Libros de ciencias, página 11 de 2685

Solar radiation data is important for a wide range of applications, e.g. in engineering, agriculture, health sector, and in many fields of the natural sciences. A few examples showing the diversity of applications may include: architecture and building design e.g. air conditioning and cooling systems; solar heating system design and use; solar power generation; weather and climate prediction models; evaporation and irrigation; calculation of water requirements for crops; monitoring plant growth and disease control; and, skin cancer research. Solar radiation data must be provided in a variety of forms to suit these applications. The radiation reaching the upper atmosphere of the Earth is a quantity rather constant in time. But the radiation reaching some point on Earth surface is random in nature. The main cause is the fact that various gases within the atmosphere absorb solar radiation at different wavelengths, and clouds and dust also affect it. There are two ways to obtaining solar radiation data at ground level: by measurement and by modelling.The book will facilitate the calculation of solar radiation required by engineers, designers and scientists and, as a result, will increase the access to needed solar radiation data.

Probably the best studied stream on earth The result of unmatched long term data taken by the Max Planck outstation in Schlitz from the nearby Breitenbach stream since 1949 the special focus in this handbook and ready reference is on animal and microorganism occurrence and variation as well as chemical and physical parameters An invaluable data basis for modeling purposes for anyone dealing with stream ecology

The bestselling textbook for undergraduate ecology courses Ecology is an easy to read and well organized text for instructors and students to explore the basics of the field Bowman and Hacker motivate students with an engaging case study driven conceptual approach that highlights relevant applications and data driven examples

The Sixth Edition of Physics for Scientists and Engineers offers a completely integrated text and media solution that will help students learn most effectively and will enable professors to customize their classrooms so that they teach most efficiently. The text includes a new strategic problem-solving approach, an integrated Math Tutorial, and new tools to improve conceptual understanding.

...la calidad, precisión y selección de la información presentada es excelente. Revista de la American Chemical Society. Reconocida en la industria química mundial como la "biblia de la ingeniería quimica". Esta obra de consulta basica y sin igual pone en manos de cada quimico, cientifico, ingeniero en la industria quimica y ambiental, un acervo de informacion y tecnologia invaluable. * Mas de 2''000,000 palabras. * Tablas con las propiedades fisicas de todos los compuestos. * Cada apartado incluye el termino equivalente en ingles.

En La vida de las hormigas, Maurice Maeterlinck, premio Nobel de Literatura, vuelve a hacer gala de su interés entomológico y decide observar el minúsculo universo de estos prodigiosos insectos con la conviccion de que encierra innombrables misterios pero que, a la vez, puede despertar un sinfin de analogias con el comportamiento humano. Las hormigas se nos muestran en este libro como seres capaces de extraordinarias proezas. Como el hombre, tambien ellas cuentan con ejercitos organizados, algunas se han especializado en una suerte de ganaderia y otras parecen haber aprendido a cultivar sus alimentos. Su sistema de comunicacion tambien despierta el asombro, y nos recuerda a la telepatia. Un microcosmos admirable relatado en un estilo exquisito.

Dragonflies are among the most familiar and popular of all insects deeply embedded in human cultural history They are iconic and tell us much about the environments in which we and they live Their conservation is an important part of biodiversity conservation One modern dragonfly species is listed as extinct with many others currently threatened It is now essential to increase conservation efforts towards saving these threatened species with strategies now available for doing this Recovery of dragonfly populations goes hand in hand with improvements to both freshwater conditions and bank vegetation quality In contrast some other dragonfly species have benefitted greatly from human transformation of the landscape with artificial ponds in particular increasing the population levels of many species In turn climate change is seeing many geographical range shifts Dragonflies are variously sensitive to the health of freshwater systems and the quality of vegetation along rivers and around ponds Dragonflies are excellent indicators in these times of great concern over the quality of our freshwater supplies Their wide range of sensitivities enables us to measure the extent to which freshwater ecosystems are either deteriorating or are improving when we undertake

Agronomic crops have been used to provide foods, beverages, fodders, fuels, medicines and industrial raw materials since the dawn of human civilization. Today, agronomic crops are being cultivated by employing scientific methods instead of traditional methods. However, in the current era of climate change, agronomic crops are subjected to various environmental stresses, which results in substantial yield loss. To meet the food demands of the ever-increasing global population, new technologies and management practices are being adopted to boost yield and maintain productivity under both normal and adverse conditions. Scientists are now exploring a variety of approaches to the sustainable production of agronomic crops, including varietal development, soil management, nutrient and water management, pest management, etc. Researchers have also made remarkable progress in developing stress tolerance in crops through different approaches. However, achieving optimal production to meet the increasing food demand is an open challenge. Although there have been numerous publications on the above-mentioned problems, and despite the extensive research being conducted on them, there is hardly any comprehensive book available. In response, this book offers a timely resource, addressing all aspects of production technologies, management practices and stress tolerance in agronomic crops in a single volume.

Desde su primera edicion, hace ya casi 40 anos,Koneman. Diagnostico microbiologico. Texto y atlas se ha convertido en la obra de referencia indiscutible para el diagnostico etiologico de las enfermedades infecciosas. Su contenido hace un abordaje completo de los fundamentos y de los procedimientos de laboratorio para la identificacion microbiologica aplicada a la bacteriologia, micologia y parasitologia, incluyendo los metodos tradicionales de aislamiento y los mas novedosos basados en reacciones inmunologicas y moleculares. Estudiantes, catedraticos investigadores y profesionales del diagnostico microbiologico y de las ciencias de la salud interesados en la identificacion y el estudio de las enfermedades infecciosas se beneficiaran con el contenido completo y de facil comprension de esta obra, asi como por la gran cantidad de ilustraciones. Esta 7.a edicion ha sido totalmente actualizada y mejorada con nuevos recursos pedagogicos, escenarios clinicos, fotografias, ilustraciones y recursos adicionales para estudiantes y docentes. Caracteristicas destacadas: Contenido revisado y actualizadoIncluye un recuento completo de las tecnicas mas recientes de identificacion microbiologica basadas en tecnicas moleculares e inmunologicasAplicaciones de microbiologia clinica y diagnostica en un solo volumenPrincipios de pruebas bioquimicas a detalleInserto a color al final del libro con laminas que muestran distintos tipos de microorganismosContenido exclusivo disponible en linea en thePoint: Para estudiantes: protocolosPara profesores: banco de imagenes, presentaciones en PowerPoint (R), generador de examenes y contenido disponible para sistemas de gestion de aprendizaje (LMS)