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Showing 33,226 through 33,250 of 72,971 results

Hydrogels: Design, Synthesis and Application in Drug Delivery and Regenerative Medicine

by Thakur Raghu Singh Garry Laverty Ryan Donnelly

Hydrogels are crosslinked, macromolecular polymeric materials arranged in a three-dimensional network, which can absorb and retain large amounts of water. Hydrogels are commonly used in clinical practice and experimental medicine for a wide range of applications, including drug delivery, tissue engineering and regenerative medicine, diagnostics, cellular immobilization, separation of biomolecules or cells, and barrier materials to regulate biological adhesions. This book elucidates the underlying concepts and emerging applications of hydrogels and will provide key case studies and critical analysis of the existing research.

Hydrogels: Recent Advances (Gels Horizons: From Science to Smart Materials)

by Vijay Kumar Thakur Manju Kumari Thakur

This book discusses recent advances in hydrogels, including their generation and applications and presents a compendium of fundamental concepts. It highlights the most important hydrogel materials, including physical hydrogels, chemical hydrogels, and nanohydrogels and explores the development of hydrogel-based novel materials that respond to external stimuli, such as temperature, pressure, pH, light, biochemicals or magnetism, which represent a new class of intelligent materials. With their multiple cooperative functions, hydrogel-based materials exhibit different potential applications ranging from biomedical engineering to water purification systems. This book covers key topics including superabsorbent polymer hydrogel; intelligent hydrogels for drug delivery; hydrogels from catechol-conjugated materials; nanomaterials loaded hydrogel; electrospinning of hydrogels; biopolymers-based hydrogels; injectable hydrogels; interpenetrating-polymer-network hydrogels: radiation- and sonochemical synthesis of micro/nano/macroscopic hydrogels; DNA-based hydrogels; and multifunctional applications of hydrogels. It will prove a valuable resource for researchers working in industry and academia alike.

Hydrogen Aircraft Technology

by G.Daniel Brewer

Liquid hydrogen is shown to be the ideal fuel for civil transport aircraft, as well as for many types of military aircraft. Hydrogen Aircraft Technology discusses the potential of hydrogen for subsonic, supersonic, and hypersonic applications. Designs with sample configurations of aircraft for all three speed categories are presented, in addition to performance comparisons to equivalent designs for aircraft using conventional kerosine-type fuel and configurations for aircraft using liquid methane fuel. Other topics discussed include conceptual designs of the principal elements of fuel containment systems required for cryogenic fuels, operational elements (e.g., pumps, valves, pressure regulators, heat exchangers, lines and fittings), modifications for turbine engines to maximize the benefit of hydrogen, safety aspects compared to kerosine and methane fueled designs, equipment and facility designs for servicing hydrogen-fueled aircraft, production methods for liquid hydrogen, and the environmental advantages for using liquid hydrogen. The book also presents a plan for conducting the necessary development of technology and introducing hydrogen fuel into the worldwide civil air transport industry. Hydrogen Aircraft Technology will provide fascinating reading for anyone interested in aircraft and hydrogen fuel designs.

Hydrogen and Fuel Cell

by Johannes Töpler Jochen Lehmann

This book introduces readers to hydrogen as an essential energy carrier for use with renewable sources of primary energy. It provides an overview of the state of the art, while also highlighting the developmental and market potential of hydrogen in the context of energy technologies; mobile, stationary and portable applications; uninterruptible power supplies and in the chemical industry. Written by experienced practitioners, the book addresses the needs of engineers, chemists and business managers, as well as graduate students and researchers.

Hydrogen and Hydrogen-Containing Molecules on Metal Surfaces: Towards the Realization of Sustainable Hydrogen Economy (Springer Series in Surface Sciences #71)

by Hideaki Kasai Allan Abraham Padama Bhume Chantaramolee Ryan L. Arevalo

This book is dedicated to recent advancements in theoretical and computational studies on the interactions of hydrogen and hydrogenated molecules with metal surfaces. These studies are driven by the development of high-performance computers, new experimental findings, and the extensive work of technological applications towards the realization of a sustainable hydrogen economy. Understanding of the elementary processes of physical and chemical reactions on the atomic scale is important in the discovery of new materials with high chemical reactivity and catalytic activity, as well as high stability and durability. From this point of view, the book focuses on the behavior of hydrogen and hydrogenated molecules on flat, stepped, and reconstructed metal surfaces. It also tackles the quantum mechanical properties of hydrogen and related adsorbates; namely, molecular orbital angular momentum (spin) and diffusion along the minimum potential energy landscape on metal surfaces. All of these profoundly influence the outcomes of (1) catalytic reactions that involve hydrogen; (2) hydrogen storage in metals; and (3) hydrogen purification membranes. Lastly, it surveys the current status of the technology, outlook, and challenges for the long-desired sustainable hydrogen economy in relation to the topics covered in the book.

