A F Kilmovich's Books

Electrets In Engineering

Fundamentals and Applications

By: Vladimir N. Kestelman,Leonid S. Pinchuk,Victor A. Goldade

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Electrets In Engineering

Fundamentals and Applications

By: Vladimir N. Kestelman,Leonid S. Pinchuk,Victor A. Goldade

Recently a new sphere in materials science· has formed which subject is structure and properties of electret materials used in engineering, medicine, biotechnology and other branches. It is characterized by specific methods of experimental investigations based on recording charge transfer, polarization and depolarization of dielectrics and involves original techniques and physico-mathematical aids where notions that exist at the interface of several natural and technical sciences are concentrated. It embraces a vast area of applications mainly in engineering, instrument making, electronics, medical technique, biotechnology, and etc., has a specialized technological base for electric polarization of dielectrics composed of uncommon technological methods, equipment and instrumentation. Apparently, future fundamental investigations in the domain of electret materials science are to be developed at the interface of computer of dielectrics. Elaboration of a simulation, physics and physical chemistry model for electric polarization of solid media with uneven charge density distribution, complicated by surface phenomena, outer electromagnetic, heat, chemical and other effects, presents a grave methodological problem. The simulation of structures in which polarization follows diffusion mechanism of chemically active molecules or their fragments, and the development of calculation methods for polarized charge relaxation and regularities of dielectric nonlinear properties, are the most urgent objectives of current research. Success in bioelectret effect studies is anticipated to result in profound widening of natural science knowledge.

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Page Count

286

Publisher

Springer Science & Business Media

Published Date

ISBN 10

1461544556

ISBN 13

9781461544555

Islam in Iran

By: Il?i?a Pavlovich Petrushevski?,Il?i?a? Pavlovich Petrushevski?

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Islam in Iran

By: Il?i?a Pavlovich Petrushevski?,Il?i?a? Pavlovich Petrushevski?

A scholarly and authoritative history of the emergence and growth of Islam in Iran during the early and later medieval periods. This book, by I. P. Petrushevsky, the foremost Soviet Iranologist, was originally published in Russia in 1966. After discussing the Arabian environment in which the faith of Islam arose, and the character--legal, social and doctrinal--of the new message, the author moves on to trace the peculiarly Iranian development of Islamic beliefs, the schisms which arose in its early history, and the eventual creation of a Sunni orthodoxy. Written from the Russian perspective, with Russia's long contact with Iranian and Turkish Muslim neighbors, it provides a stimulating and salutary balance to the study of the Islamic world.

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Page Count

416

Publisher

SUNY Press

Published Date

ISBN 10

0887060706

ISBN 13

9780887060700

Electromagnetic Fields Excited in Volumes with Spherical Boundaries

By: Yuriy M. Penkin,Victor A. Katrich,Mikhail V. Nesterenko,Sergey L. Berdnik,Victor M. Dakhov

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Electromagnetic Fields Excited in Volumes with Spherical Boundaries

By: Yuriy M. Penkin,Victor A. Katrich,Mikhail V. Nesterenko,Sergey L. Berdnik,Victor M. Dakhov

This book discusses the problem of electromagnetic wave excitation in spatial regions with spherical boundaries and the accurate mathematical modeling based on numerical and analytical methods to significantly reduce the time required for developing new antenna devices. It particularly focuses on elements and systems on mobile objects of complex shape that are made of new technological materials. The experimental development of such devices and systems is an extremely time-consuming, lengthy, and expensive process. The book is intended for senior and postgraduate students and researchers working in the fields of radiophysics, radio engineering and antenna design. The authors assume that readers understand the basics of vector and tensor analysis, as well as the general theory of electrodynamics. The original results presented can be directly used in the development of spherical antennas and antenna systems for the mobile objects. The book addresses problems concerning the construction of Green’s functions for Hertz potentials in electrodynamic volumes with spherical boundaries, and solves these clearly and concisely. It also uses specific examples to analyze areas where the results could potentially be applied. The book covers the following topics: · excitation of electromagnetic fields in coordinate electrodynamic volumes; · Green’s functions for spherical resonators; · Green’s functions for infinite space outside of spherical scatterers; · electromagnetic fields of dipole radiators on spherical scatterers; · electromagnetic fields of thin radial impedance vibrators on perfectly conducting spheres; · electrodynamic characteristics of narrow slots in spherical surfaces; · multi-element and combined vibrator-slot radiators on spherical surfaces.

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Page Count

207

Publisher

Springer

Published Date

ISBN 10

3319978195

ISBN 13

9783319978192

Book's by A F Kilmovich

Electrets In Engineering

Electrets In Engineering

Islam in Iran

Islam in Iran

Electromagnetic Fields Excited in Volumes with Spherical Boundaries

Electromagnetic Fields Excited in Volumes with Spherical Boundaries

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