Descargar Libros y Ebooks (PDF / EPUB)

La mejor selección de ebooks gratis en español

Hemos encontrado un total de 36 libros disponibles para descargar

Energy and the Wealth of Nations

Autor: Charles A.s. Hall , Kent Klitgaard

Número de Páginas: 507

In this updated edition of a groundbreaking text, concepts such as energy return on investment (EROI) provide powerful insights into the real balance sheets that drive our “petroleum economy.” Hall and Klitgaard explore the relation between energy and the wealth explosion of the 20th century, and the interaction of internal limits to growth found in the investment process and rising inequality with the biophysical limits posed by finite energy resources. The authors focus attention on the failure of markets to recognize or efficiently allocate diminishing resources, the economic consequences of peak oil, the high cost and relatively low EROI of finding and exploiting new oil fields, including the much ballyhooed shale plays and oil sands, and whether alternative energy technologies such as wind and solar power can meet the minimum EROI requirements needed to run society as we know it. For the past 150 years, economics has been treated as a social science in which economies are modeled as a circular flow of income between producers and consumers. In this “perpetual motion” of interactions between firms that produce and households that consume, little or no accounting is...

Esemplari e simolacri dignissimi delle virtù, stimoli potenti alle medeme, cioè Eroi, campioni e personaggi celeberrimi Alessandrini, quali rassembrano teatro nobilissimo del nuovo tempio adunati d'Agrippa

Autor: Giuliano Porta

Número de Páginas: 320

Héros et héroïnes dans les mythes et les cultes grecs

Autor: Collectif

Número de Páginas: 408

La catégorie héroïque est une originalité grecque : d’autres systèmes religieux de la Méditerranée antique ne proposaient guère de notion équivalente. Mais qu’est-ce qui fait le héros grec ? La réponse est multiforme tant la question est complexe. Mais ne serait-ce pas, déclinée en des variations multiples dont cet ouvrage se veut l’écho, une des manières dont les humains mortels ont cherché à atténuer une transcendance divine trop vertigineuse ? Ils peuplent ainsi l’entre-deux de figures, bienveillantes ou malveillantes, qui aident à penser le temps, l’espace et la vie.

Elgar Encyclopedia of Ecological Economics

Autor: Emilio Padilla Rosa , Jesús Ramos-martín

Número de Páginas: 559

With diverse contributions from over 100 authors around the globe, this comprehensive Encyclopedia summarises the developments of ecological economics from the fundamental contributions to the more recent methodological debates in the field. It provides an expansive list of topics including sustainable development, the limits to growth, agroecology, implications of thermodynamic laws for economics, integrated ecologic-economic modelling, valuation of natural resources and services, and renewable and non-renewable resources management. This title contains one or more Open Access chapters.

World on Fire

Autor: Mark Rowlands

Número de Páginas: 257

The philosopher Mark Rowlands takes a novel perspective on the problem of climate change and how to address it. With energy consumption at the core of the issue, he claims climate, extinction, and pestilence as three epoch-defining environmental issues of our time. Rowlands proposes a single solution to all three: breaking our collective habit of eating animals. Bringing to bear analytic rigor and empirical data, Rowlands argues that reversing the industrial farming of animals for our consumption will both significantly reduce energy emissions and allow for free space to aggressively reforest land being used by industrial animal farms to mitigate the effects of climate change.

Earth Is Not For Sale, The: A Path Out Of Fossil Capitalism To The Other World That Is Still Possible

Autor: Peter Schwartzman , David Schwartzman

Número de Páginas: 343

'A thought provoking and documented examination of solutions to social and economic inequality, ecological tipping points, and the threat of climate catastrophe, focusing on renewable energy systems, agroecology, and social organization. The authors reject a business as usual approach, and argue that the revolution has already begun.'Climate & CapitalismThis book provides a thought provoking outline of the solutions already in hand to the challenges now facing humanity with respect to prevalent gross social and economic inequalities, ecological thresholds and tipping points, and the ever-looming threat of climate catastrophe. The authors find these solutions in the arenas of renewable energy systems, agroecological methods, and reimagined social organization. Clarity is brought to the political economic obstacles standing in the way as well as the false solutions and alleged barriers that pervade the discourse thereby delaying and obstructing progress to the solutions advanced.The authors provoke readers to face up to these challenges by demonstrating how people, all over the world, have already begun this effort through collective action ranging from the local to the global...