Hydrogen Applications and Technologies

by Mohammad Reza Rahimpour Mohammad Amin Makarem Parvin Kiani

Hydrogen has wide applications across many industries, including petroleum refineries, hydrotreating processes, and metallurgy applications. In addition, a number of valuable chemicals, such as ammonia, alcohols, and acids, are manufactured directly or indirectly with hydrogen. Hydrogen Applications and Technologies covers the utilization of hydrogen in petrochemical products, vehicles, and power generation systems, as well as in refinery hydrotreating, metallurgy, welding, annealing, and the heat‑treating of metals. Describes the application of hydrogen in producing valuable chemicals in detail Comprehensively discusses hydrogen utilization as an energy source Covers the application of hydrogen in power generation systems and across various industries Reviews hydrogen’s role as an agent in chemical reactions Part of the multivolume Handbook of Hydrogen Production and Applications, this stand-alone book guides researchers and academics in chemical, environmental, energy, and related areas of engineering interested in development and implementation of hydrogen production technologies.

Hydrogen as a Fuel: Learning from Nature

by Richard Cammack Michel Frey Robert Robson

There continues to be widespread interest in the applications of hydrogen as a clean fuel and its potential for local electricity production and use in transport. Recent years have seen a variety of breakthroughs in our understanding of the nature, structure, and biosynthesis of hydrogenases. This book is a timely description of these developments,

Hydrogen Assisted Direct Reduction of Iron Oxides

by Pasquale Cavaliere

The book describes the main approaches to produce and synthesize iron and steel through hydrogen-based technologies. Depending on the processing route and on the energy demand, the best available techniques and the most forward-looking solutions are explained. The book is edited with the contribution representing a range of industries in order to evaluate the industrial feasibility of each selected technology. It presents the most efficient solutions applied by ironmaking and steelmaking factories all around the world.

The Hydrogen Economy: Opportunities and Challenges

by Michael Ball Martin Wietschel

Responding to the sustained interest in and controversial discussion of the prospects of hydrogen, this book strives to reflect critically on the perspectives of a hydrogen economy in light of the global energy challenge, in particular the question how to meet the growing demand for transport energy in the long term and how to secure sustainable energy for transportation. This book stands out from other publications by its emphasis on setting the scene for hydrogen and the comprehensive coverage of all aspects related to the hydrogen subject, that is technical, environmental and socio-economic, and with a global geographic scope. The aim is to provide a reference book and compendium about hydrogen that should be of interest to anyone who wants to catch up on the status of the hydrogen discussion, look up a specific aspect related to hydrogen, or understand how hydrogen comes off compared to other mobility solutions. The book should appeal to a fairly broad readership: academia, policy makers and industry.

Hydrogen Embrittlement in Metals and Alloys

by Pasquale Cavaliere

This book provides a complete description of hydrogen technologies from the basic theoretical underpinnings to the different production routes for various applications. It summarizes the most recent research findings with respect to theory and the broad array of industrial technologies currently in place as well as those under development with high potential. Special attention is given to the hydrogen embrittlement mechanisms at room and high temperatures as well as problems related to hydrogen in liquid and high-pressure compressed states. The author further describes the hydrogen diffusion embrittlement issues related to different types of metallic materials from steel to light alloys to nikel-based superalloys.

Hydrogen Energetics: A Future Clean Energy Carrier

by Roman J. Press

Understand the future of clean energy with this timely introduction Hydrogen is a clean fuel that can be used to power fuel cells whose only biproduct is water. This flexible energy carrier can be produced from a range of natural processes and domestic energy resources, and it has potentially widespread applications. In an era defined by global climate change and the search for sustainable energy, hydrogen energetics is a field with transformative potential. Hydrogen Energetics provides a cutting-edge introduction to current research and applications in this vital field. It offers an overview of hydrogen energy usage, including both positives and negatives, with a particular emphasis on the economic and infrastructural dimensions. Its up-to-date view of the state of the field and balance of theoretical and practical knowledge make it an essential resource. Hydrogen Energetics readers will also find: A one-stop resource for understanding the scientific foundations, applications, and environmental impacts of hydrogen utilization Detailed discussion of topics including hydrogen properties, hydrogen production, and key characteristics of fuel cells A focus on both technical and economic aspects of hydrogen energetics Hydrogen Energetics is a valuable source for researchers and academics in any field connected to renewable energies, energy storage, and environmental science, as well as for any professionals working with sustainability and natural resource availability.

