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Recombinant Proteins in Plants: Methods and Protocols (Methods in Molecular Biology #2480)
by Stefan Schillberg Holger SpiegelThis volume provided methods and protocols on recombinant protein production in different plant systems, downstream processing, and strategies to optimize protein expression. Chapters guide readers through recombinant protein production in important plant systems, protein recovery and purification, different strategies to optimise productivity, cloning and fusion protein approaches, and the regulation and freedom to operate analysis of plant-produced proteins. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Recombinant Proteins in Plants: Methods and Protocols aims to be useful to newcomers and experienced researchers interested in expanding their expertise in the field of plant-based protein production.Chapters 6, 8 and 17 are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.
The Recombinant University: Genetic Engineering and the Emergence of Stanford Biotechnology
by Doogab YiThe advent of recombinant DNA technology in the 1970s was a key moment in the history of both biotechnology and the commercialization of academic research. Doogab Yi’s The Recombinant University draws us deeply into the academic community in the San Francisco Bay Area, where the technology was developed and adopted as the first major commercial technology for genetic engineering. In doing so, it reveals how research patronage, market forces, and legal developments from the late 1960s through the early 1980s influenced the evolution of the technology and reshaped the moral and scientific life of biomedical researchers. Bay Area scientists, university administrators, and government officials were fascinated by and increasingly engaged in the economic and political opportunities associated with the privatization of academic research. Yi uncovers how the attempts made by Stanford scientists and administrators to demonstrate the relevance of academic research were increasingly mediated by capitalistic conceptions of knowledge, medical innovation, and the public interest. Their interventions resulted in legal shifts and moral realignments that encouraged the privatization of academic research for public benefit. The Recombinant University brings to life the hybrid origin story of biotechnology and the ways the academic culture of science has changed in tandem with the early commercialization of recombinant DNA technology.
Recombineering: Methods and Protocols (Methods in Molecular Biology #2479)
by Christopher R. ReischThis volume explores a collection of methods that studies genome editing across a variety of bacteria, phages, and plants. Chapters in this book cover topics such as scarless DNA recombineering of phage in the lysogenic state; HEMSE; Dup-In and DIRex; recombineering in Staphylococcus aureus; and genome editing with Cas9 in lactobacilli. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls.Cutting-edge and thorough, Recombineering: Methods and Protocols is a valuable resource for any researchers interested in learning more about this developing field.
Recommendations for Fatigue Design of Welded Joints and Components (IIW Collection)
by A. F. HobbacherThis book provides a basis for the design and analysis of welded components that are subjected to fluctuating forces, to avoid failure by fatigue. It is also a valuable resource for those on boards or commissions who are establishing fatigue design codes. For maximum benefit, readers should already have a working knowledge of the basics of fatigue and fracture mechanics. The purpose of designing a structure taking into consideration the limit state for fatigue damage is to ensure that the performance is satisfactory during the design life and that the survival probability is acceptable. The latter is achieved by the use of appropriate partial safety factors. This document has been prepared as the result of an initiative by Commissions XIII and XV of the International Institute of Welding (IIW).
Recommendations for Fatigue Design of Welded Joints and Components (IIW Collection)
by A. F. Hobbacher J. BaumgartnerThis book presents an enriched exploration of structural fatigue assessment. Now in its updated form, this comprehensive edition delves into foundational principles while introducing extensive revisions and fresh content. Notable enhancements include a refined discussion on stress determination, an expanded section on fatigue resistance, also for welded thin sheets, and a thorough update of crucial chapters such as fatigue assessment using S-N curves at constant and variable amplitudes as well as practical application of fracture mechanics on fatigue of welded joints. The addition of new chapters on high-frequency mechanical impact (HFMI) treatment, insightful statistical considerations based on IIW recommendations, and practical application examples further distinguish this edition. With updated references and meticulous attention to detail, this new edition emerges as an indispensable resource, offering professionals and enthusiasts a deeper understanding of fatigue assessment in structural engineering. Prepared as the result of an initiative by Commissions XIII and XV of the International Institute of Welding (IIW), this book represents a significant contribution to the field.
