthening metals for commercial use and high temperatures. The text also discusses the composite strengthening; the properties of composites; creep and stress rupture resistance and other factors related to them; fracture toughness; and mechanical equations of state. The book also covers the resistance of metals and alloys against fatigue, aqueous, stress, and hot corrosion, as well as in oxidation and hydrogen embrittlement.
The monograph is recommended for practicing engineers in the field of metallurgy who need an easily understood guide with concise text and tables of handy information. The book will also serve as a good learning material for engineering undergraduates who are studying the strength of materials.
libros

Aluminum-Lithium Alloys: Processing, Properties, and Applications

Identificadores:  ISBN 978-0-12-401698-9 (en línea)

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Cobertura temática

Because lithium is the least dense elemental metal, materials scientists and engineers have been working for decades to develop a commercially viable aluminum-lithium (Al-Li) alloy that would be even lighter and stiffer than other aluminum alloys. The first two generations of Al-Li alloys tended to suffer from several problems, including poor ductility and fracture toughness; unreliable properties, fatigue and fracture resistance; and unreliable corrosion resistance.

Now, new third generation Al-Li alloys with significantly reduced lithium content and other improvements are promising a revival for Al-Li applications in modern aircraft and aerospace vehicles. Over the last few years, these newer Al-Li alloys have attracted increasing global interest for widespread applications in the aerospace industry largely because of soaring fuel costs and the development of a new generation of civil and military aircraft. This contributed book, featuring many of the top researchers in the field, is the first up-to-date international reference for Al-Li material research, alloy development, structural design and aerospace systems engineering.

  • Provides a complete treatment of the new generation of low-density AL-Li alloys, including microstructure, mechanical behavoir, processing and applications
  • Covers the history of earlier generation AL-Li alloys, their basic problems, why they were never widely used, and why the new third generation Al-Li alloys could eventually replace not only traditional aluminum alloys but more expensive composite materials
  • Contains two full chapters devoted to applications in the aircraft and aerospace fields, where the lighter, stronger Al-Li alloys mean better performing, more fuel-efficient aircraft
libros

Analysis of Complex Disease Association Studies: A Practical Guide

Identificadores:  ISBN 978-0-12-375142-3 (en línea)

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Cobertura temática

According to the National Institute of Health, a genome-wide association study is defined as any study of genetic variation across the entire human genome that is designed to identify genetic associations with observable traits (such as blood pressure or weight), or the presence or absence of a disease or condition. Whole genome information, when combined with clinical and other phenotype data, offers the potential for increased understanding of basic biological processes affecting human health, improvement in the prediction of disease and patient care, and ultimately the realization of the promise of personalized medicine. In addition, rapid advances in understanding the patterns of human genetic variation and maturing high-throughput, cost-effective methods for genotyping are providing powerful research tools for identifying genetic variants that contribute to health and disease. (good paragraph)

This burgeoning science merges the principles of statistics and genetics studies to make sense of the vast amounts of information available with the mapping of genomes. In order to make the most of the information available, statistical tools must be tailored and translated for the analytical issues which are original to large-scale association studies. This book will provide researchers with advanced biological knowledge who are entering the field of genome-wide association studies with the groundwork to apply statistical analysis tools appropriately and effectively. With the use of consistent examples throughout the work, chapters will provide readers with best practice for getting started (design), analyzing, and interpreting data according to their research interests. Frequently used tests will be highlighted and a critical analysis of the advantages and disadvantage complimented by case studies for each will provide readers with the information they need to make the right choice for their research. Additional tools including links to analysis tools, tutorials, and references will be available electronically to ensure the latest information is available.

* Easy access to key information including advantages and disadvantage of tests for particular applications, identification of databases, languages and their capabilities, data management risks, frequently used tests
* Extensive list of references including links to tutorial websites
* Case studies and Tips and Tricks
libros

Analysis of Response in Crop and Livestock Production, The

Identificadores:  ISBN 978-0-08-037494-9 (en línea)

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Cobertura temática

This text provides an introductory outline of the analytical principles involved in appraising the efficiency of crop-fertilizer and livestock-feed response.


It provides students of both agricultural science and economics with a simple but formal exposition of the why, how and wherefore of the principles of crop and livestock analysis, thereby helping to further co-operative effort among biological and
economic researchers. The third edition has been updated and revised thoroughly. `The book is very nicely produced, easy to read, and free from errors and innacuracies...Dillon and Anderson's text is excellent value.' Outlook on Agriculture, 1990
libros

Anthropic Awareness: The Human Aspects of Scientific Thinking in NMR Spectroscopy and Mass Spectrometry

Identificadores:  ISBN 978-0-12-419963-7 (en línea)

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Cobertura temática

Anthropic Awareness: The Human Aspects of Scientific Thinking in NMR Spectroscopy and Mass Spectrometry blends psychology, philosophy, physics, mathematics, and chemistry, describing a human-centered philosophy of the essence of scientific thinking in the natural sciences and in everyday life.

It addresses the reasons why we are prone to make errors in our conclusions and how to avoid such mistakes, also exploring a number of the "mental traps" that can lead to both individual mistakes and mass misconceptions.

The book advocates that by understanding the nature of these mental traps we can adopt tactics to safely evade them. It includes Illustrative examples of common scientific misunderstandings and mental traps in both the theory and real-life application of NMR spectroscopy and mass spectrometry.

  • Provides strategies on how to deal with molecular challenges and instrument limitations
  • Presents multiple applications of small molecule structure elucidation using NMR, MS, IR, and UV
  • Explores critical topics, including anthropic awareness (AA), NMR Spectroscopy, mass spectrometry, scientific thinking, and more
  • Includes tactics on how to Improve quality control and data interpretation skills while minimizing data analysis time and increasing confidence in results
  • Presents coverage on tactics to optimize experimental NMR parameters and enhance NMR vocabulary
libros

Anti-Abrasive Nanocoatings: Current and Future Applications

Identificadores:  ISBN 978-0-85709-211-3 (en línea)

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Cobertura temática

This book provides an overview of the fabrication methods for anti-abrasive nanocoatings. The connections among fabrication parameters, the characteristics of nanocoatings and the resulting properties (i.e. nanohardness, toughness, wear rate, load-bearing ability, friction coefficient, and scratch resistance) are discussed. Size-affected mechanical properties of nanocoatings are examined, including their uses. Anti-abrasive nanocoatings, including metallic-, ceramic-, and polymeric-based layers, as well as different kinds of nanostructures, such as multi-layered nanocomposites and thin films, are reviewed.
  • Provides a comprehensive overview of the fabrication methods for anti-abrasive nanocoatings
  • Discusses the connections among fabrication parameters, the characteristics of nanocoatings and the resulting properties
  • Reviews advantages and drawbacks of fabrication methods for anti-abrasive nanocoatings and clarifies the place of these nanocoatings in the world of nanotechnology