Libros de ciencias, página 72 de 2701

El objetivo de este diccionario bilingüe es proporcionar un medio de consulta rápido y completo en las áreas de agricultura y ganadería, áreas que ante las crecientes necesidades alimentarias de la población mundial, siguen siendo fundamentales para el desarrollo económico de cualquier país. En esta obra incluye terminología de: Las principales plantas de cultivo, su clasificación, enfermedades y plagas que las atacan, las variedades más importantes de cultivos agrícolas: cereales, oleaginosas, de fibra y azucareros, cultivos forrajeros, vegetales, frutas y hortalizas, silvicultura y plantas ornamentales, producción y alimentación de animales, cría de ganado, parásitos así como enfermedades del ganado. Debido a la importancia del tema, su contenido y amplitud, este diccionario se convertirá en la referencia obligada.

Atoms, Radiation, and Radiation Protection offers professionals and advanced students a comprehensive coverage of the major concepts that underlie the origins and transport of ionizing radiation in matter. Understanding atomic structure and the physical mechanisms of radiation interactions is the foundation on which much of the current practice of radiological health protection is based. The work covers the detection and measurement of radiation and the statistical interpretation of the data. The procedures that are used to protect man and the environment from the potential harmful effects of radiation are thoroughly described. Basic principles are illustrated with an abundance of worked examples that exemplify practical applications. Chapters include problem sets (with partial answers) and extensive tables and graphs for continued use as a reference work. This completely revised and enlarged third edition includes thorough updates of the material, including the latest recommendations of the ICRP and NCRP.

This book provides a comprehensive basics-to-advanced course in an aero-thermal science vital to the design of engines for either type of craft. The text classifies engines powering aircraft and single/multi-stage rockets, and derives performance parameters for both from basic aerodynamics and thermodynamics laws. Each type of engine is analyzed for optimum performance goals, and mission-appropriate engines selection is explained. Fundamentals of Aircraft and Rocket Propulsion provides information about and analyses of: * thermodynamic cycles of shaft engines (piston, turboprop, turboshaft and propfan); * jet engines (pulsejet, pulse detonation engine, ramjet, scramjet, turbojet and turbofan); * chemical and non-chemical rocket engines; * conceptual design of modular rocket engines (combustor, nozzle and turbopumps); and * conceptual design of different modules of aero-engines in their design and off-design state. Aimed at graduate and final-year undergraduate students, this textbook provides a thorough grounding in the history and classification of both aircraft and rocket engines, important design features of all the engines detailed, and particular consideration of special aircraft such as unmanned aerial and short/vertical takeoff and landing aircraft. End-of-chapter exercises make this a valuable student resource, and the provision of a downloadable solutions manual will be of further benefit for course instructors.

Since its original appearance in 1977, Advanced Organic Chemistry has maintained its place as the premier textbook in the field, offering broad coverage of the structure, reactivity and synthesis of organic compounds. As in the earlier editions, the text contains extensive references to both the primary and review literature and provides examples of data and reactions that illustrate and document the generalizations. While the text assumes completion of an introductory course in organic chemistry, it reviews the fundamental concepts for each topic that is discussed. The two-part fifth edition has been substantially revised and reorganized for greater clarity. Among the changes include: updated material reflecting advances in the field since 2001''s Fourth Edition, especially in computational chemistry; a companion Web site that provides digital models for study of structure, reaction and selectivity; and, solutions to the exercises provided to instructors online. The control of reactivity to achieve specific syntheses is one of the overarching goals of organic chemistry. Part B describes the most general and useful synthetic reactions, organized on the basis of reaction type.Together with "Part A: Structure and Mechanisms", the two volumes are intended to provide the advanced undergraduate or beginning graduate student in chemistry with a sufficient foundation to comprehend and use the research literature in organic chemistry.

A paperback edition of a classic text, this book contains six new chapters, covering generation methods and their application, colliding waves, classification of metrics by invariants and treatments of homothetic motions. This book is an important resource for graduates and researchers in relativity, theoretical physics, astrophysics and mathematics.

Kernel smoothing has greatly evolved since its inception to become an essential methodology in the Data Science tool kit for the 21st century. Its widespread adoption is due to its fundamental role for multivariate exploratory data analysis, as well as the crucial role it plays in composite solutions to complex data challenges.Multivariate Kernel Smoothing and Its Applications offers a comprehensive overview of both aspects. It begins with a thorough exposition of the approaches to achieve the two basic goals of estimating probability density functions and their derivatives. The focus then turns to the applications of these approaches to more complex data analysis goals, many with a geometric/topological flavour, such as level set estimation, clustering (unsupervised learning), principal curves, and feature significance. Other topics, while not direct applications of density (derivative) estimation but sharing many commonalities with the previous settings, include classification (supervised learning), nearest neighbour estimation, and deconvolution for data observed with error.For a Data Scientist, each chapter contains illustrative Open Data examples that are analysed by the most appropriate kernel smoothing method. The emphasis is always placed on an intuitive understanding of the data provided by the accompanying statistical visualisations. For a reader wishing to investigate further the details of their underlying statistical reasoning, a graduated exposition to a unified theoretical framework is provided. The algorithms for efficient software implementation are also discussed.

Modern Directional Statistics collects important advances in methodology and theory for directional statistics over the last two decades. It provides a detailed overview and analysis of recent results that can help both researchers and practitioners. Knowledge of multivariate statistics eases the reading but is not mandatory.The field of directional statistics has received a lot of attention over the past two decades, due to new demands from domains such as life sciences or machine learning, to the availability of massive data sets requiring adapted statistical techniques, and to technological advances. This book covers important progresses in distribution theory,high-dimensional statistics, kernel density estimation, efficient inference on directional supports, and computational and graphical methods.

Una introducción general a la Zoología, a nivel universitario. La materia que abarca este libro está distribuida de manera que facilita su lectura, ya sea para consulta o para trabajos y conferencias. La primera parte trata de los principios de biología animal, utilizando la rana como animal modelo para establecer unas ideas básicas de estructura y función. Después se detallan las estructuras del cuerpo y su organización en sistemas especiales para llevar a cabo los procesos esenciales para la vida. Los demás capítulos tratan de las fases generales de la vida animal: reproducción, herencia, distribución y evolución. En la segunda parte hay una introducción a la clasificación y nomenclatura de los animales; cada capítulo describe la estructura y fisiología de tipos comunes de cada grupo animal importante, desde los protozoos hasta el hombre. Se estudian las relaciones y la importancia de los animales para el hombre. También hay capítulos que tratan de la distribución y evolución de los animales.

It has been over a decade since the release of the now classic original edition of Murray''s Mathematical Biology.Since then mathematical biology has grown at an astonishing rate and is well established as a distinct discipline. Mathematical modeling is now being applied in every major discipline in the biomedical sciences. Though the field has become increasingly large and specialized, this book remains important as a text that introduces some of the exciting problems that arise in biology and gives some indication of the wide spectrum of questions that modeling can address.Due to the tremendous development in the field this book is being published in two volumes. This first volume is an introduction to the field, the mathematics mainly involves ordinary differential equations that are suitable for undergraduate and graduate courses at different levels. For this new edition Murray is covering certain items in depth, giving new applications such as modeling marital interactions and temperature dependence sex determination.SIAM, 2004: "Murray''s Mathematical Biology is a classic that belongs on the shelf of any serious student or researcher in the field. Together the two volumes contain well over 1000 references, a rich source of material, together with an excellent index to help readers quickly find key words. ... I recommend the new and expanded third edition to any serious young student interested in mathematical biology who already has a solid basis in applied mathematics."