Recommended Practice for Corrosion Management of Pipelines in Oil & Gas Production and Transportation (European Federation Of Corrosion Publications)
by Bijan KermaniFirst Published in 2017. Pipeline integrity is key to maintaining operational success, safety and security and minimising harm to the environment. Corrosion is a dominant contributory factor to failures, leaks and integrity threats in pipelines. Therefore, its optimum control within an integrity management framework is paramount for the cost-effective design of facilities and ensuring continued, uninterrupted and safe operations within the expected design life. This recommended practice (RP) is a compendium of current best practices and state-of-the-art knowledge by major operators, engineering contractors and service companies involved in hydrocarbon pro-duction and transportation. The RP incorporates some minimum operational requirements and practices to ensure that when man-aging corrosion in pipelines, fundamental principles are followed. It covers management of corrosion for pipelines carrying hydrocarbons, injection water and/or produced water from design to decommissioning. It is structured to follow the logical steps of a basic corrosion management process and makes references to relevant and available international standards and/or recommended practices. It is intended for use by personnel from the petroleum industry having knowledge of corrosion and materials. It is hoped that this RP will prove to be a key reference document for engineers, suppliers and con-tractors working in the oil and gas industry, paving the way for corrosion-free operation of pipelines with the ultimate goal of improving safety, security and minimising the impact on the environment
Reconceiving the Gene: Seymour Benzer's Adventures in Phage Genetics
by Frederic Lawrence Holmes William C. SummersThis book relates how, between 1954 and 1961, the biologist Seymour Benzer mapped the fine structure of the region of the genome of the bacterial virus known as phage T4. Benzer's accomplishments are widely recognized as a tipping point in mid-twentieth-century molecular biology when the nature of the gene was recast in molecular terms. More often than any other individual, he is considered to have led geneticists from the classical gene into the molecular age. Drawing on Benzer's remarkably complete record of his experiments, his correspondence, and published sources, this book reconstructs how the former physicist initiated his work in phage biology and achieved his landmark investigation. The account of Benzer's creativity as a researcher is a fascinating story that also reveals intriguing aspects common to the scientific enterprise.
Reconceptualizing Early Mathematics Learning
by Joanne T. Mulligan Lyn D. EnglishThis book emanated primarily from concerns that the mathematical capabilities of young children continue to receive inadequate attention in both the research and instructional arenas. Research over many years has revealed that young children have sophisticated mathematical minds and a natural eagerness to engage in a range of mathematical activities. As the chapters in this book attest, current research is showing that young children are developing complex mathematical knowledge and abstract reasoning a good deal earlier than previously thought. A range of studies in prior to school and early school settings indicate that young learners do possess cognitive capacities which, with appropriately designed and implemented learning experiences, can enable forms of reasoning not typically seen in the early years. Although there is a large and coherent body of research on individual content domains such as counting and arithmetic, there have been remarkably few studies that have attempted to describe characteristics of structural development in young students' mathematics. Collectively, the chapters highlight the importance of providing more exciting, relevant, and challenging 21st century mathematics learning for our young students. The chapters provide a broad scope in their topics and approaches to advancing young children's mathematical learning. They incorporate studies that highlight the importance of pattern and structure across the curriculum, studies that target particular content such as statistics, early algebra, and beginning number, and studies that consider how technology and other tools can facilitate early mathematical development. Reconceptualising the professional learning of teachers in promoting young children's mathematics, including a consideration of the role of play, is also addressed.
Reconceptualizing STEM Education: The Central Role of Practices (Teaching and Learning in Science Series)
by Richard A. Duschl Amber S. BismackReconceptualizing STEM Education explores and maps out research and development ideas and issues around five central practice themes: Systems Thinking; Model-Based Reasoning; Quantitative Reasoning; Equity, Epistemic, and Ethical Outcomes; and STEM Communication and Outreach. These themes are aligned with the comprehensive agenda for the reform of science and engineering education set out by the 2015 PISA Framework, the US Next Generation Science Standards and the US National Research Council’s A Framework for K-12 Science Education. The new practice-focused agenda has implications for the redesign of preK-12 education for alignment of curriculum-instruction-assessment; STEM teacher education and professional development; postsecondary, further, and graduate studies; and out-of-school informal education. In each section, experts set out powerful ideas followed by two eminent discussant responses that both respond to and provoke additional ideas from the lead papers. In the associated website highly distinguished, nationally recognized STEM education scholars and policymakers engage in deep conversations and considerations addressing core practices that guide STEM education.
