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Lightning Engineering: Physics, Computer-based Test-bed, Protection of Ground and Airborne Systems
by Paul Hoole Samuel HooleThis book gives a contemporary and comprehensive overview of the physics of lightning and protection systems, based on nearly 40 years of research, teaching, and consultancy work in this area. The book begins with an overview of the climatology of lightning and electric storms, as well as giving insight into lightning discharge from the preliminary discharges or processes such as corona, stepped leader, and subsequent return strokes, including the important submicrosecond threats and continuous current. The subsequent chapters present measures of lightning threat analysis to aircraft and electric power systems, protection measures to be used in high-voltage to low-voltage computer and communication systems, as well as to commercial and domestic buildings. The book discusses challenges posed by the submicrosecond lighting current changes and climate change to present and future high-voltage apparatus and structures (including carbon composite aircraft and new buildings) exposed to lightning strikes. Including worked examples, illustrations, and detailed analysis, Lightening Engineering will be of interest to electrical engineers, as well as researchers and graduate students.
Lightning Injuries: Electrical, Medical, and Legal Aspects
by Christopher Joh AndrewsLightning Injuries: Electrical, Medical, and Legal Aspects presents a thorough examination of injuries inflicted by lightning strikes. The expertise of acknowledged world authorities from three continents have been brought together to create this truly remarkable volume. Lightning Injuries: Electrical, Medical, and Legal Aspects begins with a short historical review featuring a discussion of the physics of lightning phenomena and the aspects of electrical circuit theory. This review provides the background for following chapters, which address topics such as the epidemiology of lightning injury, the pathogenesis of the features of lightning injury, the clinical aspects of managing patients with lightning injury, and lightning injury mediated by communications systems (including telephones). The book also describes the problem of finding protection against lightning strikes and the issues that arise in legal liability as a result of lightning strikes. The book is written for a diverse audience and includes material that makes it appropriate for all professionals in medical, legal, and technical fields. Never before has such a comprehensive collation of related facets of lightning injury been published within a single volume.
The Lightning Rod as a Danger
by Jan MeppelinkThis book investigates the physical effects of a lightning flash on a person near the down conductor of a lightning protection system. These effects are the touch voltage, the step voltage and the side flash. For this purpose, a full-scale simulation model of the human body with a resistance of 1000 ohms was first created. In the simulation model, the body can touch the down conductor or be placed close to it. Furthermore, the specific resistance of the earth is varied. Likewise, insulating layers such as asphalt can be incorporated into the simulation model. Also, special cases like water permeable layers or water layers on an asphalt layer can be calculated. In post-processing, all relevant values can be determined, such as the energy converted in the body, the charge, the current and the voltage applied to the body. A comparison with the permissible limit values then shows for the lightning protection classes whether there is danger or not and provides information on necessary measures. There is a risk for death and injury if the down conductor is touched. However, there is also a risk of a side flash if a person is standing next to a discharge. Site isolation with dry asphalt is effective, but there is a residual risk of surface discharges. In real situations with wet asphalt, water-permeable layers or asphalt with a water layer, however, there is a great risk of death or injury. Equipotential bonding with an earthing grid is a necessary but not sufficient solution with regard to the induced voltage at negative subsequent stroke. Therefore, the situation must always be examined on a case-by-case basis with regard to the safety requirements. The only effective measure to prevent injury and death due to touch voltage is an insulating down conductor in conjunction with equipotential bonding. The measures for reducing the touch voltage, such as site insulation and equipotential bonding, basically also apply to limiting the step voltage. A risk calculation according to IEC 62305-2 gives the mean time between two events of injury and death MG = 1/RA. The tolerable risk is: RA = 0,0001 or MT = 10.000 years, equivalent to one death in 10.000 years.