Transition Engineering

Autor: Susan Krumdieck

Número de Páginas: 189

Transition Engineering: Building a Sustainable Future examines new strategies emerging in response to the mega-issues of global climate change, decline in world oil supply, scarcity of key industrial minerals, and local environmental constraints. These issues pose challenges for organizations, businesses, and communities, and engineers will need to begin developing ideas and projects to implement the transition of engineered systems. This work presents a methodology for shifting away from unsustainable activities. Teaching the Transition Engineering approach and methodology is the focus of the text, and the concept is presented in a way that engineers can begin applying it in their work.

Bioenergy

Autor: Anju Dahiya

Número de Páginas: 892

Bioenergy: Biomass to Biofuels and Waste to Energy, Second Edition presents a complete overview of the bioenergy value chain, from feedstock to end products. It examines current and emerging feedstocks and advanced processes and technologies enabling the development of all possible alternative energy sources. Divided into seven parts, bioenergy gives thorough consideration to topics such as feedstocks, biomass production and utilization, life-cycle analysis, energy return on invested, integrated sustainability assessments, conversions technologies, biofuels economics, business, and policy. In addition, contributions from leading industry professionals and academics, augmented by related service-learning case studies and quizzes, provide readers with a comprehensive resource that connect theory to real-world implementation.Bioenergy: Biomass to Biofuels and Waste to Energy, Second Edition provides engineers, researchers, undergraduate and graduate students, and business professionals in the bioenergy field with valuable, practical information that can be applied to implementing renewable energy projects, choosing among competing feedstocks, technologies, and products. It also...

Energy Systems Evaluation (Volume 1)

Autor: Jingzheng Ren

Número de Páginas: 228

This book presents various methods for sustainability assessment of energy systems, under various different conditions and scenarios. It answers the questions of how to measure the sustainability of energy systems by adopting appropriate metrics and methods. This book provides readers with a comprehensive view of the frontiers of sustainability assessment methods for energy system analysis. It presents various methodologies, allowing readers to understand: the complete metrics for sustainability assessment; life cycle thinking for sustainability assessment of energy systems; and the advanced sustainability assessment methods for energy systems. This book is of interest to researchers, engineers, decision makers, and postgraduate students within the field of energy systems, sustainability, and decision analysis.

Handbook of Research methods and Applications in Environmental Studies

Autor: Matthias Ruth,

Número de Páginas: 544

This Handbook presents methods to advance the understanding of interdependencies between the well-being of human societies and the performance of their biophysical environment. It showcases applications to material and energy use; urbanization and tech

A Comprehensive Guide to Solar Energy Systems

Autor: Trevor Letcher , Vasilis M. Fthenakis

Número de Páginas: 542

A Comprehensive Guide to Solar Energy Systems: With Special Focus on Photovoltaic Systems, the most advanced and research focused text on all aspects of solar energy engineering, is a must have edition on the present state of solar technology, integration and worldwide distribution. In addition, the book provides a high-level assessment of the growth trends in photovoltaics and how investment, planning and economic infrastructure can support those innovations. Each chapter includes a research overview with a detailed analysis and new case studies that look at how recent research developments can be applied. Written by some of the most forward-thinking professionals, this book is an invaluable reference for engineers. - Contains analysis of the latest high-level research and explores real world application potential in relation to developments - Uses system international (SI) units and imperial units throughout to appeal to global engineers - Offers measurable data written by a world expert in the field on the latest developments in this fast moving and vital subject

