Author: Kamal K. Kar
Publisher: Springer Nature
ISBN: 3030683648
Category : Technology & Engineering
Languages : en
Pages : 420
Book Description
This book covers the selection of nanocomposite supercapacitor materials. It describes the most important criteria behind the selection of materials for the electrode, electrolytes, separator and current collectors, which comprise the key components of supercapacitors for advanced energy storage. It discusses the influence on each material on the unique electrochemical properties of nanocomposite supercapacitors with respect to their energy storage mechanism and stability under extreme and unpredictable conditions. This book is part of the Handbook of Nanocomposite Supercapacitor Materials. Supercapacitors have emerged as promising devices for electrochemical energy storage, playing an important role in energy harvesting for meeting the current demands of increasing global energy consumption. The handbook covers the materials science and engineering of nanocomposite supercapacitors, ranging from their general characteristics and performance to materials selection, design and construction. Covering both fundamentals and recent developments, this handbook serves a readership encompassing students, professionals and researchers throughout academia and industry, particularly in the fields of materials chemistry, electrochemistry, and energy storage and conversion. It is ideal as a reference work and primary resource for any introductory senior-level undergraduate or beginning graduate course covering supercapacitors.
Handbook of Nanocomposite Supercapacitor Materials III
Author: Kamal K. Kar
Publisher: Springer Nature
ISBN: 3030683648
Category : Technology & Engineering
Languages : en
Pages : 420
Book Description
This book covers the selection of nanocomposite supercapacitor materials. It describes the most important criteria behind the selection of materials for the electrode, electrolytes, separator and current collectors, which comprise the key components of supercapacitors for advanced energy storage. It discusses the influence on each material on the unique electrochemical properties of nanocomposite supercapacitors with respect to their energy storage mechanism and stability under extreme and unpredictable conditions. This book is part of the Handbook of Nanocomposite Supercapacitor Materials. Supercapacitors have emerged as promising devices for electrochemical energy storage, playing an important role in energy harvesting for meeting the current demands of increasing global energy consumption. The handbook covers the materials science and engineering of nanocomposite supercapacitors, ranging from their general characteristics and performance to materials selection, design and construction. Covering both fundamentals and recent developments, this handbook serves a readership encompassing students, professionals and researchers throughout academia and industry, particularly in the fields of materials chemistry, electrochemistry, and energy storage and conversion. It is ideal as a reference work and primary resource for any introductory senior-level undergraduate or beginning graduate course covering supercapacitors.
Publisher: Springer Nature
ISBN: 3030683648
Category : Technology & Engineering
Languages : en
Pages : 420
Book Description
This book covers the selection of nanocomposite supercapacitor materials. It describes the most important criteria behind the selection of materials for the electrode, electrolytes, separator and current collectors, which comprise the key components of supercapacitors for advanced energy storage. It discusses the influence on each material on the unique electrochemical properties of nanocomposite supercapacitors with respect to their energy storage mechanism and stability under extreme and unpredictable conditions. This book is part of the Handbook of Nanocomposite Supercapacitor Materials. Supercapacitors have emerged as promising devices for electrochemical energy storage, playing an important role in energy harvesting for meeting the current demands of increasing global energy consumption. The handbook covers the materials science and engineering of nanocomposite supercapacitors, ranging from their general characteristics and performance to materials selection, design and construction. Covering both fundamentals and recent developments, this handbook serves a readership encompassing students, professionals and researchers throughout academia and industry, particularly in the fields of materials chemistry, electrochemistry, and energy storage and conversion. It is ideal as a reference work and primary resource for any introductory senior-level undergraduate or beginning graduate course covering supercapacitors.
Handbook of Nanocomposite Supercapacitor Materials I
Author: Kamal K. Kar
Publisher: Springer Nature
ISBN: 303043009X
Category : Technology & Engineering
Languages : en
Pages : 378
Book Description
This book delivers a comprehensive overview of the characteristics of several types of materials that are widely used in the current era of supercapacitors; namely, architectured carbon materials, transition metal oxides and conducting polymers. It provides readers with a complete introduction to the fundamentals of supercapacitors, including the development of new electrolytes and electrodes, while highlighting the advantages, challenges, applications and future of these materials. This book is part of the Handbook of Nanocomposite Supercapacitor Materials. Supercapacitors have emerged as promising devices for electrochemical energy storage, playing an important role in energy harvesting for meeting the current demands of increasing global energy consumption. The handbook covers the materials science and engineering of nanocomposite supercapacitors, ranging from their general characteristics and performance to materials selection, design and construction. Covering both fundamentals and recent developments, this handbook serves a readership encompassing students, professionals and researchers throughout academia and industry, particularly in the fields of materials chemistry, electrochemistry, and energy storage and conversion. It is ideal as a reference work and primary resource for any introductory senior-level undergraduate or beginning graduate course covering supercapacitors.