Reconciling Human Needs and Conserving Biodiversity: The Lake Tumba, Democratic Republic of Congo (Environmental History #12)
by Bila-Isia InogwabiniProtected areas have often been defined as the backbones of biodiversity conservation. Protected areas have often been defined as the backbones of biodiversity conservation. However, legitimate demands formulated by countries for their economic development, growing human populations, forest fragmentations, and needs of local communities for sustainable livelihoods are also pressing demands on protected areas, stringently pressuring conservation community to identify means to reconcile long term biodiversity conservation and communities’ livelihoods. Hence, integrating conservation activities within the global framework of economic development of countries with high biodiversity had become part of conservation paradigms. Integrated development as a route to conservation, strict protected areas, community managed areas, etc. have been tried but resulted in debatable outcomes in many ways. The lukewarm nature of these results brought ‘landscape approach’ at the front of biodiversity conservation in Central Africa. Since the late 1990s the landscape approach uses large areas with different functional attributes and shifts foundational biodiversity conservation paradigms. Changes are brought to the role traditionally attributed to local communities, aligning sustainable development with conservation and stretching conservation beyond the confines of traditional protected areas. These three shifts need a holistic approach to respond to different conservation questions. There are only a few instances where the landscape experience has been scientifically documented and lessons learnt drawn into a corpus of knowledge to guide future conservation initiatives across Central Africa. To subjugate one biodiversity conservation landscape as one case study emerged as a matter of urgency to present the potential knowledge acquired throughout the landscape experiment, including leadership and management, processes tried, results (at least partially) achieved, and why such and such other process or management arrangement were been chosen among many other alternatives, etc. The challenges of the implementation of the conservation landscape approach needed also to be documented. This book responds to the majority of these questions; drawing its content from the firsthand field knowledge, it discusses these shifts and documents what has been tried, how successful (unsuccessful) it was, and what lessons learnt from these trials. Theoretical questions such as threat index, and ecological services, etc. are also discussed and gaps in knowledge are identified.
Reconciling the Bible and Science: A Primer on the Two Books of God
by Kirk Blackard Lynn MitchellReconciling the Bible and Science acknowledges the Bible as the word of God, demonstrates why there is no conflict between the Bible and science, and shows readers how to accept both.
Reconfigurable Active and Passive Planar Antennas for Wireless Communication Systems (Signals and Communication Technology)
by Shiban Kishen Koul Rajesh K. SinghThis book presents state-of-the-art trends in reconfigurable active and passive planar antennas and their applications in wireless communication systems operating in the frequency band 5-6 GHz. Due to various key features such as multifunction antenna design, compactness, planar nature, and low cost, these technologies are becoming popular for current and future wireless applications. This book discusses different novel antenna designs and their working principles in detail. The modern and future wireless systems require wideband antennas to accommodate various channels in a single band or in separate bands. The carrier aggregation (CA) has been introduced in the modern wireless systems such as LTE-advanced systems and 5G./6G. In CA, a device can use several channels for transmission and reception. The used channels can exist in the same frequency band (intra-band CA) or in distinct bands (inter-band CA). To accommodate more channels, more bandwidth is required within the operating band. For portable devices, circularly polarized (CP) antennas are more advantageous over linearly polarized antennas since in CP antennas, there is low risk of misalignment and, hence encountering interference. Circularly polarized antenna also provides higher link reliability for the portable devices. To provide high data rates, more bandwidth is needed to accommodate more channels. Various multifunction, compact, and wideband antennas for plethora of applications are addressed in detail in this book. The scope of developing reconfigurable active antennas for application in beam switching, beam steering, wireless charging, security systems, etc., is described. This book concludes by giving glimpses of antenna requirements for future wireless communication systems.
