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Electrical Resistivity and Conductivity
Motivated by the importance of electrical resistivity and conductivity, important experts in this field grasp most recent researches in this book. It addresses recent advances in electrical resistivity and conductivity modelling, measurement, estimation and sensing methods and implications. This book introduces innovative case studies for "Electrical Resistivity Sensing Methods and Implications", "Resistivity Model of Frozen Soil and High-Density Resistivity Method for Exploration of Discontinuous Permafrost", "Measurement of Electrical Resistivity for Unconventional Structures", "Estimation of Hydrological Parameters from Geoelectric Measurements" and "Assessment of Cryoprotectant Concentration by Electrical Conductivity Measurement and Its Applications in Cryopreservation". These recent advances are well prepared and presented in six chapters. These chapters are carefully selected to reflect current variable techniques, new concepts and methods related to the book's topic from different perspectives.
Electrical Conductivity in Polymer-Based Composites
Electrical Conductivity in Polymer-Based Composites: Experiments, Modelling and Applications offers detailed information on all aspects of conductive composites. These composites offer many benefits in comparison to traditional conductive materials, and have a broad range of applications, including electronic packaging, capacitors, thermistors, fuel cell devices, dielectrics, piezoelectric functions and ferroelectric memories. Sections cover the theory of electrical conductivity and the different categories of conductive composites, describing percolation threshold, tunneling effect and other phenomena in the field. Subsequent chapters present thorough coverage of the key phases in the devel...
Measurements of Atmospheric Electric Conductivity and Field in the Shenandoah National Park, Virginia
A program for the measurement of atmospheric electric conductivity and field was established by the U.S. Naval Research Laboratory in 1954 in the Big Meadows area of the Shenandoah National Park, Virginia. The purpose of the program was to determine relative magnitudes and time dependence of the atmospheric electric variables. The instrumentation was composed of electric field meters, conductivity chambers, accompanying amplifiers and timers, and peripheral equipment necessary to produce continuous recordings of the electric field and conductivity of the atmosphere. Data from November 23, 1954, to October 21, 1956, are presented in tabulated and graphic form. The data include daily, monthly, and seasonal hourly averages of total atmospheric electric conductivity, ratio of the two polar conductivities, electric field, and computed conduction current density. (Author).
Electrical Conductivity of Magnetoplasmas
The use of effective parameters to take into account the velocity dependence of the electron neutral collision frequency is reviewed. The concept of an effective collision frequency and an effective plasma frequency is applied to wave propagation in weakly ionized magnetoplasmas. The relationship between these effective parameters and a new collisional response function R(y) is described. Curves are presented of the effective parameters as a function of frequency for both a pure power law dependence of the collision frequency on electron velocity and for the case of a coupling between two power law variations. The isotropic part of the electron distribution is taken to be Maxwellian. (Author).