Publisher: Springer Nature
ISBN: 303043009X
Category : Technology & Engineering
Languages : en
Pages : 378
Book Description
This book delivers a comprehensive overview of the characteristics of several types of materials that are widely used in the current era of supercapacitors; namely, architectured carbon materials, transition metal oxides and conducting polymers. It provides readers with a complete introduction to the fundamentals of supercapacitors, including the development of new electrolytes and electrodes, while highlighting the advantages, challenges, applications and future of these materials. This book is part of the Handbook of Nanocomposite Supercapacitor Materials. Supercapacitors have emerged as promising devices for electrochemical energy storage, playing an important role in energy harvesting for meeting the current demands of increasing global energy consumption. The handbook covers the materials science and engineering of nanocomposite supercapacitors, ranging from their general characteristics and performance to materials selection, design and construction. Covering both fundamentals and recent developments, this handbook serves a readership encompassing students, professionals and researchers throughout academia and industry, particularly in the fields of materials chemistry, electrochemistry, and energy storage and conversion. It is ideal as a reference work and primary resource for any introductory senior-level undergraduate or beginning graduate course covering supercapacitors.
Handbook of Nanocomposite Supercapacitor Materials II
Author: Kamal K. Kar
Publisher: Springer Nature
ISBN: 3030523594
Category : Technology & Engineering
Languages : en
Pages : 511
Book Description
This book covers the performance aspects of nanocomposite supercapacitor materials based on transition metal oxides, activated carbon, carbon nanotubes, carbon nanofibers, graphene and conducting polymers. It compares the performance of simple electrode materials versus binary and ternary composites, while highlighting the advantages and challenges of different supercapacitor electrode materials. This book is part of the Handbook of Nanocomposite Supercapacitor Materials. Supercapacitors have emerged as promising devices for electrochemical energy storage, playing an important role in energy harvesting for meeting the current demands of increasing global energy consumption. The handbook covers the materials science and engineering of nanocomposite supercapacitors, ranging from their general characteristics and performance to materials selection, design and construction. Covering both fundamentals and recent developments, this handbook serves a readership encompassing students, professionals and researchers throughout academia and industry, particularly in the fields of materials chemistry, electrochemistry, and energy storage and conversion. It is ideal as a reference work and primary resource for any introductory senior-level undergraduate or beginning graduate course covering supercapacitors.
Publisher: Springer Nature
ISBN: 3030523594
Category : Technology & Engineering
Languages : en
Pages : 511
Book Description
This book covers the performance aspects of nanocomposite supercapacitor materials based on transition metal oxides, activated carbon, carbon nanotubes, carbon nanofibers, graphene and conducting polymers. It compares the performance of simple electrode materials versus binary and ternary composites, while highlighting the advantages and challenges of different supercapacitor electrode materials. This book is part of the Handbook of Nanocomposite Supercapacitor Materials. Supercapacitors have emerged as promising devices for electrochemical energy storage, playing an important role in energy harvesting for meeting the current demands of increasing global energy consumption. The handbook covers the materials science and engineering of nanocomposite supercapacitors, ranging from their general characteristics and performance to materials selection, design and construction. Covering both fundamentals and recent developments, this handbook serves a readership encompassing students, professionals and researchers throughout academia and industry, particularly in the fields of materials chemistry, electrochemistry, and energy storage and conversion. It is ideal as a reference work and primary resource for any introductory senior-level undergraduate or beginning graduate course covering supercapacitors.