Hydrogen Energy: Production, Safety, Storage and Applications

by Lalit Mohan Das

HYDROGEN ENERGY Comprehensive resource exploring integrated hydrogen technology with guidance for developing practical operating systems Hydrogen Energy presents all-inclusive knowledge on hydrogen production and storage to enable readers to design guidelines for its production, storage, and applications, addressing the recent renewed interest in hydrogen energy to manage the global energy crisis and discussing the electrochemical potential of hydrogen in transportation and fuel cells. Written by a highly qualified author, Hydrogen Energy explores sample topics such as: Essentials of hydrogen energy, such as its occurrence, physico-chemical properties, production, transmission, delivery, storage, and utilization Technology of hydrogen utilization in the land transport sector, such as automobiles, as well as other modes of transport, like marine and air Combustion characteristics and environmental pollution features, internal combustion engines, and fuel cells Guidelines to design prototype systems, covering their safety, hydrogen induced damages and life cycle analysis Providing in-depth coverage of the subject, Hydrogen Energy is an ideal resource for researchers and professionals working towards developing time-bound goal-oriented hydrogen-based programs in the chemical, automobile, power, and process engineering sectors.

Hydrogen Energy: Principles and Applications

by Vincent J. DelGatto Louis Theodore R. Ryan Dupont Matthew C. Ogwu

Understand hydrogen as an energy resource and its potential as a dynamic solution for a carbon-neutral economy Hydrogen is an energy carrier that can be used to store, move, and deliver energy produced from other sources. It has the potential for high energy efficiency, significant environmental and social benefits, and economic competitiveness. Traditional energy resources will not be able to meet the growing energy demand, despite the advances in energy management and energy conservation—understanding how hydrogen energy can solve this problem is crucial. Hydrogen Energy: Principles and Applications provides the information needed by energy resource planners, scientists, engineers, and government officials to make informed energy-related decisions. Divided into three parts, the book opens with an introduction to various energy issues, sources, and regulations, including the basics of thermodynamics and fuel cells. The second part addresses the practical aspects of hydrogen energy, such as availability, distribution, extraction, processing, purification, transportation, transmission, and storage. The final section details the economics, energy-environmental interactions, and ethical and political considerations of the development and use of hydrogen energy, including discussion of investment and business contacts, energy option analysis and optimization, and future prospects. Covering the fundamentals of hydrogen energy with a thorough and accessible approach, the book: Equips readers with a well-rounded working knowledge of hydrogen energy Covers the latest technological advances, economic considerations, and the role hydrogen plays in a renewable energy economy Offers a pragmatic, real-world perspective rather than focusing on theoretical issues Contains nearly 50 illustrative examples ranging from elementary thermodynamic calculations to optimization applications using linear programming Hydrogen Energy: Principles and Applications is a must-read for those working in the energy industry, particularly environmental engineering and science professionals, as well as government officials, policymakers, instructors, and trainers involved in energy-related fields.

Hydrogen Energy: Production, Storage and Utilization

by Dilshad Ahmad Khan, Akhilesh Kumar Choudhary, and Deepak Sharma

Since the low energy efficiency and rise in emissions by using fossil fuels, the hydrogen economy has been considered as a unique approach to resolve these problems, making hydrogen an attractive fuel. This book titled Hydrogen Energy: Production, Storage, and Utilization describes various technologies for hydrogen production from different sources and storage in liquid, gaseous, and compound forms, which have also been covered in detail. It also highlights the various modes of transportation of hydrogen and its utilization in a variety of engineering applications such as automotive engines, fuel cells, electric power generation, and aerospace. The book also explores the safety challenges, handling issues, and future scope.This book: Covers the methods of hydrogen production including the bioconversion method. Explains the hydrogen storage technologies with proper illustrations. Includes engineering and non-engineering applications of hydrogen utilization covering the most advanced generation of fuel cells, power generation for hybrid vehicles, and space applications. Presents state-of-the-art research carried out in the domains of hydrogen production, storage, transportation, and utilization along with safety aspects. Discusses modes and methods of hydrogen transportation such as in gaseous form, liquid form, and solid form. The book has a wide scope of reaching out to diverse readers including but not limited to industrial engineers, process engineers, researchers, and academicians. The research fraternity will gain the benefit of being aware and selecting a similar recent research domain in the field of hydrogen production.

