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The Essence of Dielectric Waveguides provides an overview of the fundamental behavior of guided waves, essential to finding and interpreting the results of electromagnetic waveguide problems. Clearly and concisely written as well as brilliantly organized, this volume includes a detailed description of the fundamentals of electromagnetics, as well as a new discussion on boundary conditions and attenuation. It also covers the propagation characteristics of guided waves along classical canonical dielectric structures – planar, circular cylindrical, rectangular and elliptical waveguides. What’s more, the authors have included extensive coverage of inhomogeneous structures and approximate methods, as well as several powerful numerical approaches specifically applicable to dielectric waveguides.
Based on properly organized reprints by C. Yeh and his collaborators, innovative and original solutions to a number of fundamental problems, essential to the teaching and research in modern electromagnetics, are presented in From Analytic to Numerical Electromagnetics. The wide range of coverage from general applied theory to the pioneering development of canonical solutions and numerical methods offers a rare in-depth understanding of the methods used in solving complex problems in classical and modern electromagnetics. Selected specific examples of solved problems are: New derivation of boundary conditions, conditions for scalar wave approximation, completeness of the far-zone data, correc...
The coronavirus pandemic that began in 2019 brought to the fore the presence of a significant minority of individuals who strongly oppose vaccination. This opposition is by no means recent. Ever since the very first attempts to immunize individuals, opposition has been intense in some societies. The reasons for this opposition range from religious to political to medical. Although vaccines have eliminated smallpox and largely eliminated polio and measles, opposition to vaccination persists and, in some countries, has grown stronger.A History of Vaccines and Their Opponents seeks to describe the history of this opposition as well as its changing rationale over the years and in different societies. The discussion may ultimately provide some suggestions for reducing hesitancy in the future. - Demonstrates vaccine hesitancy is not new and is widespread around the world - Presents the history of the opposition to immunization - Provides counterarguments to the opposition today
This book offers an analytical look at the much debated risks and benefits of the newly developed COVID-19 mRNA-vaccines. As such, it is one of the first books to give a comprehensive overview of mRNA vaccines against COVID-19 and the only one that addresses this topic from a broad multidisciplinary background. It brings together insights from various underlying disciplines on the challenges of developing and evaluating the most suitable vaccines for mass vaccination programs enrolled throughout the world - focusing on safety and efficacy. This book should not be missing on the shelf of any biomedical researcher, epidemiologist, public health professional or clinical researcher interested in SARS-CoV2 or virology and vaccine development in general.
This book provides a comprehensive overview of laser sources and their applications in various fields of science, industry, and technology. After an introduction to the basics of laser physics, different laser types and materials for lasers are summarized in the context of a historical survey, outlining the evolution of the laser over the past five decades. This includes, amongst other aspects, gas lasers, excimer lasers, the wide range of solid-state and semiconductor lasers, and femtosecond and other pulsed lasers where particular attention is paid to high-power sources. Subsequent chapters address related topics such as laser modulation and nonlinear frequency conversion. In closing, the ...
The development of chemicals to selectively control the growth of weeds has been a fascinating success story which has unfolded largely during the last four decades. The dramatic growth of herbicide research that followed the wartime discoveries of the auxin-type herbicides (phenoxyalkanoic acids) resulted in a whole range of compounds and mixtures which are used to eliminate broad-or narrow-leaved weeds from agricultural, horticul tural, or forestry crops. Today, the safe use of this armament of compounds requires our understanding of their mode of action, metabolism, and environmental persistence. The most recently developed herbicides are highly effective inhibitors of specific enzyme sys...
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