The Economic Superorganism

Autor: Carey W. King

Número de Páginas: 474

Energy drives the economy, economics informs policy, and policy affects social outcomes. Since the oil crises of the 1970s, pundits have debated the validity of this sequence, but most economists and politicians still ignore it. Thus, they delude the public about the underlying influence of energy costs and constraints on economic policies that address such pressing contemporary issues as income inequality, growth, debt, and climate change. To understand why, Carey King explores the scientific and rhetorical basis of the competing narratives both within and between energy technology and economics. Energy and economic discourse seems to mirror Newton’s 3rd Law of Motion: For every narrative there is an equal and opposite counter-narrative. The competing energy narratives pit "drill, baby, drill!" against renewable technologies such as wind and solar. Both claim to provide secure, reliable, clean, and affordable energy to support economic growth with the most benefit to society, but how? To answer this question, we need to understand the competing economic narratives, techno-optimism and techno-realism. Techno-optimism claims that innovation overcomes any physical resource...

Upscaling Low-Carbon Energy Resources: Exploring the Material Supply Risk, Environmental Impacts and Response Policies

Autor: Jianliang Wang , Mikael Höök , Fan Tong

Número de Páginas: 110

Encyclopedia of Renewable and Sustainable Materials

Número de Páginas: 4238

Encyclopedia of Renewable and Sustainable Materials, Five Volume Set provides a comprehensive overview, covering research and development on all aspects of renewable, recyclable and sustainable materials. The use of renewable and sustainable materials in building construction, the automotive sector, energy, textiles and others can create markets for agricultural products and additional revenue streams for farmers, as well as significantly reduce carbon dioxide (CO2) emissions, manufacturing energy requirements, manufacturing costs and waste. This book provides researchers, students and professionals in materials science and engineering with tactics and information as they face increasingly complex challenges around the development, selection and use of construction and manufacturing materials. Covers a broad range of topics not available elsewhere in one resource Arranged thematically for ease of navigation Discusses key features on processing, use, application and the environmental benefits of renewable and sustainable materials Contains a special focus on sustainability that will lead to the reduction of carbon emissions and enhance protection of the natural environment with...

Failing States, Collapsing Systems

Autor: Nafeez Mosaddeq Ahmed

Número de Páginas: 108

This work executes a unique transdisciplinary methodology building on the author’s previous book, A User’s Guide to the Crisis of Civilization: And How to Save it (Pluto, 2010), which was the first peer-reviewed study to establish a social science framework for the integrated analysis of crises across climate, energy, food, economic, terror and the police state. Since the 2008 financial crash, the world has witnessed an unprecedented outbreak of social unrest in every major continent. Beginning with the birth of the Occupy movement and the Arab Spring, the eruption of civil disorder continues to wreak havoc unpredictably from Greece to Ukraine, from China to Thailand, from Brazil to Turkey, and beyond. Yet while policymakers and media observers have raced to keep up with events, they have largely missed the biophysical triggers of this new age of unrest – the end of the age of cheap fossil fuels, and its multiplying consequences for the Earth’s climate, industrial food production, and economic growth. This book for the first time develops an empirically-ground theoretical model of the complex interaction between biophysical processes and geopolitical crises, demonstrated...

Dictionary of Ecological Economics

Autor: Brent M. Haddad , Barry D. Solomon

Número de Páginas: 619

This comprehensive Dictionary brings together an extensive range of definitive terms in ecological economics. Assembling contributions from distinguished scholars, it provides an intellectual map to this evolving subject ranging from the practical to the philosophical.