Hydrogen Energy: Challenges and Solutions for a Cleaner Future

by Bahman Zohuri

This book describes the challenges and solutions the energy sector faces by shifting towards a hydrogen based fuel economy. The most current and up-to-date efforts of countries and leaders in the automotive sector are reviewed as they strive to develop technology and find solutions to production, storage, and distribution challenges. Hydrogen fuel is a zero-emission fuel when burned with oxygen and is often used with electrochemical cells, or combustion in internal engines, to power vehicles and electric devices. This book offers unique solutions to integrating renewable sources of energy like wind or solar power into the production of hydrogen fuel, making it a cost effective, efficient and truly renewable alternative fuel.

Hydrogen Energy and Vehicle Systems (Green Chemistry and Chemical Engineering)

by Scott E. Grasman

With contributions from noted laboratory scientists, professors, and engineers, Hydrogen Energy and Vehicle Systems presents a new comprehensive approach for applying hydrogen-based technologies to the transportation and electric power generation sectors. It shows how these technologies can improve the efficiency and reliability of energy and trans

Hydrogen Energy Engineering

by Kazunari Sasaki Hai-Wen Li Akari Hayashi Junichiro Yamabe Teppei Ogura Stephen M. Lyth

This book focuses on the fundamental principles and latest research findings in hydrogen energy fields including: hydrogen production, hydrogen storage, fuel cells, hydrogen safety, economics, and the impact on society. Further, the book introduces the latest development trends in practical applications, especially in commercial household fuel cells and commercial fuel cell vehicles in Japan. This book not only helps readers to further their basic knowledge, but also presents the state of the art of hydrogen-energy-related research and development. This work serves as an excellent reference for beginners such as graduate students, as well as a handbook and systematic summary of entire hydrogen-energy systems for scientists and engineers.

Hydrogen for Clean Energy Production: Combustion Fundamentals and Applications

by Medhat A. Nemitallah Mohamed A. Habib Ahmed Abdelhafez

The book fills the existing gap in the literature on clean and hydrogen combustion technologies for industrial applications. This gas is created due to the absence of a comprehensive textbook that covers such kinds of developments. This book can be used as a textbook for graduate-level courses in the areas of clean and hydrogen combustion and as a reference book for short courses to be offered to mechanical and aerospace engineers and young researchers worldwide. The book chapters consider investigating clean and hydrogen combustion techniques for different applications based on experimental measurements along with detailed numerical simulations. Detailed descriptions of the different numerical models are presented for given applications to solve for the flow/flame fields, which are very important, especially for beginners and undergraduate students in the fields of clean and hydrogen combustion.

Hydrogen for Future Thermal Engines (Green Energy and Technology)

by Efstathios-Al. Tingas

This book explores the potential of hydrogen combustion in thermal engines and serves as a foundation for future research.Hydrogen, a well-established energy carrier, has been used in internal combustion engines for centuries, but despite progress and industry interest, hydrogen engines have yet to reach mass production. In light of recent efforts to combat climate change with clean energy and environmentally-friendly technologies, the use of hydrogen in thermal engines is gaining momentum.This book examines the unique challenges of hydrogen combustion due to its wide flammability limits, high auto-ignition temperature, and high diffusivity. It reviews current knowledge on the fundamental and practical aspects of hydrogen combustion and considers current developments and potential future advancement.

Hydrogen Fuel: Production, Transport, and Storage

by Ram B. Gupta

From Methane to Hydrogen-Making the Switch to a Cleaner Fuel Source The world's overdependence on fossil fuels has created environmental problems, such as air pollution and global warming, as well as political and economic unrest. With water as its only by-product and its availability in all parts of the world, hydrogen promises to be the next grea

Hydrogen & Fuel Cells: Advances in Transportation and Power

by Michael Frank Hordeski

The hydrogen car has been proposed as the solution to our oil problems, but how would it work, and what potential problems associated with it? This book addresses these questions and provides specifics about current developments toward a hydrogen-based energy infrastructure. It offers the reader an informed look at the current state of fuel cell power and transportation technology, and where it's headed.