Handbook of Nanocomposite Supercapacitor Materials IV
Author: Kamal K. Kar
Publisher: Springer Nature
ISBN: 3031237013
Category : Technology & Engineering
Languages : en
Pages : 444
Book Description
This book covers next-generation nanocomposite supercapacitor materials. It deals with a wide range of emerging and sustainable supercapacitors based on, e.g., low-dimensional materials including transition metal oxides, carbons, Mxenes, etc., and metal-organic frameworks. Additionally, it features up-to-date coverage of advanced supercapacitors such as 3D printing, atomic layer deposition, recycling, quantum, on-chip, shape memory, self-healing, and micro-scale supercapacitors. This book is part of the Handbook of Nanocomposite Supercapacitor Materials. Supercapacitors have emerged as promising devices for electrochemical energy storage, playing an important role in energy harvesting for meeting the current demands of increasing global energy consumption. The handbook covers the materials science and engineering of nanocomposite supercapacitors, ranging from their general characteristics and performance to materials selection, design and construction. Covering both fundamentals and recent developments, this handbook serves a readership encompassing students, professionals and researchers throughout academia and industry, particularly in the fields of materials chemistry, electrochemistry, and energy storage and conversion. It is ideal as a reference work and primary resource for any introductory senior-level undergraduate or beginning graduate course covering supercapacitors.
Publisher: Springer Nature
ISBN: 3031237013
Category : Technology & Engineering
Languages : en
Pages : 444
Book Description
This book covers next-generation nanocomposite supercapacitor materials. It deals with a wide range of emerging and sustainable supercapacitors based on, e.g., low-dimensional materials including transition metal oxides, carbons, Mxenes, etc., and metal-organic frameworks. Additionally, it features up-to-date coverage of advanced supercapacitors such as 3D printing, atomic layer deposition, recycling, quantum, on-chip, shape memory, self-healing, and micro-scale supercapacitors. This book is part of the Handbook of Nanocomposite Supercapacitor Materials. Supercapacitors have emerged as promising devices for electrochemical energy storage, playing an important role in energy harvesting for meeting the current demands of increasing global energy consumption. The handbook covers the materials science and engineering of nanocomposite supercapacitors, ranging from their general characteristics and performance to materials selection, design and construction. Covering both fundamentals and recent developments, this handbook serves a readership encompassing students, professionals and researchers throughout academia and industry, particularly in the fields of materials chemistry, electrochemistry, and energy storage and conversion. It is ideal as a reference work and primary resource for any introductory senior-level undergraduate or beginning graduate course covering supercapacitors.
Handbook of Fly Ash
Author: Kamal K. Kar
Publisher: Butterworth-Heinemann
ISBN: 0128176873
Category : Technology & Engineering
Languages : en
Pages : 869
Book Description
The drive to develop more sustainable materials has made fly ash a valuable raw material in many different applications. Comprehensive and authoritative, Handbook of Fly Ash highlights the latest research efforts to develop the properties of fly ash to maximum utility while safeguarding the environment. This book takes an interdisciplinary approach to the research into the classification and compositions of various types of fly ash, such as bottom ash and boiler slag, special classes of fly ash, and their sources around the globe. This is followed by a discussion of fly ash-reinforced composites, such as elastomer-based composites and metal matrix composites. This book also covers a wide range of applications of fly ash in cement, concrete, bricks and blocks, road construction, wastewater treatment, and scrubber sludge solidification. - Highlights the recent developments in the utilization of fly ash including its preparation, functionalization, properties, and handling. - Places a focus on a wide variety of fly ash applications including recent innovations, such as alkali-activated binder, polypropylene composite, and geopolymer concrete. - Includes comprehensive coverage of the characteristics of fly ash with a particular focus on health hazards if it is not properly disposed. - Discusses fly ash-reinforced composites, such as polymer/elastomer-based composites and metal matrix composites.
Publisher: Butterworth-Heinemann
ISBN: 0128176873
Category : Technology & Engineering
Languages : en
Pages : 869
Book Description
The drive to develop more sustainable materials has made fly ash a valuable raw material in many different applications. Comprehensive and authoritative, Handbook of Fly Ash highlights the latest research efforts to develop the properties of fly ash to maximum utility while safeguarding the environment. This book takes an interdisciplinary approach to the research into the classification and compositions of various types of fly ash, such as bottom ash and boiler slag, special classes of fly ash, and their sources around the globe. This is followed by a discussion of fly ash-reinforced composites, such as elastomer-based composites and metal matrix composites. This book also covers a wide range of applications of fly ash in cement, concrete, bricks and blocks, road construction, wastewater treatment, and scrubber sludge solidification. - Highlights the recent developments in the utilization of fly ash including its preparation, functionalization, properties, and handling. - Places a focus on a wide variety of fly ash applications including recent innovations, such as alkali-activated binder, polypropylene composite, and geopolymer concrete. - Includes comprehensive coverage of the characteristics of fly ash with a particular focus on health hazards if it is not properly disposed. - Discusses fly ash-reinforced composites, such as polymer/elastomer-based composites and metal matrix composites.
