Libros de ciencias, página 65 de 1686

Aquesta tardor donem la veu a algunes de les històries més vives del món rural, les de les persones que saben trencar prejudicis per obrir nous camins. Sovint són protagonistes involuntàries d’un pre

Guía de bolsillo de introducción a las aves de Aragón. Con láminas de identificación de las especies más frecuentes y características y breves apartados sobre cómo y cuándo observarlas, cómo ayudarlas y contribuir a conocerlas mejor. Incluye un mapa con s

Este libro explica, para personas no iniciadas, el concepto de materia oscura. Se utilizan unas pocas fórmulas que se estudian en la enseñanza obligatoria y se presentan de la forma más intuitiva que he podido sin perder rigor cientifico. El problema se aborda desde el planteamiento clasico de la me...

At the heart of the optimization domain are mathematical modeling of the problem and the solution methodologies The problems are becoming larger and with growing complexity Such problems are becoming cumbersome when handled by traditional optimization methods This has motivated researchers to resort to artificial intelligence AI based nature inspired solution methodologies or algorithms The Handbook of AI based Metaheuristics provides a wide ranging reference to the theoretical and mathematical formulations of metaheuristics including bio inspired swarm based socio cultural and physics based methods or algorithms their testing and validation along with detailed illustrative solutions and applications and newly devised metaheuristic algorithms This will be a valuable reference for researchers in industry and academia as well as for all Master s and PhD students working in the metaheuristics and applications domains

Este libro quiere rendir homenaje a todos aquellos que forman parte de la cadena agroalimentaria en su vertiente hortofrutícola: desde los agricultores hasta los fruteros, pasando por todos los participantes de centrales de manipulacion y confeccion, asi como los componentes de mercados mayoristas y minoristas. Abarcamos el recorrido de las frutas y hortalizas desde la produccion hasta su implantacion en los puntos de venta para provocar ser comprados por el consumidor final. Ahondamos de forma sencilla en los diferentes eslabones de la cadena: la produccion y sus condicionantes, las centralesde manipulacion y sus caracteristicas, los mercados y la comercializacion, el punto de venta y la gestion del mismo. Hablamos sobre produccion nacional y mundial, sobre el consumo de frutas y hortalizas en nuestro pais. Algunas fotografias de las mejores fruterias de España y otras de diferentes paises del Mundo complementan las explicaciones sobre formas y exposiciones de venta. En definitiva, quiere ayudar a los que en el dia a dia se dedican a ofrecer a los hogares lo mejor de nuestras huertas.

England s landscape is iconic a tapestry of distinctive habitats that together make up a country unique for its rich diversity of flora and fauna Concentrating on twelve habitats John Lewis Stempel leads us from estuary to park chalk downland to woodland river to field village to moor lake to heath fen to coastal cliffs in a book that is unquestionably his magnum opus Referencing beloved great writers in whose footsteps he treads Gilbert White John Clare W H Hudson Richard Jefferies Edward Thomas and combining breathtakingly beautiful prose with detailed wildlife observation botanical fact and ancient folklore Lewis Stempel immerses himself in each place discovering their singular atmosphere the play of the seasons the feel of the wind in midwinter the sounds of daybreak how twilight settles Each one whether managed park or wild moor plunging cliff or man made Broads has also shaped human life forming our idea of ourselves and our sense of what England means England A Natural History is the definitive volume on the English landscape and the capstone of John Lewis Stempel s nature writing No one comes close to Lewis Stempel

Stephen Moss delights once more lyrical and informative by turns he conjures with breathless eloquence another feathered beauty of our skies Benedict Allen An engrossing compilation of ornithological tidbits cultural anecdotes literary quotes and well chosen historical artwork BBC Wildlife Books of the Year Uncover the life of starlings through this beautiful guide to these majestic and gregarious birds from the bestselling author of The Owl The Robin The Wren and The Swan Even with its exquisite iridescent plumage and magical gift to mimic both human and natural sounds this common garden bird can often be overlooked But as they unite in their thousands to display their unique ability to perform dazzling aerial manoeuvres known as murmurations starlings are nothing short of breathtaking This is the captivating story of how starlings have shaped our world from influencing agriculture and inspiring musicians such as Mozart and writers such as Shakespeare to their impact as an invasive species in North America South Africa Australia and New Zealand With beautiful illustrations throughout and an expert guide to the most magnificent murmurations in the UK this eye opening biography reveals the hidden secrets of one of our most talented and lumin

