Libros de ciencias, página 83 de 2709

Modern experimental developments in condensed matter and ultracold atom physics present formidable challenges to theorists. This book provides a pedagogical introduction to quantum field theory in many-particle physics, emphasizing the applicability of the formalism to concrete problems. This second edition contains two new chapters developing path integral approaches to classical and quantum nonequilibrium phenomena. Other chapters cover a range of topics, from the introduction of many-body techniques and functional integration, to renormalization group methods, the theory of response functions, and topology. Conceptual aspects and formal methodology are emphasized, but the discussion focuses on practical experimental applications drawn largely from condensed matter physics and neighboring fields. Extended and challenging problems with fully worked solutions provide a bridge between formal manipulations and research-oriented thinking. Aimed at elevating graduate students to a level where they can engage in independent research, this book complements graduate level courses on many-particle theory.

L'espectacle del cel nocturn ha fascinat els homes des de temps immemorial. I la inquietud per comprendre la natura i el comportament dels astres va conduir els nostres avantpassats a desenvolupar l'astronomia, possiblement la mes antiga de les ciencies. Aquesta antiga inquietud continua palpitant dins nostre, malgrat que la majoria de nosaltres vivim ara en ciutats on, per culpa de la contaminacio luminica, els cels no son res mes que una ombra del que havien estat. Tot sovint ens formulem preguntes en relacio amb el cosmos. Aquest llibre que teniu a les mans intenta donar resposta a algunes d'aquestes preguntes.

Providing a powerful visual overview of the entire spectrum of human biochemistry, the third edition of the popular Color Atlas of Biochemistry is an ideal reference and study aid. It utilizes the signature Flexibook format, consisting of double-page spreads with clear explanatory text on the left-hand page and exquisitely detailed full-color graphics on the right. These bite-sized learning capsules ensure that your review of any given topic is quick, efficient, and comprehensive, allowing you to target the exact information you need for classroom and exam success. New features of this bestselling review book: Increased focus on pathobiochemical aspects and clinical correlations, especially useful for exam preparation in the clinical sciences New and expanded sections on the immune and digestive systems, motor proteins, transport processes, blood clotting and fibrinolysis, biochemistry of fatty tissue, metabolic integration, neurotransmitters and their receptors, signal transduction, and much more! Symbols for atoms, biomolecules, coenzymes, biochemical processes, and chemical reactions are color-coded to promote quick comprehension Computer graphics that provide simulated 3D representations of important molecules, making complex subject matter tangible Convenient color thumb index that guides you quickly through the book This superb didactic atlas has been used by medical and health science students worldwide since its first publication in German in 1994. It has since been translated into 9 languages and has been revised and updated regularly ever since. Its unrivalled illustrations, concise text, and focused presentation all combine to create an excellent, high-yield study guide.

Richly illustrated and packed with numerous examples, this unique global perspective introduces wetland ecology from basic principles to advanced applications. Thoroughly revised and reorganised, this new edition of this prize-winning textbook begins with underlying causal factors, before moving on to more advanced concepts that add depth and context. Each chapter begins with an explanation of the basic principles covered, illustrated with clear examples. More difficult concepts and exceptions are introduced only once the general principle is well-established. Key principles are now discussed at the beginning of the book, and in order of relative importance, enabling students to understand the most important material without wading through complex theory. New chapters on wetland restoration and wetland services draw upon practical examples from around the world, providing a global context, and a new chapter on research will be particularly relevant to the advanced student planning their own studies.

Nowhere on Earth is the challenge for ecological understanding greater, and yet more urgent, than in those parts of the globe where human activity is most intense - cities. People need to understand how cities work as ecological systems so they can take control of the vital links between human actions and environmental quality, and work for an ecologically and economically sustainable future. An ecosystem approach integrates biological, physical and social factors and embraces historical and geographical dimensions, providing our best hope for coping with the complexity of cities.This book is a first of its kind effort to bring together leaders in the biological, physical and social dimensions of urban ecosystem research with leading education researchers, administrators and practitioners, to show how an understanding of urban ecosystems is vital for urban dwellers to grasp the fundamentals of ecological and environmental science, and to understand their own environment.

"Esta guía percorre a ruta botánica, ó longo de dous quilómetros por Campus de Lugo. Con ela na man, o noso Campus mostra un aspecto absolutamente diferente. O paseo convértese nun exercicio didáctico, nunha aventura de descubrimentos botanicos para o profano, para o estudoso e mesmo para quen a botanica non garda segredos.O Campus de Lugo ofrece a sua riqueza de especies europeas, americanas e incluso africanas ou de Oceania, entre as que podemos atopar algunhas hibridas, produto das practicas de xardineria. Levan tempo ai, agardando a mirada e a clasificacion por parte dos expertos e agora, grazas o esforzo conxunto da USC e a Deputacion de Lugo, esas singularidades adquiren protagonismo e, polo tanto, un novo valor. O valor da diferenciacion grazas o coñecemento.Nestas paxinas proponse unha ruta, a mais accesible, pero o pasear polas mais de 34 hectareas e media que ocupa o noso Campus decataremonos de que non e o unico recuncho verde por descubrir da provincia. Con mais do 50 % do seu territorio declarado Reserva da Biosfera pola Unesco, en Lugo poderemos imaxinar e inventar novas rutas cada dia"