Supercapacitors
Author: Syam G. Krishnan
Publisher: Elsevier
ISBN: 0443154775
Category : Technology & Engineering
Languages : en
Pages : 435
Book Description
Supercapacitors: Materials, Design, and Commercialization provides a comprehensive overview of the latest research trends and opportunities in supercapacitors, and particularly in terms of novel materials and electrolytes.The book will address the transformation in supercapacitive technology from double layer capacitance to battery-type capacitance, providing a clear understanding of the conceptual differences between various charge storage processes for supercapacitors, charge storage based on materials and electrolytes, and calculation for capacitance for these charge processes. Detailed chapters discuss recent developments in materials, such as carbons, chalcogenides, MXene and phosphorene, various polymer nanocomposites, and polyoxometalates for supercapacitors. This is followed by in-depth coverage of electrolytes, including the evolution of electrolytes from aqueous to water-in-salt electrolytes and their role in improving the energy density of supercapacitors. The final part of the book examines the role of artificial intelligence in the design of supercapacitors, and latest developments in translating novel supercapacitor technologies from laboratory-scale research to a commercialization.This is a valuable resource for advanced students, researchers, and scientists in the fields of energy storage, electrical engineering, materials science, and chemical engineering, as well as engineers and R&D personnel working with supercapacitors or energy storage in an industrial setting. - Brings together the latest developments in supercapacitor materials and electrolytes - Discusses cutting-edge charge storage concepts and methods for supercapacitors - Addresses the role of machine learning and the scale-up from laboratory to commercialization
Publisher: Elsevier
ISBN: 0443154775
Category : Technology & Engineering
Languages : en
Pages : 435
Book Description
Supercapacitors: Materials, Design, and Commercialization provides a comprehensive overview of the latest research trends and opportunities in supercapacitors, and particularly in terms of novel materials and electrolytes.The book will address the transformation in supercapacitive technology from double layer capacitance to battery-type capacitance, providing a clear understanding of the conceptual differences between various charge storage processes for supercapacitors, charge storage based on materials and electrolytes, and calculation for capacitance for these charge processes. Detailed chapters discuss recent developments in materials, such as carbons, chalcogenides, MXene and phosphorene, various polymer nanocomposites, and polyoxometalates for supercapacitors. This is followed by in-depth coverage of electrolytes, including the evolution of electrolytes from aqueous to water-in-salt electrolytes and their role in improving the energy density of supercapacitors. The final part of the book examines the role of artificial intelligence in the design of supercapacitors, and latest developments in translating novel supercapacitor technologies from laboratory-scale research to a commercialization.This is a valuable resource for advanced students, researchers, and scientists in the fields of energy storage, electrical engineering, materials science, and chemical engineering, as well as engineers and R&D personnel working with supercapacitors or energy storage in an industrial setting. - Brings together the latest developments in supercapacitor materials and electrolytes - Discusses cutting-edge charge storage concepts and methods for supercapacitors - Addresses the role of machine learning and the scale-up from laboratory to commercialization
Handbook of Supercapacitor Materials
Author: Rajender Boddula
Publisher: John Wiley & Sons
ISBN: 3527346872
Category : Technology & Engineering
Languages : en
Pages : 356
Book Description
Introduction to Electromagnetic Waves with Maxwell???s Equations Discover an innovative and fresh approach to teaching classical electromagnetics at a foundational level Introduction to Electromagnetic Waves with Maxwell???s Equations delivers an accessible and practical approach to teaching the well-known topics all electromagnetics instructors must include in their syllabus. Based on the author???s decades of experience teaching the subject, the book is carefully tuned to be relevant to an audience of engineering students who have already been exposed to the basic curricula of linear algebra and multivariate calculus. Forming the backbone of the book, Maxwell???s equations are developed step-by-step in consecutive chapters, while related electromagnetic phenomena are discussed simultaneously. The author presents accompanying mathematical tools alongside the material provided in the book to assist students with retention and comprehension. The book contains over 100 solved problems and examples with stepwise solutions offered alongside them. An accompanying website provides readers with additional problems and solutions. Readers will also benefit from the inclusion of: A thorough introduction to preliminary concepts in the field, including scalar and vector fields, cartesian coordinate systems, basic vector operations, orthogonal coordinate systems, and electrostatics, magnetostatics, and electromagnetics An exploration of Gauss??? Law, including integral forms, differential forms, and boundary conditions A discussion of Ampere???s Law, including integral and differential forms and Stoke???s Theorem An examination of Faraday???s Law, including integral and differential forms and the Lorentz Force Law Perfect for third- and fourth-year undergraduate students in electrical engineering, mechanical engineering, applied maths, physics, and computer science, Introduction to Electromagnetic Waves with Maxwell???s Equations will also earn a place in the libraries of graduate and postgraduate students in any STEM program with applications in electromagnetics.