Hydrogen Fuel Cells

by Shengjie Peng

This book introduces in detail the different types of hydrogen fuel cells, including alkaline fuel cells, proton exchange membrane fuel cells, solid oxide fuel cells, phosphate fuel cells, molten carbonate fuel cells, direct liquid fuel cells, etc., and discusses their operating principles, performance characteristics and application fields in depth. Readers will be able to comprehensively understand the current status and future development trends of fuel cell technology to provide technical support for hydrogen energy applications. The last two chapters of the book also introduce the automotive application and development of alkaline fuel cells, and the application of hydrogen-powered transportation equipment in the field of national defense. This book is not only suitable as a teaching material or teaching reference book for senior undergraduate and graduate students of relevant majors in colleges and universities, but also suitable for scientific and technological workers engaged in scientific research and technology research and development of new energy materials and devices and related fields.

Hydrogen Fuel Cells for Road Vehicles

by Pasquale Corbo Fortunato Migliardini Ottorino Veneri

Hydrogen Fuel Cells for Road Vehicles addresses the main issues related to the application of hydrogen fuel cell technology in the road transportation sector. A preliminary treatment is given on fuel resources and atmospheric pollution concerns which are closely related to the current technology (internal combustion engine) used for moving people and goods. The authors deal, in particular, with the problems that can hinder a widespread hydrogen market (production, storage and distribution), as well as giving an analysis of fuel cell technologies available for utilization of this energy carrier in the automotive field. Hydrogen Fuel Cells for Road Vehicles also examines the concerns faced during the design and realization of a PEM fuel cell system with optimal size and efficiency, evidencing the impact of the individual auxiliary components on energy losses and dynamic stack performance. The book ends with the analysis of two practical case studies on fuel cell propulsion systems. Hydrogen Fuel Cells for Road Vehicles is a useful text for researchers, professionals and advanced students in the fields of automotive and environmental engineering.

Hydrogen in an International Context: Vulnerabilities of Hydrogen Energy in Emerging Markets

by Ioan Iordache

Hydrogen in an International Context: Vulnerabilities of Hydrogen Energy in Emerging Markets describes strategies and developments for hydrogen civilization efforts realised by various stakeholders such as authorities, institutes, research, industry, and individuals, in different countries and at different stages of the development cycle. Through their contributions, the chapter authors in this book propose a new approach to actual and relevant topics of interest, generically called the hydrogen economy and civilization.Hydrogen vulnerabilities is a topic that includes new challenges that face the hydrogen energy market. Weaknesses for the hydrogen stakeholder are becoming more refined, and it is necessary to be an active and sensitive player to understand these. A prosperous development of hydrogen will require the assimilation of numerous, diverse and unfamiliar contexts. Challenges for hydrogen will not only be in scientific, technical, economical or public acceptance, but challenges also lie in the genesis of this topic and the neglect of some aspects, however marginal, which negatively influence the desired hydrogen developed.This book informs the reader about the status of hydrogen energy in the international market, and it includes a series of examples and case studies about hydrogen activities in various countries. Thus, due to the synergy of this library of contexts, the reader should be able to reach a level of intuition enabling them to see the strengths and weaknesses of hydrogen.

Hydrogen in Automotive Engineering: Production, Storage, Application

by Manfred Klell Helmut Eichlseder Alexander Trattner

„Wasserstoff in der Fahrzeugtechnik“ bietet einen allgemeinen Überblick über die verschiedenen Aspekte von Eigenschaften, Erzeugung, Speicherung und Anwendung von Wasserstoff. Schwerpunkte liegen auf der Thermodynamik der Speicherung von Wasserstoff sowie auf der Anwendung in der Fahrzeugtechnik und in der Energietechnik. Mit Bezug zu Forschungsvorhaben an der TU Graz und dem HyCentA wird der aktuelle Stand der Technik fundiert dargestellt. Als eigener Abschnitt wurde in dieser Auflage die Brennstoffzelle zur Stromerzeugung für Elektroantriebe ergänzt. Ein Verfahren zur Wasserstoffproduktion durch Pyrolyse aus Glycerin wurde neu aufgenommen. Ergänzt wurden Abschnitte über aktuelle Anwendungen, über Verbrennungsmotoren für Gemische aus Wasserstoff und Methan, über Werkstoffe sowie Fragen von Wirkungsgrad und CO2-Emissionen.

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