Chemical Processes in Renewable Energy Systems

Autor: Vivek Utgikar

Número de Páginas: 391

Renewable Energy Technology for Engineers: Principles, Generation, Storage, Economics, and More The future requires substantial growth in renewable energy systems in order to address carbon emissions and climate change, while still improving human life. To meet this challenge, many engineers and other technical professionals need new theoretical and practical knowledge, including greater familiarity with current and emerging renewable technologies. In Chemical Processes in Renewable Energy Systems, Dr. Vivek Utgikar introduces the fundamental principles, transformations, and applications associated with each leading form of renewable energy. Writing for engineering students and practitioners, Utgikar covers solar, biomass, hydro, wind, ocean, and geothermal energy, as well as hybrid systems that integrate generation with storage. He also introduces essential principles of techno-economic analysis, to clarify issues that will continue to inform policy concerning renewable energy systems. Utgikar discusses state-of-the-art, recent developments, as well as enduring scientific and technological principles and transformations, and provides complete references to encourage deeper...

Switching Off

Autor: Patrick Moriarty , Damon Honnery

Número de Páginas: 96

The book is about global energy use, its past and present, and its increasingly uncertain future. It lists the various ecological problems facing our planet, not just climate change, and how their gravity has been underestimated. It briefly looks at the various solutions, apart from renewable energy, proposed for solving the problems our present energy use raises, including solar radiation management, carbon dioxide removal, nuclear energy, and energy efficiency. Renewable energy (RE) is seen by many as the panacea for a variety of environmental challenges, and with the New Green Deal, even as a means of accelerating economic growth. The book critically examines the prospects for RE. It concludes that although it is essential that the world shifts to RE, not only will the ecologically sustainable energy from all RE sources likely fall well short of even present global energy use, but the very short time frame left for effective action means that RE cannot be more than of minor help. Hence, deep energy reductions will be needed, especially in high-income OECD countries. The book uses an Earth Systems Science approach, which is necessary because of the interconnection between the...

BioH2 & BioCH4 Through Anaerobic Digestion

Autor: Bernardo Ruggeri , Tonia Tommasi , Sara Sanfilippo

Número de Páginas: 230

This book presents a Two-Stage Anaerobic Digestion (TSAD) technique for producing hydrogen and methane, following a step-by-step approach in order to guide readers through the experimental verification of the related hypothesis. In the first stage of AD, the reaction conditions are optimized to obtain the maximum amount of hydrogen, while in the second the liquid residue from the first phase is used as a substrate to produce fuel-methane. AD has traditionally been used to reduce the organic content of waste; this results in a biogas that is primarily constituted of CH4 and CO2. Over the last few decades, the conversion of organic matter into hydrogen by means of AD and selecting Hydrogen Producing Bacteria (HPB) has matured into a viable and sustainable technology among the pallet of H2 generation technologies. The combined bio-production of hydrogen and methane from Organic Waste Materials (OWM) is considered to be an ideal way of utilizing waste, and can increase energy efficiency (the substrate Heat Value converted into H2 and CH4 fuel) to roughly 80%, since the energy efficiency of H2-production alone (15%) is not energetically competitive. The two gas streams can be used...

Civilization Critical

Autor: Darrin Qualman

Número de Páginas: 336

The modern world is wondrous. Its factories produce ten thousand cars every hour and ten trillion transistors every second. We carry supercomputers in our pockets, and nearly a million people are in the air at any time. In Civilization Critical, Darrin Qualman takes readers on a tour of the wonders of the 21st century. But the great strength of our modern word is also its great weakness. Our immense powers to turn resources and nature into products and waste imperil our future. And plans to double and redouble the size of the global economy veto sustainability. So, is our civilization doomed? No. Doom is a choice. We can make different choices. Qualman demonstrates that a 19th- and 20th-century transition to linear systems and away from the circular patterns of nature (and of all previous civilizations) is the foundational error—the underlying problem, the root cause of climate change, resource depletion, ocean’s full of plastics, and a host of mega-problems now intensifying and merging, with potentially civilization-cracking results. In this sweeping work, Qualman reinterprets and re-explains the problems we face today, and charts a clear, hopeful path into the future.

