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Measurement Of Dielectric Properties In The Frequency Range Of 300 Mhz To 3 Ghz As A Function Of Temperature Density
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Book Synopsis Measurement of Dielectric Properties in the Frequency Range of 300 MHz to 3 GHz as a Function of Temperature Density by : Johanna B. Salsman end
Download or read book Measurement of Dielectric Properties in the Frequency Range of 300 MHz to 3 GHz as a Function of Temperature Density written by Johanna B. Salsman end and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the research effort on investigating the effects of microwave energy on the chemical and physical properties of minerals and ores, the U.S. Bureau of Mines, Tuscaloosa Research Center has conducted an extensive research program on identifying those properties of minerals that are affected by microwave energy, namely the dielectric constant and loss tangent. The objective was to establish a reliable data base for predicting the effects of microwave heating on minerals. The dielectric constant and loss tangent of minerals, commonly referred to as the dielectric properties, were determined utilizing the theory of microwave propagation through an open-ended air filled coaxial line that was terminated at its open end with the particular mineral under investigation and measuring the reflection coefficient of the mineral with a network analyzer. From the measured values of the reflection coefficient, the dielectric properties of the mineral could be determined. The dielectric properties of powdered minerals with medium to high electrical conductivities (tan>.0l) were measured in the frequency range of 300 MHz to 3 GHz. Since the minerals were prepared as powders, techniques were used to relate the measured dielectric properties of the powdered minerals to the dielectric properties of the mineral at its theoretical or natural density. Also, these measurements were performed as a function of temperature, from 25 deg to 325 deg C. The results of the dielectric constants and loss tangents using this method were determined to be precise within + or - 5 pct. This report describes the method of measurement and discusses the results of the Bureau's investigations into dielectric properties of minerals with the inclusion of typical measured data.
Book Synopsis New Publications by : United States. Bureau of Mines
Download or read book New Publications written by United States. Bureau of Mines and published by . This book was released on 1987 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Dielectric and Thermal Properties of Materials at Microwave Frequencies by : Vyacheslav V. Komarov
Download or read book Handbook of Dielectric and Thermal Properties of Materials at Microwave Frequencies written by Vyacheslav V. Komarov and published by Artech House. This book was released on 2012 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of microwave energy for thermal processing of different materials and substances is a rapidly growing trend in modern science and engineering. In fact, optimal design work involving microwaves is impossible without solid knowledge of the properties of these materials. Heres a practical reference that collects essential data on the dielectric and thermal properties of microwaveable materials, saving you countless hours on projects in a wide range of areas, including microwave design and heating, applied electrodynamics, food science, and medical technology. This unique book provides hard-to-find information on complex dielectric permittivity of media at industrial, scientific, and medical frequencies (430 MHz, 915MHz, 2.45GHz, 5.8 GHz, and 24.125GHz). Written by a leading expert in the field, this authoritative book does an exceptional job at presenting critical data on various materials and explaining what their key characteristics are concerning microwaves.