Lightning Strikes: Timeless Lessons in Creativity from the Life and Work of Nikola Tesla
by John F. WasikAn exploration of the scientist’s inspiring life, his controversies, his legacy, and how his creativity can help us today.Seventy years after his death, Nikola Tesla has become a rock star. Lightning Strikes examines his complete life and legacy, including Tesla’s profound influence on everything from systems integration to drone warfare. Engineers, entrepreneurs, and academics will find it invaluable not only for the never-before-published interviews and archives, but also for the creative principles that visionaries like Larry Page and Elon Musk have used to build iconic brands and groundbreaking inventions. The book also reveals why the government and business leaders wanted to shut down Tesla’s bold experiments, and how hundreds of his ideas are now being implemented globally—including clean power, robotics, alternating current motors, and wireless transmission of power and information.As a bonus, a free augmented reality app from Yetzer Studio allows you to scan beautiful full-color illustrations in the book, unlocking an interactive 3D animation as well as videos honoring Tesla's life and legacy.
Lightning Transients and Protection for Renewable Energy System
by Li Zhang Xiao Zhong Qiuqin Sun Feng Bin Zhi ZhengThis book is dedicated to lightning transients and protection for renewable energy systems, including both wind and solar energy. In addition to the formation mechanism of lightning transients, the practical engineering application has also been addressed. This book is comprehensive and covers the methodology of electromagnetic transient modelling, electromagnetic coupling for PV system, lightning protection design, testing and evaluation. This book is particularly suitable for readers interested in lightning phenomena and renewable energy systems. It would benefit researchers, engineers and graduate students in the fields of electrical engineering, renewable energy, computational electromagnetism, etc.
Lights On!: The Science of Power Generation
by Mark DennyWatt’s up? A reader-friendly introduction to all things power.Power generation is a relatively recent concern because humans had little need for sustained power until the dawn of the Industrial Revolution. Today, modern civilization is wholly dependent on the production and distribution of power. Without it, our way of life would be extinguished.In Lights On!, Mark Denny reveals the mysterious world of power generation. He takes us on a fun tour, examining the nature of energy, tracing the history of power generation, explaining the processes from production through transmission to use, and addressing questions that are currently in the headlines, such as:• Is natural gas the best alternative energy source in the near term? • Could solar power be the answer to all our problems? • Why is nuclear power such a hard sell, and are the concerns valid?Devoting individual chapters to each of the forms of power in use today—electrical, coal, oil and natural gas, hydro, nuclear, and solar—Denny explains the pros and cons of each, their availability worldwide, and which are in dwindling supply. Making clear that his approach is that of "a scientist and engineer, not a politician or businessman," Denny addresses environmental concerns by providing information to help readers understand the science and engineering of power generation so they can discuss contemporary energy issues from an informed perspective. For those who wish to delve deeper into the science, a technical appendix provides estimations for a variety of power generators.Anyone who is interested in how energy works and how it is transformed to power our lives will get a charge out of Lights On!
Lights Out!: Ten Myths About (and Real Solutions To) America's Energy Crisis
by Spencer Abraham William Guise TuckerIn this timely book, former Secretary of Energy Spencer Abraham debunks the myths that warp our current debate over energy, and offers new solutions to the real problems we face in America. Drawing on the very latest thinking from experts in industry and academia, and his own experiences running America's Energy Department, he proposes a fresh approach to meeting our daunting energy threats. This book effectively answers how America and the world can overcome the challenges of rising global energy demand, geopolitical disruptions of the energy marketplace, and the environmental impact of producing and using energy. What emerges is a pragmatic energy strategy that calls for blending a variety of energy sources including nuclear, clean coal, solar, wind, and natural gas with a more determined effort at improving energy efficiency through the deployment of smart energy grids and buildings, to help meet our challenges while preserving our economy and environment. Coming in the midst of a national debate about global warming, energy dependence and rising energy prices and rich with anecdotes from the author's service in the Senate and cabinet, this book is a clarion call that will help shape our energy future.