Publisher: John Wiley & Sons
ISBN: 3527346872
Category : Technology & Engineering
Languages : en
Pages : 356
Book Description
Introduction to Electromagnetic Waves with Maxwell???s Equations Discover an innovative and fresh approach to teaching classical electromagnetics at a foundational level Introduction to Electromagnetic Waves with Maxwell???s Equations delivers an accessible and practical approach to teaching the well-known topics all electromagnetics instructors must include in their syllabus. Based on the author???s decades of experience teaching the subject, the book is carefully tuned to be relevant to an audience of engineering students who have already been exposed to the basic curricula of linear algebra and multivariate calculus. Forming the backbone of the book, Maxwell???s equations are developed step-by-step in consecutive chapters, while related electromagnetic phenomena are discussed simultaneously. The author presents accompanying mathematical tools alongside the material provided in the book to assist students with retention and comprehension. The book contains over 100 solved problems and examples with stepwise solutions offered alongside them. An accompanying website provides readers with additional problems and solutions. Readers will also benefit from the inclusion of: A thorough introduction to preliminary concepts in the field, including scalar and vector fields, cartesian coordinate systems, basic vector operations, orthogonal coordinate systems, and electrostatics, magnetostatics, and electromagnetics An exploration of Gauss??? Law, including integral forms, differential forms, and boundary conditions A discussion of Ampere???s Law, including integral and differential forms and Stoke???s Theorem An examination of Faraday???s Law, including integral and differential forms and the Lorentz Force Law Perfect for third- and fourth-year undergraduate students in electrical engineering, mechanical engineering, applied maths, physics, and computer science, Introduction to Electromagnetic Waves with Maxwell???s Equations will also earn a place in the libraries of graduate and postgraduate students in any STEM program with applications in electromagnetics.
Polymer Nanocomposites in Supercapacitors
Author: Soney C George
Publisher: CRC Press
ISBN: 1000718476
Category : Technology & Engineering
Languages : en
Pages : 284
Book Description
Supercapacitors are energy storing devices, gaining great scientific attention due to their excellent cycling life, charge-discharge stability, energy, and power density. The central theme of this book is to review the multiple applications of polymer nanocomposites in supercapacitors in a comprehensive manner, including discussions pertaining to various unresolved issues and new challenges in the subject area. It illustrates polymer nanocomposite preparation and working mechanisms as electrodes, binders, separators, and electrolytes. This edited volume also explains different components of supercapacitors, including theory, modelling, and simulation aspects. Features: Covers the synthesis and properties of polymer nanocomposites for varied usage. Explains roles of different types of nanofillers in polymeric systems for developing supercapacitors. Highlights theory, modelling, and simulation of polymeric supercapacitors. Gives an illustrative overview of the multiple applications of polymers and their nanocomposites. Includes graphene, CNT, nanoparticle, carbon, and nano-cellulose-based supercapacitors. This book is aimed at graduate students and researchers in materials science, polymer science, polymer physics, electrochemistry, electronic materials, energy management, electronic engineering, polymer engineers, and chemical engineering.
