Howard Phillips Lovecraft The Horror at Red Hook

Howard Phillips Lovecraft The Horror at Red Hook

Circles and pentagrams loomed on every hand, and told indubitably of the strange beliefs and aspirations of those who dwelt so squalidly here. In the cellar, however, the strangest thing was found-a pile of genuine gold ingots covered carelessly with a piece of burlap, and bearing upon their shining surfaces the same weird hieroglyphics which also adorned the walls.

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Rolf Klein Laser Welding of Plastics

Rolf Klein Laser Welding of Plastics

This is the first detailed description in English of radiation and polymeric material interaction and the influences of thermal and optical material properties. As such, it provides comprehensive information on material and process characteristics as well as applications regarding plastic laser welding. The first part of this practical book introduces the structure and physical properties of plastics, before discussing the interaction of material and radiation in the NIR and IR spectral range. This is followed by an overview of the physical foundations of laser radiation and laser sources used for plastic welding. The third part describes the main processes of laser welding thermoplastics, as well as possibilities of process control, design of joint geometry, material compatibilities and adaptation of absorption of plastics to NIR radiation. Finally, the author explains applications of laser welding plastics using several industrial case studies from the automotive industry, household goods, and medical devices. Tailored to the needs of everyone dealing with laser welding of plastics, especially engineers in packaging, component manufacturing, and the medical industry.

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Mittal K. L. Laser Surface Modification and Adhesion

Mittal K. L. Laser Surface Modification and Adhesion

The book provides a unique overview on laser techniques and applications for the purpose of improving adhesion by altering surface chemistry and topography/morphology of the substrate. It details laser surface modification techniques for a wide range of industrially relevant materials (plastics, metals, ceramics, composites) with the aim to improve and enhance their adhesion to other materials. The joining of different materials is of critical importance in the fabrication of many and varied products.

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Peter Epperlein W. Semiconductor Laser Engineering, Reliability and Diagnostics. A Practical Approach to High Power and Single Mode Devices

Peter Epperlein W. Semiconductor Laser Engineering, Reliability and Diagnostics. A Practical Approach to High Power and Single Mode Devices

This reference book provides a fully integrated novel approach to the development of high-power, single-transverse mode, edge-emitting diode lasers by addressing the complementary topics of device engineering, reliability engineering and device diagnostics in the same book, and thus closes the gap in the current book literature. Diode laser fundamentals are discussed, followed by an elaborate discussion of problem-oriented design guidelines and techniques, and by a systematic treatment of the origins of laser degradation and a thorough exploration of the engineering means to enhance the optical strength of the laser. Stability criteria of critical laser characteristics and key laser robustness factors are discussed along with clear design considerations in the context of reliability engineering approaches and models, and typical programs for reliability tests and laser product qualifications. Novel, advanced diagnostic methods are reviewed to discuss, for the first time in detail in book literature, performance- and reliability-impacting factors such as temperature, stress and material instabilities. Further key features include: practical design guidelines that consider also reliability related effects, key laser robustness factors, basic laser fabrication and packaging issues; detailed discussion of diagnostic investigations of diode lasers, the fundamentals of the applied approaches and techniques, many of them pioneered by the author to be fit-for-purpose and novel in the application; systematic insight into laser degradation modes such as catastrophic optical damage, and a wide range of technologies to increase the optical strength of diode lasers; coverage of basic concepts and techniques of laser reliability engineering with details on a standard commercial high power laser reliability test program. Semiconductor Laser Engineering, Reliability and Diagnostics reflects the extensive expertise of the author in the diode laser field both as a top scientific researcher as well as a key developer of high-power highly reliable devices. With invaluable practical advice, this new reference book is suited to practising researchers in diode laser technologies, and to postgraduate engineering students. Dr. Peter W. Epperlein is Technology Consultant with his own semiconductor technology consulting business Pwe-PhotonicsElectronics-IssueResolution in the UK. He looks back at a thirty years career in cutting edge photonics and electronics industries with focus on emerging technologies, both in global and start-up companies, including IBM, Hewlett-Packard, Agilent Technologies, Philips/NXP, Essient Photonics and IBM/JDSU Laser Enterprise. He holds Pre-Dipl. (B.Sc.), Dipl. Phys. (M.Sc.) and Dr. rer. nat. (Ph.D.) degrees in physics, magna cum laude, from the University of Stuttgart, Germany. Dr. Epperlein is an internationally recognized expert in compound semiconductor and diode laser technologies. He has accomplished R&D in many device areas such as semiconductor lasers, LEDs, optical modulators, quantum well devices, resonant tunneling devices, FETs, and superconducting tunnel junctions and integrated circuits. His pioneering work on sophisticated diagnostic research has led to many world’s first reports and has been adopted by other researchers in academia and industry. He authored more than seventy peer-reviewed journal papers, published more than ten invention disclosures in the IBM Technical Disclosure Bulletin, has served as reviewer of numerous proposals for publication in technical journals, and has won five IBM Research Division Awards. His key achievements include the design and fabrication of high-power, highly reliable, single mode diode lasers. Book Reviews “Semiconductor L

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Yogesh Sharma C. A Guide to the Economic Removal of Metals from Aqueous Solutions

Yogesh Sharma C. A Guide to the Economic Removal of Metals from Aqueous Solutions

Water pollution is topic of immense and common concern throughout the world. This book presents the results and data from research and adsorption experiments carried out on the removal of nickel and chromium (as well as other metals) from aqueous solutions using modified silica sand.