Lights Out: Pride, Delusion, and the Fall of General Electric
by Thomas Gryta Ted MannHow could General Electric—perhaps America&’s most iconic corporation—suffer such a swift and sudden fall from grace? This is the definitive history of General Electric&’s epic decline, as told by the two Wall Street Journal reporters who covered its fall. Since its founding in 1892, GE has been more than just a corporation. For generations, it was job security, a solidly safe investment, and an elite business education for top managers. GE electrified America, powering everything from lightbulbs to turbines, and became fully integrated into the American societal mindset as few companies ever had. And after two decades of leadership under legendary CEO Jack Welch, GE entered the twenty-first century as America&’s most valuable corporation. Yet, fewer than two decades later, the GE of old was gone. Lights Out examines how Welch&’s handpicked successor, Jeff Immelt, tried to fix flaws in Welch&’s profit machine, while stumbling headlong into mistakes of his own. In the end, GE&’s traditional win-at-all-costs driven culture seemed to lose its direction, which ultimately caused the company&’s decline on both a personal and organizational scale. Lights Out details how one of America&’s all-time great companies has been reduced to a cautionary tale for our times.
Lights Out
by Ted KoppelIn this tour de force of investigative reporting, Ted Koppel reveals that a major cyberattack on America's power grid is not only possible but likely, that it would be devastating, and that the United States is shockingly unprepared. Imagine a blackout lasting not days, but weeks or months. Tens of millions of people over several states are affected. For those without access to a generator, there is no running water, no sewage, no refrigeration or light. Food and medical supplies are dwindling. Devices we rely on have gone dark. Banks no longer function, looting is widespread, and law and order are being tested as never before. It isn't just a scenario. A well-designed attack on just one of the nation's three electric power grids could cripple much of our infrastructure--and in the age of cyberwarfare, a laptop has become the only necessary weapon. Several nations hostile to the United States could launch such an assault at any time. In fact, as a former chief scientist of the NSA reveals, China and Russia have already penetrated the grid. And a cybersecurity advisor to President Obama believes that independent actors--from "hacktivists" to terrorists--have the capability as well. "It's not a question of if," says Centcom Commander General Lloyd Austin, "it's a question of when." And yet, as Koppel makes clear, the federal government, while well prepared for natural disasters, has no plan for the aftermath of an attack on the power grid. The current Secretary of Homeland Security suggests keeping a battery-powered radio.In the absence of a government plan, some individuals and communities have taken matters into their own hands. Among the nation's estimated three million "preppers," we meet one whose doomsday retreat includes a newly excavated three-acre lake, stocked with fish, and a Wyoming homesteader so self-sufficient that he crafted the thousands of adobe bricks in his house by hand. We also see the unrivaled disaster preparedness of the Mormon church, with its enormous storehouses, high-tech dairies, orchards, and proprietary trucking company - the fruits of a long tradition of anticipating the worst. But how, Koppel asks, will ordinary civilians survive?With urgency and authority, one of our most renowned journalists examines a threat unique to our time and evaluates potential ways to prepare for a catastrophe that is all but inevitable.
Lightwave Communications
by George C. Papen Richard E. BlahutThis pioneering, course-tested text is the first to combine communications theory with the physics of optical communications. Comprehensive and rigorous, it brings together an in-depth treatment of the physical characteristics of the guided lightwave channel with the study of modern methods of algorithmic-based communication in time and space. The many different levels at which a lightwave communication signal can be described are integrated to provide a unified explanation of how a commonplace bit stream is transformed into a physical lightwave, how that lightwave travels through an optical fiber, and how it is then transformed back into the bit stream. Background fundamentals such as linear systems and electromagnetics are explained in relation to modern topics such as channel models, encoding, modulation and interference, and end-of-chapter problems are provided throughout. This is an essential text for students taking courses on optical communications, as well as researchers and professionals working in the area.
