Libros de ciencias, página 66 de 2700

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Controlled expansion of cell populations is a fundamental feature of living organisms, being a finely-tuned balance between cell proliferation and cell death. This book aims to explain the molecular mechanisms that lie behind the multiplication and survival of eukaryotic cells. This encompasses both the normal regulation of cell populations in development or physiological adaptation and pathological mechanisms of cell cycle control in cancer. Principles of Cell Proliferation progressively introduces the function of growth factors, receptors, signal transduction pathways, gene expression, and the conserved mechanisms of the cell cycle engine. This provides a context for understanding the mechanistic consequences of the genetic alterations in oncogenes and tumour suppresser genes which underlie tumour formation. The book should satisfy advanced level courses in Cell Proliferation, Cell Cycle Control and Cancer Biology for biologists, biochemists and medical students.

Bioquímica Albert L. Lehninger La concepción actual de la bioquímica como lenguaje químico de la biología encuentra en la obra del profesor Lehninger su mejor exponente. Partiendo de la organización celular, el libro proporciona una interpretacion bioquimica unificada de los fenomenos biologicos a partir de los rasgos estructurales de las biomoleculas, de los procesos catabolicos, los de cesion de energia y, finalmente, de aquellos en los que se transfiere la informacion genetica. En la exposicion de las rutas metabolicas por las cuales se recupera la energia destacan la interpretacion de los mecanismos enzimaticos y el comentario sobre la funcion de los principales reguladores de cada una de las secuencias metabolicas. Se dedica especial atencion al estudio de la organizacion molecular y enzimatica del mitocondrio. Los procesos biosinteticos reciben atencion en la parte 3; donde se describe la utilizacion de la energia del enlace fosfato y de la reduccion de NADP para la biosintesis de biomoleculas no informativas, y finaliza con dos interesantes capitulos dedicados a los sistemas contractiles y motores y al transporte activo a traves de membranas. La obra que presentamos alcanza un adecuado equilibrio entre la quimica y la biologia, con el estudio de las bases moleculares de la informacion genetica y los estudios del papel del DNA mitocondrial, de la sintesis de DNA virales activos, del centro activo de las DNA y RNA polimerasas, de la RNA replicasa, etc.

In recent years, interest-rate modeling has developed rapidly in terms of both practice and theory. The academic and practitioners'' communities, however, have not always communicated as productively as would have been desirable. As a result, their research programs have often developed with little constructive interference. In this book, Riccardo Rebonato draws on his academic and professional experience, straddling both sides of the divide to bring together and build on what theory and trading have to offer. Rebonato begins by presenting the conceptual foundations for the application of the LIBOR market model to the pricing of interest-rate derivatives. Next he treats in great detail the calibration of this model to market prices, asking how possible and advisable it is to enforce a simultaneous fitting to several market observables. He does so with an eye not only to mathematical feasibility but also to financial justification, while devoting special scrutiny to the implications of market incompleteness. Much of the book concerns an original extension of the LIBOR market model, devised to account for implied volatility smiles. This is done by introducing a stochastic-volatility, displaced-diffusion version of the model. The emphasis again is on the financial justification and on the computational feasibility of the proposed solution to the smile problem. This book is must reading for quantitative researchers in financial houses, sophisticated practitioners in the derivatives area, and students of finance.

Winner of the 2022 Urban Affairs Association Best Book Award City visions represent shared and often desirable expectations about our urban futures This book explores the history and evolution of city visions placing them in the wider context of art culture science foresight and urban theory

Creative Responses to Environmental Crises and Aesthetics in Nordic Art and Literature gives a broad perspective on artistic responses to climate change and other environmental crises in the Nordic countries Showcasing examples of environmental literature visual art and entertainment from Sweden Norway Denmark Finland Iceland and the Faroe Islands the chapters of the volume reflect the complex interplay of the local regional and global in environmental art and activism Authored by established and notable scholars in the field of Nordic ecocriticism the volume highlights the complex and vital role art literature and other creative activities assume in times of crisis

Las razones para escribir este libro fueron, en primer lugar, el convencimiento de que el aspecto estructural de la Química inorgánica no se puede situar sobre una base sólida hasta que el conocimiento obtenido del estudio del estado solido haya sido incorporado a la Quimica como parte integral de la materia, y segundo, la conviccion igualmente fuerte de que es sencillamente insatisfactorio añadir informacion sobre las estructuras de solidos a las descripciones de los elementos y compuestos como ordinariamente se presenta en un estudio sistematico de Quimica inorganica.

Rivers show a remarkable diversity of character and behavior in any catchment. Human activities have impacted profoundly on the inherent variability in patterns and rates of river adjustment, altering what rivers look like, how they behave, and the structure and function of aquatic ecosystems. This book outlines geomorphic considerations for river management and a generic set of procedures, termed the River Styles framework, which provides a set of tools for interpreting river character, behavior, condition, and recovery potential. River management programs that "work with nature" must respect the inherent diversity and behavioral regime of aquatic ecosystems. Each catchment should be managed in its own right, recognizing the patterns and connectivity of river forms and processes, as shaped by the configuration of the system and responses to disturbance events. Applications of the River Styles framework generate a coherent package of geomorphic information that provides a physical template for river rehabilitation activities. This book is essential reading for a wide range of river practitioners, including students, technical officers, consultants, and academics. This book outlines a generic set of procedures, termed the River Styles Framework, which provides a set of tools for interpreting river character, behavior, condition, and recovery potential. Applications of the framework generate a coherent package of geomorphic information, providing a physical template for river rehabilitation activities. management and restoration of rivers is a rapidly growing topic for environmental scientists, geologists and ecologists - this book provides a learning tool with which to approach geomorphic applications to river management describes the essential geomorphological principles underlying river behaviour and evolution demonstrates how the River Styles Framework can turn geomorphic theory into practice, to develop workable strategies for restoration and management based on real case studies and authors extensive experience applicable to river systems worldwide synthesises fluvial geomorphology, ecology and management

Biología Molecular De La Célula Lewis, Julian; Bray, Dennis; Alberts, Bruce Ilustraciones en color. Bibliografia. Tercera edicion de este importante texto. Gran parte del contenido se ha reescrito totalmente de acuerdo a los nuevos avances, para proporcionar asi una vision actualizada de la biologia celular que los estudiantes puedan leer y entender

This guide is the first volume of a series on Hymenoptera of Europe. In its first part, a general presentation is given on their morphology, ecology, evolution and methods for establishing a collection of specimens. The authors also propose a key for the identification of all superfamilies recorded on the European continent. The book deals with the biology, morphology, ecology and conservation of European wild bees. It offers the first illustrated identification key for the 77 genera, as well as an exhaustive inventory of species and a complete description of representative examples of wild bees within each genus, taking into account the latest scientific advances.

This book is a comprehensive balanced and up-to-date introduction to nuclear physics that describes the experiments made to study nuclear reactions and nuclear structure, and the theories and models that have been developed to understand the properties of nuclei and their interactions. After a historical introduction, there are chapters on nuclear accelerators and detectors, elementary particles, nuclear forces, nuclear reaction theory, nuclear models, nuclear and heavy ion reactions, nuclear astrophysics and nuclear reactors. While primarily aimed at undergraduates it will also serve as a reference for graduate students and professional nuclear physicists.