Publisher: CRC Press
ISBN: 1000718476
Category : Technology & Engineering
Languages : en
Pages : 284
Book Description
Supercapacitors are energy storing devices, gaining great scientific attention due to their excellent cycling life, charge-discharge stability, energy, and power density. The central theme of this book is to review the multiple applications of polymer nanocomposites in supercapacitors in a comprehensive manner, including discussions pertaining to various unresolved issues and new challenges in the subject area. It illustrates polymer nanocomposite preparation and working mechanisms as electrodes, binders, separators, and electrolytes. This edited volume also explains different components of supercapacitors, including theory, modelling, and simulation aspects. Features: Covers the synthesis and properties of polymer nanocomposites for varied usage. Explains roles of different types of nanofillers in polymeric systems for developing supercapacitors. Highlights theory, modelling, and simulation of polymeric supercapacitors. Gives an illustrative overview of the multiple applications of polymers and their nanocomposites. Includes graphene, CNT, nanoparticle, carbon, and nano-cellulose-based supercapacitors. This book is aimed at graduate students and researchers in materials science, polymer science, polymer physics, electrochemistry, electronic materials, energy management, electronic engineering, polymer engineers, and chemical engineering.
Electrochemical Membrane Technology
Author: Adewale Giwa
Publisher: Elsevier
ISBN: 0443140065
Category : Technology & Engineering
Languages : en
Pages : 525
Book Description
Electrochemical Membrane Technology will have a strong impact on electrochemical and membrane separation research in the future and will contribute significantly to academic training and the well-being of human society. This book will include a comprehensive discussion of SWOT analysis of each electrochemical membrane technology, and the discussion of energy production from electrochemical membrane technologies in a separate chapter. This will be based theoretical and experimental studies on electrochemical membrane technologies and applications. Written for chemical and environmental engineers, professors and other university teachers, research scientists, graduate students, water treatment managers, research institutions, and Research and Development departments of industries involved in sustainable water treatment and coproduction of valuable products from water treatment technologies. - Provides comparative analysis of energy production from electrochemical membrane technologies and a comprehensive analysis of the recent advances in these technologies - Discusses the strengths, weaknesses, opportunities, and threats/challenges (SWOT) of each electrochemical membrane technology - Addresses the importance energy co-production
Publisher: Elsevier
ISBN: 0443140065
Category : Technology & Engineering
Languages : en
Pages : 525
Book Description
Electrochemical Membrane Technology will have a strong impact on electrochemical and membrane separation research in the future and will contribute significantly to academic training and the well-being of human society. This book will include a comprehensive discussion of SWOT analysis of each electrochemical membrane technology, and the discussion of energy production from electrochemical membrane technologies in a separate chapter. This will be based theoretical and experimental studies on electrochemical membrane technologies and applications. Written for chemical and environmental engineers, professors and other university teachers, research scientists, graduate students, water treatment managers, research institutions, and Research and Development departments of industries involved in sustainable water treatment and coproduction of valuable products from water treatment technologies. - Provides comparative analysis of energy production from electrochemical membrane technologies and a comprehensive analysis of the recent advances in these technologies - Discusses the strengths, weaknesses, opportunities, and threats/challenges (SWOT) of each electrochemical membrane technology - Addresses the importance energy co-production
Nanostructured Materials for Supercapacitors
Author: Sabu Thomas
Publisher: Springer Nature
ISBN: 3030993027
Category : Technology & Engineering
Languages : en
Pages : 642
Book Description
This book covers nanostructure materials for application as supercapacitors. It highlights the properties that make them ideal for energy storage applications. It reports approaches on their electronic, electrical, thermal properties to increase their specific surfaces in order to improve their electrical storage capacities. This book consolidates information on synthesis, characterization and application for supercapacitors with detailed characterization, mechanistic approaches and theoretical consideration. The progress in experimental and theoretical studies on various properties of nanomaterials and its polymer and other composites are described in detail.
Publisher: Springer Nature
ISBN: 3030993027
Category : Technology & Engineering
Languages : en
Pages : 642
Book Description
This book covers nanostructure materials for application as supercapacitors. It highlights the properties that make them ideal for energy storage applications. It reports approaches on their electronic, electrical, thermal properties to increase their specific surfaces in order to improve their electrical storage capacities. This book consolidates information on synthesis, characterization and application for supercapacitors with detailed characterization, mechanistic approaches and theoretical consideration. The progress in experimental and theoretical studies on various properties of nanomaterials and its polymer and other composites are described in detail.