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J. Davim Paulo Laser in Manufacturing

J. Davim Paulo Laser in Manufacturing

Generally a laser (light amplification by stimulated emission of radiation) is defined as “a device which uses a quantum mechanical effect, stimulated emission, to generate a coherent beam of light from a lasing medium of controlled purity, size, and shape”. Laser material processing represents a great number of methods, which are rapidly growing in current and different industrial applications as new alternatives to traditional manufacturing processes. Nowadays, the use of lasers in manufacturing is an emerging area with a wide variety of applications, for example, in electronics, molds and dies, and biomedical applications. The purpose of this book is to present a collection of examples illustrating the state of the art and research developments to lasers in manufacturing, covering laser rapid manufacturing, lasers in metal forming applications, laser forming of metal foams, mathematical modeling of laser drilling, thermal stress analysis, modeling and simulation of laser welding, and the use of lasers in surface engineering. This book can be used as a research book for a final undergraduate engineering course or as a subject on lasers in manufacturing at the postgraduate level. Also, this book can serve as a useful reference for academics, laser researchers, mechanical, manufacturing, materials or physics engineers, or professionals in any related modern manufacturing technology. Contents 1. Laser Rapid Manufacturing: Technology, Applications, Modeling and Future Prospects, Christ P. Paul, Pankaj Bhargava, Atul Kumar, Ayukt K. Pathak and Lalit M. Kukreja. 2. Lasers in Metal Forming Applications, Stephen A. Akinlabi, Mukul Shukla, Esther T. Akinlabi and Tshilidzi Marwala. 3. Laser Forming of Metal Foams, Fabrizio Quadrini, Denise Bellisario, Erica A. Squeo and Loredana Santo. 4. Mathematical Modeling of Laser Drilling, Maturose Suchatawat and Mohammad Sheikh. 5. Laser Cutting a Small Diameter Hole: Thermal Stress Analysis, Bekir S. Yilbas, Syed S. Akhtar and Omer Keles. 6. Modeling and Simulation of Laser Welding, Karuppudaiyar R. Balasabramanian, Krishnasamy Sankaranarayanasamy and Gangusami N. Buvanashekaran. 7. Lasers in Surface Engineering, Alberto H. Garrido, Rubén González, Modesto Cadenas, Chin-Pei Wang and Farshid Sadeghi.

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Lüdge Kathy Nonlinear Laser Dynamics. From Quantum Dots to Cryptography

Lüdge Kathy Nonlinear Laser Dynamics. From Quantum Dots to Cryptography

A distinctive discussion of the nonlinear dynamical phenomena of semiconductor lasers. The book combines recent results of quantum dot laser modeling with mathematical details and an analytic understanding of nonlinear phenomena in semiconductor lasers and points out possible applications of lasers in cryptography and chaos control. This interdisciplinary approach makes it a unique and powerful source of knowledge for anyone intending to contribute to this field of research. By presenting both experimental and theoretical results, the distinguished authors consider solitary lasers with nano-structured material, as well as integrated devices with complex feedback sections. In so doing, they address such topics as the bifurcation theory of systems with time delay, analysis of chaotic dynamics, and the modeling of quantum transport. They also address chaos-based cryptography as an example of the technical application of highly nonlinear laser systems.

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Anil Maini K. Lasers and Optoelectronics. Fundamentals, Devices and Applications

Anil Maini K. Lasers and Optoelectronics. Fundamentals, Devices and Applications

With emphasis on the physical and engineering principles, this book provides a comprehensive and highly accessible treatment of modern lasers and optoelectronics. Divided into four parts, it explains laser fundamentals, types of lasers, laser electronics & optoelectronics, and laser applications, covering each of the topics in their entirety, from basic fundamentals to advanced concepts. Key features include: exploration of technological and application-related aspects of lasers and optoelectronics, detailing both existing and emerging applications in industry, medical diagnostics and therapeutics, scientific studies and Defence. simple explanation of the concepts and essential information on electronics and circuitry related to laser systems illustration of numerous solved and unsolved problems, practical examples, chapter summaries, self-evaluation exercises, and a comprehensive list of references for further reading This volume is a valuable design guide for R&D engineers and scientists engaged in design and development of lasers and optoelectronics systems, and technicians in their operation and maintenance. The tutorial approach serves as a useful reference for under-graduate and graduate students of lasers and optoelectronics, also PhD students in electronics, optoelectronics and physics.

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Edmond Malone An inquiry into the authenticity of certain miscellaneous papers and legal instruments

Edmond Malone An inquiry into the authenticity of certain miscellaneous papers and legal instruments

Полный вариант заголовка: «An inquiry into the authenticity of certain miscellaneous papers and legal instruments, published Dec. 24, MDCCXCV. and attributed to Shakspeare, Queen Elizabeth, and Henry, earl of Southampton / Ill. by fac-similes of the genuine hand-writing of that nobleman, and of Her Majesty; a new fac-simile of the hand-writing of Shakspeare, never before exhibited; and other authentick documents: in a letter addressed to the Right Hon. James, earl of Charlemont, by Edmond Malone».

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