Principles of Sustainable Energy Systems

Autor: Frank Kreith

Número de Páginas: 760

Completely revised and updated, Principles of Sustainable Energy Systems, Second Edition presents broad-based coverage of sustainable energy sources and systems. The book is designed as a text for undergraduate seniors and first-year graduate students. It focuses on renewable energy technologies, but also treats current trends such as the expanding use of natural gas from fracking and development of nuclear power. It covers the economics of sustainable energy, both from a traditional monetary as well as from an energy return on energy invested (EROI) perspective. The book provides complete and up-to-date coverage of all renewable technologies, including solar and wind power, biological processes such as anaerobic digestion and geothermal energy. The new edition also examines social issues such as food, water, population, global warming, and public policies of engineering concern. It discusses energy transition—the process by which renewable energy forms can effectively be introduced into existing energy systems to replace fossil fuels. See What’s New in the Second Edition: Extended treatment of the energy and social issues related to sustainable energy Analytic models of all...

Clean

Autor: Paul C. Godfrey , Emilio R. Tenuta

Número de Páginas: 297

Straightforward strategies for achieving sustainable practices and business success in the modern organization In Clean: Lessons from Ecolab’s Century of Positive Impact, a team of veteran sustainability experts delivers a practical toolkit for creating a forward-looking and sustainability-focused business. From Ecolab’s origins in sustainability 100 years ago to its ambitious 2030 environment and social impact goals, this book lays out a roadmap for business transformation and continued growth – today and for the next 100 years. You’ll explore the principles and methods required to build and lead a sustainable company. You’ll discover how to evolve your focus on sustainability over time, as your organization transforms and grows. You’ll learn to: Build and maintain momentum for sustainability initiatives and cement your firm’s commitment to new practices through iteration and aligning business units around core, shared sustainability goals. Embed new sustainable practices into your organization’s governance and operations DNA Identify and leverage specific sustainability levers that impact a wide variety of key performance indicators Create a set of business...

The Palgrave Handbook of Global Sustainability

Autor: Robert Brinkmann

Número de Páginas: 2585

The field of sustainability continues to evolve as a discipline. The world is facing multiple sustainability challenges such as climate change, water depletion, ecosystem loss, and environmental racism. The Handbook of Sustainability will provide a comprehensive reference for the field that examines in depth the major themes within what are known as the three E’s of sustainability: environment, equity, and economics. These three themes will serve as the main organizing body of the work. In addition, the work will include sections on history and sustainability, major figures in the development of sustainability as a discipline, and important organizations that contributed or that continue to contribute to sustainability as a field. The work is explicitly global in scope as it considers the very different issues associated with sustainability in the global north and south

Precious Forests

Autor: Miodrag Zlatic

Número de Páginas: 290

Forests are the dominant terrestrial ecosystem of Earth. They are distributed across the globe. Forests account for 75% of the gross primary productivity of the Earth's biosphere, and contain 80% of the Earth's plant biomass. Human society and forests influence each other in both positive and negative ways. Forests provide ecosystem services to humans. Forests can also impose costs, affect people's health, and interfere with tourist enjoyment. This publication presents reviews and research results on negative and positive human interference on forests, as well as ecology, management, governance, policy and economic issues. The book consists of four sections with 12 chapters derived from around the world.

Solar Technology and Global Environmental Justice

Autor: Andreas Roos

Número de Páginas: 239

Building on insights from ecological economics and philosophy of technology, this book offers a novel, interdisciplinary approach to understand the contradictory nature of Solar photovoltaic (PV) technology. Solar photovoltaic (PV) technology is rapidly emerging as a cost-effective option in the world economy. However, reports about miserable working conditions, environmentally deleterious mineral extraction and toxic waste dumps corrode the image of a problem-free future based on solar power. Against this backdrop, Andreas Roos explores whether ‘ecologically unequal exchange’ – an asymmetric transfer of labour time and natural resources – is a necessary condition for solar PV development. He demonstrates how the massive increase in solar PV installation over recent years would not have been possible without significant wage/price differences in the world economy - notably between Europe/North America and Asia- and concludes that solar PV development is currently contingent on environmental injustices in the world economy. As a solution, Roos argues that solar technology is best coupled with strategies for degrowth, which allow for a transition away from fossil fuels and...