Lightwave Engineering (Optical Science and Engineering)
by Yasuo KokubunSuitable as either a student text or professional reference, Lightwave Engineering addresses the behavior of electromagnetic waves and the propagation of light, which forms the basis of the wide-ranging field of optoelectronics. Divided into two parts, the book first gives a comprehensive introduction to lightwave engineering using plane wave and then offers an in-depth analysis of lightwave propagation in terms of electromagnetic theory. Using the language of mathematics to explain natural phenomena, the book includes numerous illustrative figures that help readers develop an intuitive understanding of light propagation. It also provides helpful equations and outlines their exact derivation and physical meaning, enabling users to acquire an analytical understanding as well. After explaining a concept, the author includes several problems that are tailored to illustrate the explanation and help explain the next concept. The book addresses key topics including fundamentals of interferometers and resonators, guided wave, optical fibers, and lightwave devices and circuits. It also features useful appendices that contain formulas for Fourier transform, derivation of Green's theorem, vector algebra, Gaussian function, cylindrical function, and more. Ranging from basic to more difficult, the book’s content is designed for easily adjustable application, making it equally useful for university lectures or a review of basic theory for professional engineers.
Lightweight Alloys for Aerospace Applications
by Nack J. Kim Kumar Jata Eui Whee Lee William FrazierThis proceedings volume from the 2001 TMS Annual Meeting & Exhibition covers advances made in the area of scientific understanding of technological application of lightweight alloys. Papers focus on fundamental science as well as application and concentrate on scientific advances in aluminum, magnesium, titanium, and beryllium alloys and their composites. Processing, structure-property relationship, failure mechanisms, and advanced joining themes are also discussed.
Lightweight and Sustainable Materials for Automotive Applications
by Omar Faruk Jimi Tjong Mohini SainAutomotive manufacturers are required to decrease CO2 emissions and increase fuel economy while assuring driver comfort and safety. In recent years, there has been rapid development in the application of lightweight and sustainable materials in the automotive industry to help meet these criteria. This book provides critical reviews and the latest research results of various lightweight and sustainable materials in automotive applications. It discusses current applications and future trends of lightweight materials in the automotive area. While there are a few books published mainly focusing on automotive applications of metallic lightweight materials, to date there is no available book focusing on a broad spectrum of lightweight materials, including metal, plastic, composites, bio-fiber, bio-polymer, carbon fiber, glass fiber, nanomaterials, rubber materials, and foaming materials, as this work does. The book also includes case studies of commercial lightweight automotive parts from sustainable lightweight materials, providing an invaluable resource to those involved in this in-demand research and commercialization area.
Lightweight Energy: Membrane Architecture Exploiting Natural Renewable Resources (Research for Development)
by Alessandra Zanelli Carol Monticelli Nebojsa Jakica Zhengyu FanThis book explores membrane materials as a means of translating natural and renewable resources into a more flexible, dynamic, and reactive architectural skin. It represents the first time that energy-saving design has been addressed systematically in relation to lightweight building systems and tensile membranes. Understanding of the energetic behavior of membranes and foils used as a building envelope is a fundamental theme, as it is the integration of flexible photovoltaics in membranes, as well as the exploitation of water and wind resources. A theoretical, methodological framework for consciously designing the membrane life cycle is presented. The authors cross-cut and combine exploration of climate-based design methodology and life cycle thinking strategies. Both active and passive systems are investigated, referring to alternative productive resources like sun, wind, and water. Case studies are brought forward in the book’s second half, highlighting energy lightness for an increasingly dematerialized architecture and addressing inherent issues. Four main research and development paths are presented, the first two focusing on advancements in façade materials and Photovoltaic systems applicable to membrane architecture, the third referring to fog and dew harvesting and the fourth dealing with the future frontier of flexible transparency and designs for well-being through a passive solar system.
Lightweight Hardware Security and Physically Unclonable Functions: Improving Security of Constrained IoT Devices
by Kasem Khalil Haytham Idriss Tarek Idriss Magdy BayoumiThis book discusses the design and evaluation of Physically Unclonable Functions (PUFs) that are suitable for securing highly energy constrained devices, while at the same time classifying the many applications and devices that would benefit from various PUF designs. The authors provide a comprehensive study of the various approaches that are used to mitigate PUFs’ shortcomings, while at the same time highlighting those that are most efficient. Coverage also includes state-of-the-art approaches to designing PUFs with high resilience to machine learning attacks and hardware implementation of area-efficient and high performing PUF architectures. The authors also classify different IoT applications and devices, depending on their security needs and limitations, offering a new perspective on how different PUF designs fit in the overall scope of IoT security.