Mathematical Engineering of Deep Learning provides a complete and concise overview of deep learning using the language of mathematics The book provides a self contained background on machine learning and optimization algorithms and progresses through the key ideas of deep learning These ideas and architectures include deep neural networks convolutional models recurrent models long short term memory the attention mechanism transformers variational auto encoders diffusion models generative adversarial networks reinforcement learning and graph neural networks Concepts are presented using simple mathematical equations together with a concise description of relevant tricks of the trade The content is the foundation for state of the art artificial intelligence applications involving images sound large language models and other domains The focus is on the basic mathematical description of algorithms and methods and does not require computer programming The presentation is also agnostic to neuroscientific relationships historical perspectives and theoretical research The benefit of such a concise approach is that a mathematically equipped reader can quickly grasp the essence of deep learning Key features A perfect summary of deep learning not tied to

Everything you ve always wanted to know about poisons but have been too afraid to ask

Why grow the same dull vegetables and herbs filling every supermarket shelf If you re putting in the effort and growing your own better make it something sensational There s a thrilling diversity of rare and unusual heirloom plants out there a riot of beauty colour and flavour that can only be experienced by growing your own So saddle up and join the trail blazed by Mitch the Seed Hunter as he shows you how to source grow and enjoy the most amazing cropsin the world The antithesis of mass produced hybrids and genetically modified seed heirloom crops provide a connection with the past seeds that have been passed down through generations rescued from oblivion and preserved by a dedicated community of growers From Italian flat onions to pink broad beans apple sized melons beloved of Queen Anne to purple and white Gniff carrots from Switzerland almost lost to extinction orange okra from Japan and ancient Aztec broccoli Mitch shares his passion for growing them all and making the most of their incredible flavours

The Global Casino is an introduction to environmental issues which deals both with the workings of the physical environment and the political economic and social frameworks in which the issues occur Using examples from all over the world the book highlights the underlying causes behind environmental problems the human actions which have made them issues and the hopes for solutions It is a book about the human impact on the environment and the ways in which the natural environment impacts human society The seventh edition has been fully revised and updated throughout with new case studies figures and online resources comprising a complete lecture course for tutors and multiple choice questions for students New concepts and topics covered for the first time in this edition include the blue economy marine heatwaves Africa s Great Green Wall rewilding net zero commitments nature based solutions emerging contaminants in global rivers green infrastructure in sustainable cities initiatives promoting zero emission vehicles and zoonotic diseases including the COVID 19 pandemic New case studies include gender impact assessment of big dams in Laos and Vietnam reducing food loss and waste liming sugar maple trees in North America to counteract soil acidifica

Cosmos truly is a work that will captivate and inspire readers of all ages There is something here for those at every level from primary school students right through to astrophysicists Katie Sawers BBC Sky at NightAstonishing images bring every corner of the Universe from Mars to the furthest galaxies to the printed page Cosmos is a visually captivating journey through the Universe and is as expansive as the Cosmos itself It covers everything from the asteroid belt to deep space probes the ISS to the Oort Cloud the Big Bang to the end of the Universe and just about everything in between It presents space as humanity has never seen it before In this book you ll find The latest images from NASA s James Webb Space Telescope Panoramic views of the surface of Mars and images captured by probes that have landed for the first time on comets and asteroids Features on the technology of space exploration the history of astronomy and our cultural connection to the night sky Cosmos is a tour through space starting with the Sun and inner Solar System then moving through the outer planets and into the Milky Way and finally the realm of distant galaxies The gorgeous images are supported by illustrations that dissect the image or explain the processes going

Estas páginas narran las vivencias, motivaciones y sueños de ocho militantes y simpatizantes de Futuro Vegetal. A través de sus testimonios, denuncian lo que consideran una respuesta desmedida del estado ante sus actos de desobediencia civil no violenta. Señalan que se les tacha de 'ecoterroristas' y critican que las multas, prohibiciones, sanciones e incluso penas de carcel que enfrentan no son mas que intentos de criminalizarlas, cuando su unica mision es proteger la vida frente a la crisis ecosocial que amenaza el futuro de todas las personas.

Una documentada inmersión en el asombroso universo de las ricas comunidades biológicas litorales, desde los acantilados al intermareal y el mar abierto, en busca de las aves marinas mediterráneas. Ciencia, cultura, etnografia, vivencias y mitologia confluyen para trazar un autorizado retrato de este grupo de aves, su evolucion, situacion, migraciones, taxonomia, relaciones con nuestra especie, amenazas y lo que nos depara el futuro. Esta coleccion recorre escritos originales e ineditos de no ficcion que se adentran e inspiran en la Naturaleza, con la coartada del punto de inicio o el hilo de Ariadna de un paseo. Apostamos por impulsar la creacion literaria original, descubrir en otras voces -veteranas y nuevas- el eco de nuestros anhelos, pulsar inquietudes, crear y apoyar vocaciones; entendiendo la labor editorial como creatividad en ebullicion generadora de arte y cultura, que se arriesga y crea. Lejos, a años luz, del camino facil de limitarse a importar y enlatar para la venta clones foraneos ya editados y publicados, donde la creatividad la pusieron otros, reducido el bello oficio a mera cadena de montaje y produccion comercial. Nuestra vocacion es crear; afrontamos el riesgo y nos encomendamos a ti tan solo, lectora, lector.