Energy for Sustainability

Autor: John Randolph , Gilbert M. Masters

Número de Páginas: 812

China’s energy use has been doubling every decade.

Ending the Fossil Fuel Era

Autor: Thomas Princen , Jack P. Manno , Pamela L. Martin

Número de Páginas: 387

A provocative call for delegitimizing fossil fuels rather than accommodating them, accompanied by case studies from Ecuador to Appalachia and from Germany to Norway.Not so long ago, people North and South had little reason to believe that wealth from oil, gas, and coal brought anything but great prosperity. But the presumption of net benefits from fossil fuels is eroding as widening circles of people rich and poor experience the downside.A positive transition to a post-fossil fuel era cannot wait for global agreement, a swap-in of renewables, a miracle technology, a carbon market, or lifestyle change. This book shows that it is now possible to take the first step toward the post-fossil fuel era, by resisting the slow violence of extreme extraction and combustion, exiting the industry, and imagining a good life after fossil fuels. It shows how an environmental politics of transition might occur, arguing for going to the source rather than managing byproducts, for delegitimizing fossil fuels rather than accommodating them, for engaging a politics of deliberately choosing a post-fossil fuel world. Six case studies reveal how individuals, groups, communities, and an entire country...

Buying Time

Autor: Kaz Makabe

Número de Páginas: 330

WE KNOW, from repeated failures to predict and prevent catastrophes ranging from the Great Tohoku Earthquake to the global financial crisis of 2008, that complex adaptive systems, such as those found in nature or in economies, are actually very hard to predict, much less influence. Today, we face environmental degradation caused in large part by the use of fossil fuels, ever-declining efficiencies in extracting them, a pace of development for renewable energy insufficient for replacement of the fossil fuels we are burning through, and population growth that is likely to add two billion people globally by 2045. Despite partial recovery since the financial crisis of 2008, growth remains sluggish, and large budget deficits persist across much of the developed world. Meanwhile, developing states face their own challenges, stemming from unbalanced growth. Against this backdrop, and in light of the urgent need to pay closer heed to our environment, the last thing the world needs is an energy crisis triggered not merely by recurrent scares over supply, but by more lasting structural changes in our ability to use fossil fuels with reckless abandon. Buying Time applies lessons learned the...

The Energy-Climate Continuum

Autor: Antoine Bret

Número de Páginas: 173

This book puts the debates about the energy-climate continuum on a scientific ground! It is a must-read for everyone, who wants to understand how intimately the energy and climate debates are linked to each other, and who wants to participate in these omnipresent discussions. Antoine Bret explains in his book how fossil fuels became indispensable for our society. He carefully explains how and why this impacts the earth's climate. And he points out that all available fossil fuels will sooner or later be used up. Therefore, he introduces and discusses the alternatives, which are currently considered. The book is divided into three parts. The first part explains the problem and where we stand today, the second part critically discusses possible elements of solution. The third part illustrates historic case studies, containing both warning as well as encouraging examples of societies at turning points. This book is a careful introduction to these topics. The basic science behind the problem and the debates are introduced in an understandable and nicely readable fashion. Facts are illustrated with simple back-on-the-envelope calculations, providing a good feeling for orders of...

Principles of Sustainable Energy Systems

Autor: Charles F. Kutscher , Jana B. Milford , Frank Kreith

Número de Páginas: 665

Principles of Sustainable Energy Systems provides students with a fundamental and practical understanding of the energy transition. It discusses the design, production, and economics of energy conversion and storage technologies, as well as requirements and technologies for the end-use sectors of transportation, buildings, and industry. This book begins by introducing students to the important field of sustainability and then presents comprehensive coverage of solar, wind, hydropower, biomass and bio-fuels, geothermal, nuclear, and ocean-based energy technologies. This new edition features recent advances in batteries and other storage technologies, electricity transmission, electric vehicles, and beneficial electrification and demand response in buildings, as well as approaches for reducing emissions from shipping and aviation. It introduces new material on low-carbon building materials, heat pumps, and the practical design aspects of solar photovoltaic systems. This book also covers economics and energy systems analysis methods such as life cycle assessment and greenhouse gas accounting, including detailed examples of design and financial analysis using the System Advisor Model...