Reconfiguring the World: Nature, God, and Human Understanding from the Middle Ages to Early Modern Europe (Johns Hopkins Introductory Studies in the History of Science)
by Margaret J. OslerChange in human understanding of the natural world during the early modern period marks one of the most important episodes in intellectual history. This era is often referred to as the scientific revolution, but recent scholarship has challenged traditional accounts. Here, in Reconfiguring the World, Margaret J. Osler treats the development of the sciences in Europe from the early sixteenth to the late seventeenth centuries as a complex and multifaceted process.The worldview embedded in modern science is a relatively recent development. Osler aims to convey a nuanced understanding of how the natural world looked to early modern thinkers such as Galileo, Descartes, Boyle, and Newton. She describes investigation and understanding of the natural world in terms that the thinkers themselves would have used. Tracing the views of the natural world to their biblical, Greek, and Arabic sources, Osler demonstrates the impact of the Renaissance recovery of ancient texts, printing, the Protestant Reformation, and the exploration of the New World. She shows how the traditional disciplinary boundaries established by Aristotle changed dramatically during this period and finds the tensions of science and religion expressed as differences between natural philosophy and theology.Far from a triumphalist account, Osler’s story includes false starts and dead ends. Ultimately, she shows how a few gifted students of nature changed the way we see ourselves and the universe.
Reconsideration of Science and Technology I: Reflection on Marx’s View (China Perspectives)
by Liu Dachun Wang Bolu Ding Junqiang Liu YongmouThis volume analyzes Karl Marx’s understanding of science and technology and how it is associated with his focus on the perspective of history and human practice, seeking to illuminate a renewed understanding of science and technology from a Marxist angle. As the first volume of a three-volume set that proposes to reconsider science and technology and explores how the philosophy of science and technology responds to an ever-changing world, the book delves into Marx’s analysis of scientific and technological problems and phenomena across five chapters. The authors explain the positioning of science and technology and the Marxist theoretical perspective of history and practice from which Marx’s views on science and technology derive before an examination of three focal dimensions pertaining to science and technology: productivity, technological alienation and liberty. Not always viewed as central to Marx’s works, discussions on science and technology are often underdeveloped – but a reinterpretation of Marx’s thoughts on the issues corroborates the efficacy of Marxism in terms of understanding today’s world and especially the development of science and technology. The volume will appeal to scholars and students interested in Marxist philosophy, the philosophy of science and technology and topics related to scientific culture.
Reconsideration of Science and Technology II: Scientism and Anti-Scientism (China Perspectives)
by Liu Dachun Ai Zhiqiang Yang HuiliIn reviewing and reconsidering the intellectual history of scientism and antiscientism, the authors assess the process of reasoning and prejudices of these contrasting viewpoints, while discussing the repercussions of scientific hegemony and its contemporary criticism. As the second volume of a three-volume set that proposes to reconsider science and technology and explores how the philosophy of science and technology responds to an ever-changing world, this title focuses on ideological trends centering around scientism and anti-scientism since the 19th century. The six chapters look into the emergence of scientism, instrumental reason, scientific optimism, scientific pessimism, scientific crisis and irrationalism and finally the deconstruction of scientism. The authors provide insight into the connections and biases of these disparate views and critiques, explore the influences of the hegemony of science and contemporary critique of science and evaluate the value of postmodernism and deconstructivism. The volume will appeal to scholars and students interested in the philosophy of science and technology, the ideology of scientism and anti-scientism, modernism and postmodernism, Marxist philosophy and topics related to scientific culture.
Reconsideration of Science and Technology III: An Open World (China Perspectives)
by Liu Dachun Yang Huili Fan ShanshanDrawing on debates from traditional and postmodern thoughts on science and technology, the title builds a new theoretical framework to reconsider science and technology, integrating the opposing viewpoints that either justify science or negate it. As the third volume of a three-volume set that proposes to reconsider science and technology and explores how the philosophy of science and technology responds to an ever-changing world, this final volume seeks to restore the cultural implications of science. Across the six chapters, the authors probe the prospect of a pluralistic scientific culture, including discussions of diversified value choices, the tension between reason and unreason, other binary characteristics of scientific knowledge, including objectivity and uniqueness, universality and locality, as well as the loss, awakening and reconstruction of scientific culture. The authors call for a transformation of scientific culture from a dominant culture to an affirmative one and envision a free and open world of science and technology. The volume will appeal to scholars and students interested in the philosophy of science and technology, the ideology of scientism and anti-scientism, modernism and postmodernism, Marxist philosophy and topics related to scientific culture.