La estadística tiene un sinnúmero de aplicaciones que van desde los sondeo de opinión hasta los ensayos clínicos en medicina. De hecho la estadística influye y da forma al mundo que nos rodea. La pr

Com totes les ciències, les matemàtiques han progressat molt des que l’home primitiu va començar a comptar fins a l’actualitat. L’estudi d’aquest recorregut és apassionant i, en molts casos, de vital

La belleza de los caballos es incuestionable, tanto como que es uno de los animales más admirados por el hombre. Pero para que un caballo pueda correr, saltar y sus crines y pelo brillen, resulta imprescindible dedicarle toda la atención posible. E este volumen se explican los orígenes y la evolución de este animal, sus características anatómicas, sus enfermedades habituales y sus cuidados. Para diferenciar una raza de otra se han incluido fichas explicativas de cada una acompañadas de fotos para poder identificarlas correctamente.

La presente obra es un compendio de las diversas líneas de trabajo que definen el naciente campo de la filosofía de la química; en cada una se consideran brevemente las causas más importantes de la relativa oscuridad de la quimica, y como el reciente florecimiento del quehacer en filosofia de la quimica -parte de el documentado en el presente volumen- ha ayudado a que esta ciencia sea mas visible y aceptada como sujeto idoneo de reflexion critica dentro y fuera del laboratorio. De esta manera se cumple uno de los objetivos de este libro: aumentar la presencia de la quimica desde una perspectiva filosofica.

El estudio de las paradojas y las curiosidades de la ciencia, en particular de la matemática, es estimulante para la reflexión, ya que a menudo los filósofos recurren al mismo para revelar la complejidad del mundo real y reconocer las limitaciones de la mente humana. Utilizar paradojas, falacias y sofismas en el aula para desenmarañarlos, genera conflictos cognitivos, los cuales, si son bien dirigidos, fomentan una actitud positiva hacia la discursion y revision de los conceptos. Este libro reune una antologia de curiosidades y hechos sorprendentes del mundo de la matematica, en casi todas sus ramas: desde la aritmetica y el algebra, hasta le geometria, el calculo y la topologia.

Covers all the requirements of the Cambridge International AS and A Level Chemistry syllabus (9701). Written by highly experienced authors, Cambridge International AS and A Level Chemistry comprehensively covers the Cambridge syllabus and is now available in both print and e-book formats. Simple and clear language, colourful photos and international examples make this book accessible to students around the world. Exam-style questions at the end of each chapter reinforce knowledge and skills and offer thorough exam practice. The print book includes a Student CD-ROM of supplementary materials including test-yourself-questions, study skills guidance, animations and advice on the practical examination. These supplementary materials (with the exception of the animations) are also included in the e-book version.

Un nuevo enfoque ecorresponsable: tener en cuenta los cambios climáticos, pensar en clave global, redescubrir la biodiversidad en los jardines… Con recuadros y tablas para entender mejor por qué no cuesta tanto iniciarse. Técnicas sencillas: acolchar, recuperar el agua, preparar compost, desherbar sin herbicidas, utilizar insectos naturales… Y todo explicado paso a paso, con todos los métodos para cuidar el jardín de forma ecológica, gracias a los trucos del autor, de eficacia probada. 200 «nuevas» plantas que beneficiarán a su jardín: melíferas, plantas que nunca enferman y que las babosas respetan, adaptadas a su suelo, que florecen o que requieren un escaso riego… Todas ellas se presentan en una ficha de cultivo detallada. Los paso a paso de Larousse: ¡el éxito a su alcance!

Curiosidades sobre los seres humanos, su comportamiento; el mundo animal y sus humanas animaladas.

This is the first book to collate and synthesize the recent burgeoning primary research literature on dog behaviour, evolution, and cognition.The author presents a new ecological approach to the understanding of dog behaviour, demonstrating how dogs can be the subject of rigorous and productive scientific study without the need to confine them to a laboratory environment.Dog Behaviour, Evolution and Cognition starts with an overview of the conceptual and methodological issues associated with the study of the dog, followed by a brief description of their role in human society-almost a third of human families share their daily life with the dog! An evolutionary perspective is then introduced with a summary of current research into the process of domestication.The central part of the book is devoted to issues relating to the cognitive aspects of behaviour which have received particular attention in recent years from both psychologists and ethologists. The book''s final chapters introduce the reader to many novel approaches to dog behaviour, set in the context of behavioural development and genetics.Directions for future research are highlighted throughout the text which also incorporates links to human and primate research by drawing on homologies and analogies in both evolution and behaviour.The book will therefore be of relevance and use to anyone with an interest in behavioural ecology including graduate students of animal behaviour and cognition, as well as a more general audience of dog enthusiasts, biologists, psychologists and sociologists.