Measurement of LEDs
| Author | : |
| Publisher | : |
| Total Pages | : 24 |
| Release | : 1997 |
| Genre | : Light emitting diodes |
| ISBN | : 9783900734848 |
Measurement Of Leds
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Handbook of LED and SSL Metrology
| Author | : Günther Leschhorn |
| Publisher | : |
| Total Pages | : 144 |
| Release | : 2017-02-24 |
| Genre | : |
| ISBN | : 9783864606434 |
Measuring Stress
| Author | : Sheldon Cohen |
| Publisher | : Oxford University Press |
| Total Pages | : 256 |
| Release | : 1997-12-11 |
| Genre | : Psychology |
| ISBN | : 0190283882 |
Measuring Stress is the definitive resource for health and social scientists interested in assessing stress in humans. With contributions from leading experts, this work provides for the first time a unified conceptual overview of the intricate relationship between stress and a variety of disorders. Its interdisciplinary approach to the selection of appropriate environmental, psychological, and biological measures includes comprehensive evaluations and practical advice regarding a wide range of measurement approaches. For environmental stress, techniques such as checklists and interviews that measure life event, daily event, and chronic stress are discussed. An analysis of psychological measurements includes methods for assessing stress appraisal and affective response. Neuroendocrine, cardiovascular, and immune measures are examined as important biological stress assessments. Contributors also uncover the conceptual underpinnings of each approach as well as the various costs and benefits of available assessment techniques. Reflecting the diversity of theoretical conceptions of stress, Measuring Stress masterfully provides integrative, incisive guidelines that will prove invaluable to students, clinicians, and researchers in health and social psychology, medicine, nursing, epidemiology, sociology, and psychiatry.
The Fundamentals and Applications of Light-Emitting Diodes
| Author | : Govind B. Nair |
| Publisher | : Woodhead Publishing |
| Total Pages | : 286 |
| Release | : 2020-07-09 |
| Genre | : Technology & Engineering |
| ISBN | : 0128231610 |
The Fundamentals and Applications of Light-Emitting Diodes: The Revolution in the Lighting Industry examines the evolution of LEDs, including a review of the luminescence process and background on solid state lighting. The book emphasizes phosphor-converted LEDs that are based on inorganic phosphors but explores different types of LEDs based on inorganic, organic, quantum dots, perovskite-structured materials, and biomaterials. A detailed description is included about the diverse applications of LEDs in fields such as lighting, displays, horticulture, biomedicine, and digital communication, as well as challenges that must be solved before using LEDs in commercial applications. Traditional light sources are fast being replaced by light-emitting diodes (LEDs). The fourth generation of lighting is completely dominated by LED luminaires. Apart from lighting, LEDs have extended their hold on other fields, such as digital communications, horticulture, medicine, space research, art and culture, display devices, and entertainment. The technological promises offered by LEDs have elevated them as front-runners in the lighting industry. - Presents a concise overview of different types of light-emitting diodes (LEDs) based on inorganic phosphors, organic materials, quantum dots, perovskite-structured materials, and biomaterials - Includes a discussion of current and emerging applications in lighting, communications, horticulture, and medical fields - Addresses fundamentals, luminescence mechanisms, and key optical materials, including synthesis methods
Nitride Semiconductor Light-Emitting Diodes (LEDs)
| Author | : Jian-Jang Huang |
| Publisher | : Woodhead Publishing |
| Total Pages | : 673 |
| Release | : 2014-02-14 |
| Genre | : Technology & Engineering |
| ISBN | : 0857099302 |
The development of nitride-based light-emitting diodes (LEDs) has led to advancements in high-brightness LED technology for solid-state lighting, handheld electronics, and advanced bioengineering applications. Nitride Semiconductor Light-Emitting Diodes (LEDs) reviews the fabrication, performance, and applications of this technology that encompass the state-of-the-art material and device development, and practical nitride-based LED design considerations. Part one reviews the fabrication of nitride semiconductor LEDs. Chapters cover molecular beam epitaxy (MBE) growth of nitride semiconductors, modern metalorganic chemical vapor deposition (MOCVD) techniques and the growth of nitride-based materials, and gallium nitride (GaN)-on-sapphire and GaN-on-silicon technologies for LEDs. Nanostructured, non-polar and semi-polar nitride-based LEDs, as well as phosphor-coated nitride LEDs, are also discussed. Part two covers the performance of nitride LEDs, including photonic crystal LEDs, surface plasmon enhanced LEDs, color tuneable LEDs, and LEDs based on quantum wells and quantum dots. Further chapters discuss the development of LED encapsulation technology and the fundamental efficiency droop issues in gallium indium nitride (GaInN) LEDs. Finally, part three highlights applications of nitride LEDs, including liquid crystal display (LCD) backlighting, infrared emitters, and automotive lighting. Nitride Semiconductor Light-Emitting Diodes (LEDs) is a technical resource for academics, physicists, materials scientists, electrical engineers, and those working in the lighting, consumer electronics, automotive, aviation, and communications sectors. - Reviews fabrication, performance, and applications of this technology that encompass the state-of-the-art material and device development, and practical nitride-based LED design considerations - Covers the performance of nitride LEDs, including photonic crystal LEDs, surface plasmon enhanced LEDs, color tuneable LEDs, and LEDs based on quantum wells and quantum dots - Highlights applications of nitride LEDs, including liquid crystal display (LCD) backlighting, infra-red emitters, and automotive lighting
Thermal Management for LED Applications
| Author | : Clemens J.M. Lasance |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 550 |
| Release | : 2013-09-17 |
| Genre | : Technology & Engineering |
| ISBN | : 1461450918 |
Thermal Management for LED Applications provides state-of-the-art information on recent developments in thermal management as it relates to LEDs and LED-based systems and their applications. Coverage begins with an overview of the basics of thermal management including thermal design for LEDs, thermal characterization and testing of LEDs, and issues related to failure mechanisms and reliability and performance in harsh environments. Advances and recent developments in thermal management round out the book with discussions on advances in TIMs (thermal interface materials) for LED applications, advances in forced convection cooling of LEDs, and advances in heat sinks for LED assemblies.
Review of G7 Government-led Voluntary and Mandatory Due Diligence Measures for Sustainable Agri-food Supply Chains
| Author | : OECD |
| Publisher | : OECD Publishing |
| Total Pages | : 59 |
| Release | : 2024-01-16 |
| Genre | : |
| ISBN | : 9264946691 |
This report aims to provide G7 agricultural policy makers with insights to better understand the design, objectives and mechanisms of national and regional, voluntary and mandatory due diligence-related measures.
Practical Lighting Design with LEDs
| Author | : Ron Lenk |
| Publisher | : John Wiley & Sons |
| Total Pages | : 216 |
| Release | : 2011-04-04 |
| Genre | : Technology & Engineering |
| ISBN | : 1118011732 |
This book covers all of the information needed to design LEDs into end-products. It is a practical guide, primarily explaining how things are done by practicing engineers. Equations are used only for practical calculations, and are kept to the level of high-school algebra. There are numerous drawings and schematics showing how things such as measurements are actually made, and showing curcuits that actually work. There are practical notes and examples embedded in the text that give pointers and how-to guides on many of the book's topics. After reading each chapter of the book, readers will have the knowledge to implement practical designs. This book will be kept as a reference tool for years to come.
