Results 291 to 300 of about 113,538 (326)

Study of Dielectric Media with Relatively High Permittivity

Colloid Journal, 2001
The electrophysical characteristics of composite media consisting of finely dispersed T-10 000 ferroelectric ceramics and dielectric fluids are experimentally investigated. Transformer oil, dibutyl phthalate, cyclohexanol, and sulfolane are used as dielectric fluids. The permittivity of compositions e is directly proportional to that of the fluids. Its
E. M. Belokurov, S.G. Sarin, E.V. Yanshin, I. T. Ovchinnikov, A. S. Klepikov, K. V. Yanshin, S. M. Korobeinikov, V. M. Kopylov   +7 more
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Determining the relative permittivity of masses in the human body

Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012
This paper introduces a new method for in-vivo determination of the dielectric properties for embedded regions in human tissues. A surgery-free method is proposed for on-body monitoring system to evaluate the dielectric properties of internal body components (lung, heart etc) and to effectively determine irregularities in real-time.
Dimitris Psychoudakis, Safa Salman, John L. Volakis   +2 more
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Equations for Complex Relative Permittivity of Saline Water

IETE Technical Review, 1988
Equations hare been presented to calculate the complex relative permittivity of saline water as a function of salt content and temperature of water. The results obtained from these equations show good agreement with the published measured data.
Shushil K Aggarwal, R H Johnston
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The relative permittivity transition in solid camphor

Journal of Physics C: Solid State Physics, 1972
Three-terminal measurements of capacitance and dissipation factor have been made on samples of d-camphor, dl-camphor and l-camphor at frequencies between 200 Hz and 10 kHz over the temperature range -196 degrees C to +20 degrees C. The dielectric relaxation processes in d-camphor, below the transition temperature, have been studied and the change in ...
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Complex relative permittivity analysis for monitoring watermelon [PDF]

2017 International Symposium on Antennas and Propagation (ISAP), 2017
This paper proposes a study of complex relative permittivity (∊ r =∊ r ′-j∊ r ″) for monitoring watermelon. The complex relative permittivity of peel and pulp are analyzed as variation of maturity stages and used for determining mature fruit of watermelon from the measured reflection coefficient.
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The Influence of Space Radiation on the Relative Permittivity of Dielectrics

2020
<p>In the study of internal charging of dielectrics inside the spacecraft, we mainly focus on the influence of conductivity of dielectrics induced by space radiation(Radiation Induced Conductivity), and regard the relative permittivity as constant.
Siyu Song, Chen Hongfei, Qiugang Zong, Yu Xiangqian   +3 more
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Modelling the relative permittivity of anisotropic insulating composites

Composites Science and Technology, 2011
Three models have been developed for predicting the dielectric permittivity of insulating composites with inclusions of different lengths (from nm and larger) and different shapes. Firstly, for approximately periodic materials, a finite element model based on a smallest repeating box method was used in order to mimic frameworks with fibres, crystals ...
Fritjof Nilsson, Ulf W. Gedde, Mikael S. Hedenqvist   +2 more
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Frequency dependence of the relative permittivity of polar substances [PDF]

Proceedings of the Physical Society, 1964
A study of the Brownian motion of a dipolar molecule surrounded by a dispersive dielectric medium has resulted in the following generalization of Onsager's equation ( - ∞)(2* + ∞)(2 + 1)/3(2* + 1) = (4πNμ2/3kTV)((∞ + 2)2/9)(1/(1+iωτμ')) where τμ' is a microscopic relaxation time which includes the effect of dipole-dipole coupling.
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On the Pressure and Electric Field Dependencies of the Relative Permittivity of Liquids

Journal of Solution Chemistry, 1999
The dependencies of the relative permittivity e of over 50 liquids on the pressure P, as \((\partial \ln \varepsilon /P)_{T,P^0 } \), and of some 40 liquids on the (square of the) electric field E at ambient conditions, as \({\beta } = [\partial \varepsilon /\partial (E^2 )]_{T,P^0 } \) were obtained from literature data.
Marcus, Y., Hefter, G.
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Relative Permittivity Measurements of Carbon Dioxide + Ethanol Mixtures [PDF]

Journal of Chemical & Engineering Data, 2011
The relative permittivities (er) of carbon dioxide (CO2) + ethanol mixtures (0.050, 0.100, 0.152, and 0.212 mass fractions of ethanol) were measured at (303 to 333) K in the pressure range (7.2 to 30.8) MPa using a direct capacitance method.
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