Lightweight Polymer Composite Structures: Design and Manufacturing Techniques
by Sanjay Mavinkere Rangappa, Jyotishkumar Parameswaranpillai, Suchart Siengchin, and Lothar KrollThis book provides a comprehensive account of developments in the area of lightweight polymer composites. It encompasses design and manufacturing methods for the lightweight polymer structures, various techniques, and a broad spectrum of applications. The book highlights fundamental research in lightweight polymer structures and integrates various aspects from synthesis to applications of these materials. Features Serves as a one stop reference with contributions from leading researchers from industry, academy, government, and private research institutions across the globe Explores all important aspects of lightweight polymer composite structures Offers an update of concepts, advancements, challenges, and application of lightweight structures Current status, trends, future directions, and opportunities are discussed, making it friendly for both new and experienced researchers.
The Lightweight Treated Soil Method: New Geomaterials for Soft Ground Engineering in Coastal Areas
by Takashi Tsuchida Kazuhiko EgashiraThis is an in-depth practical examination of the newly developed Lightweight Treated Soil Method, based on the extensive research and experience of two leading recognized experts. Indispensable to geotechnical and construction engineers or to researchers and professionals interested in coastal engineering techniques, geotechnical engineering or geo
The Lignan Handbook
by Norman G. Lewis Laurence B. Davin V. Ranjit N. Munasinghe Andrew D. RobertsLignans are aromatic compounds isolated from plants. This handbook presents an authoritative and comprehensive review of lignan chemistry, biochemistry, nomenclature, uses, and occurrence. Lignans are used in a wide variety of industries and this book will appeal to those working in the pulp and paper industries, renewable energy, specialty chemicals, pharmaceuticals, flavors and fragrances, agriculture and forestry, evolution and ecology. Additionally, the book features a comprehensive lignans dictionary section, drawn from the prestigious Dictionary of Natural Products. Other features include: Presents a comprehensive and up-to-date account of this important group of natural products Addresses and resolves problems in current lignan nomenclature Edited by the leaders in the field of lignan chemistry and biochemistry
Lignin: Biosynthesis and Transformation for Industrial Applications (Springer Series on Polymer and Composite Materials)
by Ashok Kumar Swati SharmaThis book presents a comprehensive overview on origin, structure, properties, modification strategies and applications of the biopolymer lignin. It is organized into four themed parts. The first part focuses on the analysis and characterization of the second most abundant biopolymer. The following part is devoted to the biological aspects of lignin such as biosynthesis and degradation. In the third part, chemical modification strategies and the preparation of composites as well as nano- and microparticles are discussed.The final part addresses the industrial application of lignin and its derivatives, as well as lignin materials. The usage for synthesis of biofuels, fine chemicals and in agriculture and food industry is covered.This book is a comprehensive source for researchers, scientists and engineers working in the field of biopolymers as well as renewable materials and sources.
Lignin and Lignans: Advances in Chemistry
by Cyril Heitner Donald R. Dimmel John A. SchmidtOver the past four decades, there has been immense progress in every area of lignin science, ranging from the enzymology of lignin biodegradation, to the delignification of wood fiber during pulping and bleaching, to advances in spectroscopy. Lignin and Lignans: Advances in Chemistry captures the developments that have been achieved by world-class
Lignin Chemistry: Characterization, Isolation, and Valorization
by Bert F. Sels Yuhe LiaoLignin Chemistry A thorough reference guide to Lignin Chemistry, from inherent structure revealing to transformation into chemicals, fuels, and materials Climate change, driven by rising greenhouse gas emissions, is the defining challenge of our time. Reducing our dependence on non-renewable resources such as fossil fuels will require alternative, more sustainable resources. Lignin, the only widely-occurring, renewable, aromatic bio-polymer in Nature, has a range of application potential in the production of chemicals, fuels, and other industrial materials. Lignin science has become one of the fastest-growing and most significant areas of sustainable chemistry in the world. Lignin Chemistry: Characterization, Isolation, and Valorization presents a systematic, multidisciplinary overview of this cutting-edge field and its current state of research. Beginning with a robust characterization of lignin, the book addresses the isolation and transformation of lignin, as well as the book inspires with a plethora of applications. The result is a critical resource for researchers and professionals in any area of academic or industry where renewable biomass, in particular lignin, has importance. Lignin Chemistry readers will find: Thermochemical and catalytic strategies for lignin conversionDetailed discussion of the valorization of lignin towards biopolymers, nanoparticles, carbon fibers and materials, and hydrogelsAn authorial team with immense and varied research experience Lignin Chemistry is ideal for chemical engineers, catalytic chemists, biochemists, material scientists, and analytical chemists in industry.