Principles of Sustainable Energy Systems, Third Edition

Autor: Charles F. Kutscher , Jana B. Milford

Número de Páginas: 940

PRINCIPLES OF SUSTAINABLE ENERGY SYSTEMS, Third Edition, surveys the range of sustainable energy sources and the tools that engineers, scientists, managers, and policy makers use to analyze energy generation, usage, and future trends. The text provides complete and up-to-date coverage of all renewable technologies, including solar and wind power, biofuels, hydroelectric, nuclear, ocean power, and geothermal energy. The economics of energy are introduced, with the SAM software package integrated so students can explore the dynamics of energy usage and prediction. Climate and environmental factors in energy use are integrated to give a complete picture of sustainable energy analysis and planning.

Changing Energy

Autor: John H. Perkins

Número de Páginas: 364

Changing Energy outlines how humanity came to its current energy economy through three previous energy transitions and now stands poised for a necessary fourth one. Despite the immense benefits conferred by a global energy economy based primarily on coal, oil, gas, and uranium, societies must now rebuild their energy economies to rely as much as possible on renewable energy used efficiently. This imperative to change comes from the risks of climate change plus the dangers of geopolitical tensions, health and environmental effects, and the long-term prospects for ever depleting sources of today’s energy sources. Changing Energy argues that sustainability of the benefits from energy services will come from investments made in the technologies of the fourth transition. Perkins envisions a viable post–fossil fuel energy economy and outlines the barriers that must be resolved to reach it.

The Wandering Princess

Autor: Edward W. Hanson

Número de Páginas: 731

Helene was a strong-willed princess, raised in France but closely connected with the court of Queen Victoria. After the premature end to a romance with Victoria's grandson, she married into the royal family of Italy. However, Helene began extended adventuresome trips into Africa where she became a big-game hunter, explorer and travel writer, escaping from an unhappy marriage and the boredom of court life. Her travels took her around the world, but her sense of royal duty brought her back to nurse aboard a hospital ship in Libyan waters, then to an important role as head of the Italian Red Cross nurses during the First World War while her husband headed Italy's Third Army, and her two sons served in the artillery and the navy. Afterwards, her strong Italian nationalism made her an ally to Gabriele d'Annunzio and Benito Mussolini, but the disastrous Second World War saw her grandchildren interned in Austria and her older son die as a British prisoner-of-war while she continued her charitable work in Naples. When the country voted to become a republic in 1946, Helene was the only member of the royal family allowed to remain in Italy with her second 'secret' husband.

Biofuels, Solar and Wind as Renewable Energy Systems

Autor: D. Pimentel

Número de Páginas: 513

The petroleum age began about 150 years ago. Easily available energy has s- ported major advances in agriculture, industry, transportation, and indeed many diverse activities valued by humans. Now world petroleum and natural gas s- plies have peaked and their supplies will slowly decline over the next 40–50 years until depleted. Although small amounts of petroleum and natural gas will remain underground, it will be energetically and economically impossible to extract. In the United States, coal supplies could be available for as long as 40–50 years, depending on how rapidly coal is utilized as a replacement for petroleum and natural gas. Having been comfortable with the security provided by fossil energy, especially petroleum and natural gas, we appear to be slow to recognize the energy crisis in the U. S. and world. Serious energy conservation and research on viable renewable - ergy technologies are needed. Several renewable energy technologies already exist, but sound research is needed to improve their effectiveness and economics. Most of the renewable energy technologies are in uenced by geographic location and face problems of intermittent energy supply and storage. Most...

Últimos libros y autores buscados