Libros de ciencias, página 33 de 2694

Invertebrates presents a modern survey of the 34 animal phyla (plus the Protista) and serves as both a college course text and a reference on invertebrate biology. Thorough and up-to-date, it is organized around the themes of bauplans (body plans) and evolution (phylogenetics). Each phylum is organized in a standardized fashion, treating the systematics, bauplan (support and movement, feeding and digestion, circulation and gas exchange, excretion and osmoregulation, nervous system, reproduction and development), and phylogeny. Detailed classifications, phylogenetic trees, and references for all phyla are provided. Tables summarize each phylum's defining attributes. The text is accompanied by an abundance of detailed line drawings and-new to this edition-color photographs.

Myxomycetes Biology Systematics Biogeography and Ecology Second Edition provides a complete collection of general and technical information on myxomycetes microorganisms Its broad scope takes an integrated approach considering a number of important aspects surrounding their genetics and molecular phylogeny The book treats myxomycetes as a distinct group from fungi and includes molecular information that discusses systematics and evolutionary pathways Written and developed by an international team of specialists this second edition contains updated information on all aspects of myxomycetes It incorporates relevant and new material on current barcoding developments plasmodial network experimentation and non STEM disciplinary assimilation of myxomycete information This book is a unique and authoritative resource for researchers in organismal biology and ecology disciplines as well as students and academics in biology ecology microbiology and similar subject areas Cover image used with permission from Steve Young Photography

Non-Hermitian quantum mechanics (NHQM) is an important alternative to the standard (Hermitian) formalism of quantum mechanics, enabling the solution of otherwise difficult problems. The first book to present this theory, it is useful to advanced graduate students and researchers in physics, chemistry and engineering. NHQM provides powerful numerical and analytical tools for the study of resonance phenomena - perhaps one of the most striking events in nature. It is especially useful for problems whose solutions cause extreme difficulties within the structure of a conventional Hermitian framework. NHQM has applications in a variety of fields, including optics, where the refractive index is complex; quantum field theory, where the parity-time (PT) symmetry properties of the Hamiltonian are investigated; and atomic and molecular physics and electrical engineering, where complex potentials are introduced to simplify numerical calculations.

Contiene los más recientes experimentos y métodos de experimentación que reflejan los últimos avances y las aplicaciones que amplían los horizontes de la investigación. Cuenta con cuestionarios al f

Freshwater ecosystems are under increasing pressure as human populations grow and the need for clean water intensifies. The demand for ecologists and environmental managers who are trained in basic freshwater ecology has never been greater. Students and practitioners new to the field of freshwater ecology and management need a text that provides them with an accessible introduction to the key questions while still providing sufficient background on basic scientific methods. Gerry Closs, Barbara Downes and Andrew Boulton have written a text that meets the requirements of these students. Following an introduction to scientific methodology and its application to the study of ecology, several key concepts in freshwater ecology are reviewed using a wide range of scientific studies into fundamental and applied ecological questions. Key ecological questions that are explored in a freshwater context include the role of animal dispersal and predators on freshwater community structure and the impact of pollutants and introduced species on freshwater ecosystems. This book represents the only freshwater ecology textbook that is specifically aimed at an introductory level. It will also be a useful primer for students who have not previously taken a specialized freshwater course but who require an accessible overview of the subject. General reviews on the methods of science, influence of scale, and the main features of freshwater systems. Coverage of several fundamental and applied ecological questions. A logical structure in each chapter that builds from a general observation of an ecological pattern, to an exploration of the various scientific approachesthat can be used to investigate such patterns. Suggested further reading lists for each chapter.

This book, first published in 2007, is an introductory textbook on quantum field theory in gravitational backgrounds intended for undergraduate and beginning graduate students in the fields of theoretical astrophysics, cosmology, particle physics, and string theory. The book covers the basic (but essential) material of quantization of fields in an expanding universe and quantum fluctuations in inflationary spacetime. It also contains a detailed explanation of the Casimir, Unruh, and Hawking effects, and introduces the method of effective action used for calculating the back-reaction of quantum systems on a classical external gravitational field. The broad scope of the material covered will provide the reader with a thorough perspective of the subject. Every major result is derived from first principles and thoroughly explained. The book is self-contained and assumes only a basic knowledge of general relativity. Exercises with detailed solutions are provided throughout the book.

Prescotts Microbiology, by Willey, is appropriate for microbiology majors and mixed majors courses. The text focuses on readability, artwork, and the integration of several key themes (including e

This fascinating book presents the experiences and pooled knowledge of two very different conservation scientists Pei Shengji from Sichuan China and Alan Hamilton from London UK They have been drawn together over many years through working on some of the same conservation projects and have discovered that they overlap in their ideas about the sorts of work that needs to be done and how it can best be carried out The book describes some of their own experiences set within the contexts of their varied careers and the development of their thinking Plant conservation is crucial to the preservation of natural ecosystems but conventional approaches have met with only limited success The authors have concluded that plant conservationists need social allies elements of society that have other primary concerns but whose efforts if successful will bring benefits to plant conservation too It is the state and condition of plants on the ground that ultimately matter in conserving ecosystems and therefore it is the role of local people who interact directly with them which enables success Ethnobotany is a key skill required of practical plant conservationists Its techniques enable them to explore connections between people and plants learn about local perspectives a

Decision Making Models A Perspective of Fuzzy Logic and Machine Learning presents the latest developments in the field of uncertain mathematics and decision science The book aims to deliver a systematic exposure to soft computing techniques in fuzzy mathematics as well as artificial intelligence in the context of real life problems and is designed to address recent techniques to solving uncertain problems encountered specifically in decision sciences Researchers professors software engineers and graduate students working in the fields of applied mathematics software engineering and artificial intelligence will find this book useful to acquire a solid foundation in fuzzy logic and fuzzy systems Other areas of note include optimization problems and artificial intelligence practices as well as how to analyze IoT solutions with applications and develop decision making mechanisms realized under uncertainty

An overview of increasingly indispensable radiometric technologiesMicrowave radiometers have become a central part of Earth observation and radioastronomy. Most existing reference works on the subject, however, largely omit two key types of radiometers: interferometric radiometers and polarimetric radiometers. The extensive applications of these two classes of radiometer and their potential for mapping distant celestial bodies and enhancing Earth observation has made it critical for the next generation of radiometric scientists and engineers to be familiar with this technology and its principles.Principles of Interferometric and Polarimetric Radiometry meets this crucial need with a first-in-class overview of this key subject. Beginning with an introduction to the foundational concepts of microwave radiometry, it proceeds to work through a careful revision of the fields major theory and techniques, with a particular emphasis on interferometric and polarimetric systems. The result promises to revolutionize the use of microwave passive sensors for Earth observation and beyond.

Describing the diversity and features of various vertebrate groups, ranging from the oldest living fishes to the relatively more recent evolution of mammals, this book covers anatomical systems including organs and tissues, as well as their function and differentiation in various vertebrate groups. The authors also discuss the evolution of vertebrate groups from the earliest extinct ancestors to current living vertebrates. The book contains illustrations to clarify various issues as well as discussions of vertebrate features that enable adaptation to aquatic and terrestrial environments.