The Lignin Macromolecule: A Compendium of Sustainable Technologies (SpringerBriefs in Applied Sciences and Technology)
by Silvio Vaz Jr.This book covers lignin, a renewable source of carbonaceous material derived from biomass, which is a subject of research, development and innovation in both academia and industry. From lignin we can obtain chemicals (e.g., aromatics, phenols), materials (e.g., fibres, engineered plastics, modified polymers), specialties (e.g., additives as antioxidant), among other products in diverse levels of technology readiness. However, there are challenges to overcome in terms of chemical structure, industrial yields of conversion processes, and the quality of raw material in order to reach the best uses and applications according to the sustainability vision for products and processes. This book deals with the main biochemical pathways of synthesis; advanced analytical techniques; extraction strategies; chemical, biochemical, biological, and physical processing for chemicals and materials; circularity and sustainability aspects for actual and future production chains, allied to life cycle assessment and industrial ecology.
Lignocellulose-Based Bioproducts
by Keikhosro KarimiThis volume provides the technical information required for the production of biofuels and chemicals from lignocellulosic biomass. It starts with a brief overview of the importance, applications, and production processes of different lignocellulosic products. Further chapters review the perspectives of waste-based biofuels and biochemicals; the pretreatment of lignocellulosic biomass for biofuel production; cellulolytic enzyme systems for the hydrolysis of lignocelluloses; and basic and applied aspects of the production of bioethanol, biogas, biohydrogen, and biobutanol from lignocelluloses. This book is recommended for researchers and engineers and particularly students taking biofuel courses at graduate level.
Lignocellulosic Biomass Refining for Second Generation Biofuel Production (Novel Biotechnological Applications for Waste to Value Conversion)
by Ponnusami V.This book compiles research aspects of second generation (2G) biofuel production specifically sourced from lignocellulose biomass with the direction of biorefinery means. It focusses on the valorization of different sources of 2G biofuels and their relative importance. The constituents of lignocelluloses and their potential characteristics, end utilization of biofuel from production are discussed. Different means of treatments of lignocellulose through physical, physio-chemical, microbial, and enzymatic approaches are also included. Features: Describes technological advancements for bioethanol production from lignocellulosic waste. Provides the roadmap for the production and utilization of 2G Biofuels. Introduces the strategic role of metabolic engineering in the development of 2G biofuels. Discusses technological advancements, life cycle assessment, and prospects. Explores the novel potential lignocellulosic biomass for 2G biofuels. This book is aimed at researchers and professionals in renewable energy, biofuel, bioethanol, lignocellulose conversion, fermentation, and chemical engineering.
Lignocellulosic Ethanol Production from a Biorefinery Perspective: Sustainable Valorization of Waste
by Deepansh Sharma Anita SainiThis book provides an overview of the multi-dimensional approach for the production of ethanol from lignocellulosic biomass. The sustainability of this biofuel, the current and future status of the technology and its role in waste valorization are also addressed.Bioethanol from lignocellulosic material has emerged as an alternative to the traditional first-generation bioethanol. The book also discusses various pretreatment methods for effective separation of the various components of lignocellulosic feedstock as well as their advantages, and limitations. It describes the valorization of lignocellulosic waste through the production of bioethanol and emphasizes the significance of waste utilization in managing the production cost of the fuel. Finally, the utilization of genetically engineered plants and microorganisms to increase the conversion efficiency is reviewed.