Book Synopsis Bureau of Mines Research by : United States. Bureau of Mines
Download or read book Bureau of Mines Research written by United States. Bureau of Mines and published by . This book was released on 1992 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dielectric Properties of Agricultural Materials and their Applications by : Stuart Nelson
Download or read book Dielectric Properties of Agricultural Materials and their Applications written by Stuart Nelson and published by Academic Press. This book was released on 2015-04-13 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectric Properties of Agricultural Materials and Their Applications provides an understanding of the fundamental principles governing dielectric properties of materials, describes methods for measuring such properties, and discusses many applications explored for solving industry problems. The information in this reference stimulates new research for solving problems associated with production, handling, and processing of agricultural and food products. Anyone seeking a better understanding of dielectric properties of materials and application of radio-frequency and microwave electromagnetic energy for solution of problems in agriculture and related fields will find this an essential resource. Presents applications of dielectric properties for sensing moisture in grain and seed and the use of such properties in radio-frequency and microwave dielectric heating of agricultural materials Offers information for finding correlations between dielectric properties and quality attributes such as sweetness in melons, or other desired characteristics of agricultural products Identifies conditions for selective dielectric heating of materials such as insects in grain or biological organisms in soils Provides a solid understanding of dielectric properties and the variables that influence these properties
Book Synopsis List of Bureau of Mines Publications and Articles ... with Subject and Author Index by : United States. Bureau of Mines
Download or read book List of Bureau of Mines Publications and Articles ... with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bureau of Mines Publications and Articles ... (with Subject and Author Index). by : United States. Bureau of Mines
Download or read book Bureau of Mines Publications and Articles ... (with Subject and Author Index). written by United States. Bureau of Mines and published by . This book was released on 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Meeting Abstracts by : American Ceramic Society. Meeting
Download or read book Annual Meeting Abstracts written by American Ceramic Society. Meeting and published by . This book was released on 1991 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Temperature and Frequency Dependence of Complex Permittivity in Metal Oxide Dielectrics: Theory, Modelling and Measurement by : Jonathan Breeze
Download or read book Temperature and Frequency Dependence of Complex Permittivity in Metal Oxide Dielectrics: Theory, Modelling and Measurement written by Jonathan Breeze and published by Springer. This book was released on 2016-09-08 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates the dielectric properties of metal-oxide ceramics at microwave frequencies. It also demonstrates for the first time that a theory of harmonic phonon coupling can effectively predict the complex permittivity of metal oxides as a function of temperature and frequency. Dielectric ceramics are an important class of materials for radio-frequency, microwave and emergent terahertz technologies. Their key property is complex permittivity, the real part of which permits the miniaturisation of devices and the imaginary part of which is responsible for the absorption of electromagnetic energy. Absorption limits the practical performance of many microwave devices such as filters, oscillators, passive circuits and antennas. Complex permittivity as a function of temperature for low-loss dielectrics is determined by measuring the resonant frequency of dielectric resonators and using the radial mode matching technique to extract the dielectric properties. There have been only a handful of publications on the theory of dielectric loss, and their predictions have often been unfortunately unsatisfactory when compared to measurements of real crystals, sometimes differing by whole orders of magnitude. The main reason for this is the lack of accurate data for a harmonic coupling coefficient and phonon eigenfrequencies at arbitrary q vectors in the Brillouin zone. Here, a quantum field theory of losses in dielectrics is applied, using results from density functional perturbation theory, to predict from first principles the complex permittivity of metal oxides as functions of frequency and temperature.
Book Synopsis Abstracts by : Materials Research Society. Meeting
Download or read book Abstracts written by Materials Research Society. Meeting and published by . This book was released on 1992 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microwave Processing of Materials by :
Download or read book Microwave Processing of Materials written by and published by . This book was released on 1991 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Practical Interpretation of Dielectric Measurements Up to 100-mc by : Johns Hopkins University. Dielectrics Laboratory
Download or read book A Practical Interpretation of Dielectric Measurements Up to 100-mc written by Johns Hopkins University. Dielectrics Laboratory and published by . This book was released on 1958 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1970 with total page 1202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physicochemical Aspects of Metal-Organic Frameworks by : Ali Maleki
Download or read book Physicochemical Aspects of Metal-Organic Frameworks written by Ali Maleki and published by Springer Nature. This book was released on 2023-03-03 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a both detailed and comprehensive look at metal–organic frameworks (MOFs), a relatively new class of materials with a broad application potential. The beginning chapters focus on introducing the requisite fundamental knowledge of MOFs with respect to their classification, synthesis, functionalization approaches, and various other physiochemical facets such as structural morphology and coordination chemistry. The remaining chapters cover an array of diverse applications, from areas such as energy storage and environmental remediation, to drug delivery, biosensing, and tissue engineering. Featuring chapters dedicated to the design of novel MOF structures, as well as theoretical calculations via density functional theory and machine learning techniques, this book targets a wide readership of both academic and industrial researchers interested in an in-depth understanding of the latest MOF structure–function relationships, as well as their deployment in a wide variety of coordinated engineering applications.
Book Synopsis High Frequency Dielectric Measurement by : John Ernest Chamberlain
Download or read book High Frequency Dielectric Measurement written by John Ernest Chamberlain and published by Ipc Science and Technology Press Limited. This book was released on 1973 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ceramic Abstracts written by and published by . This book was released on 1998 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