Reconsidering Historical Epistemology: French and Anglophone Styles in History and Philosophy of Science (Studies in History and Philosophy of Science #61)
by Matteo VagelliThis book explores the key conceptual stakes underpinning historical epistemology. The strong Anglophone interest in historical epistemology, since at least the 1990s, is typically attributed to its simultaneously philosophical and historical synthetic approach to the study of science. Yet this account, considered by critics to be an unreflective assumption, has prevented historical epistemology from developing a clear understanding and definition, especially regarding how precisely historical and philosophical reflections on the sciences should be combined. Thus, this book uniquely analyses how the problems and tensions inherent to the “contemporary” phase of historical epistemology can be clarified by reference to the “classical” French phase. The archaeological method of Michel Foucault, which draws on and transforms fundamental insights by Gaston Bachelard and Georges Canguilhem, is used to exert an enduring influence on the field—especially through the work of Ian Hacking and his philosophical cum historical analyses of “styles of scientific reasoning”. Though this book is of great value to academic specialists and graduate students, the fact it addresses questions broad in scope ensures it is also relevant to a range of scholars in many disciplines and will provoke discussion among those interested in foundational issues in history and philosophy of science.
Reconsidering Sputnik: Forty Years Since the Soviet Satellite (Routledge Studies in the History of Science, Technology and Medicine #11)
by Robert W. Smith Roger D. Launius John M. LogsdonThis book explores Russia's stunning success of ushering in the space age by launching Sputnik and beating the United States into space. It also examines the formation of NASA, the race for human exploration of the moon, the reality of global satellite communications, and a new generation of scientific spacecraft that began exploring the universe. An introductory essay by Pulitzer Prize winner Walter A. McDougall sets the context for Sputnik and its significance at the end of the twentieth century.
Reconsidering the Limits to Growth: A Report to the Russian Association of the Club of Rome (World-Systems Evolution and Global Futures)
by Viktor Sadovnichy Askar Akaev Ilya Ilyin Sergey Malkov Leonid Grinin Andrey KorotayevEchoing the famous "The Limits to Growth" report from 1972, this edited volume analyses the changes that the World System has undergone to the present, on the fiftieth anniversary of the original report. During the past fifty years, both the concept and understanding of these limits have significantly changed. This book highlights that the evolution of the World System has approached a new critical milestone, moving into a fundamentally new phase of historical development, when the old economic and social technologies no longer work as efficiently as before or even begin to function counterproductively, which leads the World System into a systemic crisis. The book discusses the transition of human society to a new phase state, the shape of which has not yet been determined. New approaches are needed for both, for the analysis of the global situation, and for forecasts. The book is based on an integrated approach including the world-systems, historical and evolutionary perspectives, as well as a systematic view of society, in which changes in one subsystem cause transformations in others. Through mathematical modeling, it defines the main vectors of transformations of the World System; makes a detailed forecast of the development of all the main subsystems of the society and the World System, while presenting horizons of changes from short-term to ultra-long-term; and presents different development scenarios as well as recommendations on how to achieve a transition to the most favorable scenario. The book will appeal to members and followers of the Club of Rome, policy-makers, as well as to scholars from various disciplines interested in a better understanding of the World System evolution, global futures, development studies, climate change, and future societies.
Reconstructing Earth: Technology and Environment in the Age of Humans
by Braden AllenbyThe Earth's biological, chemical, and physical systems are increasingly shaped by the activities of one species-ours. In our decisions about everything from manufacturing technologies to restaurant menus, the health of the planet has become a product of human choice. Environmentalism, however, has largely failed to adapt to this new reality.Reconstructing Earth offers seven essays that explore ways of developing a new, more sophisticated approach to the environment that replaces the fantasy of recovering pristine landscapes with a more grounded viewpoint that can foster a better relationship between humans and the planet. Braden Allenby, a lawyer with degrees in both engineering and environmental studies, explains the importance of technological choice, and how that factor is far more significant in shaping our environment (in ways both desirable and not) than environmental controls. Drawing on his varied background and experience in both academia and the corporate world, he describes the emerging field of "earth systems engineering and management," which offers an integrated approach to understanding and managing complex human/natural systems that can serve as a basis for crafting better, more lasting solutions to widespread environmental problems.Reconstructing Earth not only critiques dysfunctional elements of current environmentalism but establishes a foundation for future environmental management and progress, one built on an understanding of technological evolution and the cultural systems that support modern technologies. Taken together, the essays offer an important means of developing an environmentalism that is robust and realistic enough to address the urgent realities of our planet.