¿Por qué y cómo dependemos de la naturaleza para vivir?3.ª edición Gracias a los microbios por nutrirnos y defendernos, y a los hongos que han inventado remedios para matarlos; gracias a los insectos

LO QUE HOY ENTENDEMOS POR QUÍMICA SE DEBE EN GRAN MEDIDA A LOS DESCUBRIMIENTOS DE ROBERT BOYLE, ANTOINE LAVOISIER Y MARIE CURIE. Una historia divulgativa y rigurosa, que recorre tres siglos de avances en la historia de la quimica, a traves de la vida y la obra de tres figuras eminentes. Las dos transformaciones mas profundas de la historia de la ciencia fueron la de la Astrologia en Astronomia y la de la Alquimia en Quimica. La primera nos llevo al universo a gran escala y la segunda a lo mas intimo de la materia. Robert Boyle (1627-1691) fue un excelente alquimista, pero su espiritu critico lo llevo a convertirse en el primer quimico moderno. En el siglo siguiente, los trabajos de Antoine Lavoisier (1743-1794) supusieron una transformacion radical en esta nueva rama de la ciencia, que paso de un enfoque cualitativo a otro mas cuantitativo. La ultima protagonista de este libro es la unica persona que ha obtenido dos premios Nobel: Marie Curie, cuyo descubrimiento de la radiactividad encauzo la ciencia hacia derroteros insospechados. Las vidas de estos tres genios son tan apasionantes como sus logros cientificos.

Examina la noción de divisibilidad y aborda las propiedades elementales de las congruencias; estudia la existencia de raíces y las congruencias cuadráticas, para concluir con el estudio de algunas ecuaciones diofantinas de grado 2 y 3, ademas de la llamada ecuacion de Pell. El autor se centra en el tema de la criptografia.

Al encontrarse con una ecuación diferencial puede ocurrir que no resulte fácil buscar las posibles soluciones. El objetivo de este libro es ayudar a discriminar los diversos tipos de ecuaciones diferenciales y ofrecer una guia para su resolucion. Al final se incluye la resolucion guiada de algunos casos relevantes y muy habituales de ecuaciones diferenciales aplicadas en Fisica.

Get in tune with the rhythms of nature with this month by month guide to foraging Learn how to identify wild plants correctly harvest them at their prime and use them in delicious recipes and relaxing wildcrafting projects Each plant is accompanied by photography to help with accurate identification Gathering wild food summons us to become active participants in our environment fostering a profound sense of connection to the natural world around us At the heart of foraging lies an intricate understanding of the changing seasons the landscape and the delicate ecosystems that thrive within Danielle Gallacher has been foraging for over 20 years and in The Forager s Almanac she shares her expertise on how to safely harvest our countryside s edible bounties and how to use them in your cooking such as pickles preserves ciders and lemonades Danielle also shares her top wildcrafting ideas including resin firelighters home remedies salves and balms to sooth irritated skin Fully illustrated throughout and divided into 12 months you will find practical information on how to get started and what kit to bring when and where to forage each plant with photographs for accurate identification medicinal and nutritional information for edible plants imag

When famine drought and malnutrition plagued their communities these farmers tried something revolutionary and managed to nourish their families and their land in the process Farmers in some of the world s oldest agricultural areas Africa s Great Rift Valley India s Indo Gangetic Plain the Highlands of Central America and the Great Plains of the U S were toiling year after year only to find that modern industrial agriculture was turning on itself The very practices that they were using to grow food yesterday were making it more difficult to grow food today Pesticides used to protect their crops were killing off beneficial biodiversity Monocropping was depleting the soil of necessary nutrients And deforestation was making the land hotter and drier Industrial agriculture s effects on our climate and environment were multiplying and worsening until the very families growing the world s food were starving But some of these farmers took a gamble and changed their practices to work with nature rather than bending nature to their will They terraced the land to catch more rainwater and prevent soil runoff they planted a diverse range of vegetables that would balance the nutrients in the soil they replaced commercial fertilizers with organic matter from their