Reconstructing Human-Landscape Interactions - Volume 1
by Aileen C. Elliott Nalini Torres Brett T. MclaurinThe Holocene is unique when compared to earlier geological time in that humans begin to alter and manipulate the natural environment to their own needs. Domestication of crops and animals and the resultant intensification of agriculture lead to profound changes in the impact humans have on the environment. Conversely, as human populations began to increase geologic and climatic factors begin to have a greater impact on civilizations. To understand and reconstruct the complex interplay between humans and the environment over the past ten thousand years requires examination of multiple differing but interconnected aspects of the environment and involves geomorphology, paleoecology, geoarchaeology and paleoclimatology. These Springer Briefs volumes examine the dynamic interplay between humans and the natural environment as reconstructed by the many and varied sub-fields of the Earth Sciences.
Reconstructing Identity After Brain Injury: A Search for Hope and Optimism After Maxillofacial and Neurosurgery (After Brain Injury: Survivor Stories)
by Stijn GeerinckReconstructing Identity After Brain Injury tells the remarkable story of Stijn Geerinck and his journey from road traffic accident to recovery. After he was hit by a drunk driver whilst cycling, Stijn suffered a traumatic brain injury and had to undergo drastic maxillofacial and neurosurgery. In his own words, this book narrates Stijn’s difficult recovery, focusing on the physical, medical, mental, social and financial changes he had to endure. It lays the groundwork for coping with permanent impairment resulting from TBI, including lifelong lesions and the irreversible physical changes. The testimonial narrative is complemented with philosophical insights, providing key philosopher’s reflections on the experience of brain injury. Stijn also explores the essential human characteristics of resilience, fighting spirit, emotionality, despair, vulnerability, hope, depression, optimism, anxiety, rationality, focus, anger and love, as he looks at the impact of his brain injury and resulting disfigurement on his masculine identity. It is essential reading for any professional involved in neuropsychological rehabilitation, and all those touched by this condition.
Reconstructing the Past: Parsimony, Evolution, and Inference
by Elliott SoberReconstructing the Past seeks to clarify and help resolve the vexing methodological issues that arise when biologists try to answer such questions as whether human beings are more closely related to chimps than they are to gorillas. It explores the case for considering the philosophical idea of simplicity/parsimony as a useful principle for evaluating taxonomic theories of evolutionary relationships.For the past two decades, evolutionists have been vigorously debating the appropriate methods that should be used in systematics, the field that aims at reconstructing phylogenetic relationships among species. This debate over phylogenetic inference, Elliott Sober observes, raises broader questions of hypothesis testing and theory evaluation that run head on into long standing issues concerning simplicity/parsimony in the philosophy of science.Sober treats the problem of phylogenetic inference as a detailed case study in which the philosophical idea of simplicity/parsimony can be tested as a principle of theory evaluation. Bringing together philosophy and biology, as well as statistics, Sober builds a general framework for understanding the circumstances in which parsimony makes sense as a tool of phylogenetic inference. Along the way he provides a detailed critique of parsimony in the biological literature, exploring the strengths and limitations of both statistical and nonstatistical cladistic arguments.
Reconstructing the Tree of Life: Taxonomy and Systematics of Species Rich Taxa
by Trevor R. Hodkinson John A. N. ParnellTo document the world's diversity of species and reconstruct the tree of life we need to undertake some simple but mountainous tasks. Most importantly, we need to tackle species rich groups. We need to collect, name, and classify them, and then position them on the tree of life. We need to do this systematically across all groups of organisms and b
Reconstruction of Macroscopic Maxwell Equations
by Kikuo ChoThis book presents a logically more complete form of macroscopic Maxwell equations than the conventional ones by applying long wavelength approximation to microscopic nonlocal theory. This scheme requires only one susceptibility tensor describing electric and magnetic polarizations together with their mutual interference. The quantum mechanical expression of the susceptibility covers both chiral and achiral symmetry. Only in the absence of chiral symmetry, this reduces to the conventional form, under the additional condition of using magnetic susceptibility defined with respect to, not H, but B. This scheme solves various problems inherent to the conventional scheme of Maxwell equations.