Results 301 to 310 of about 113,538 (326)
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Relative permittivity and dielectric relaxation in aqueous alcohol solutions
Fluid Phase Equilibria, 1998Abstract In this work, our objective was to study the hydrogen bonding of alcohols in aqueous solutions and alcohol dipole relaxation by measuring the complex permittivity. Alcohols chosen for study were methanol, ethanol and propanol over the full composition range and from 297–363 K. Measurements were made with a frequency domain technique from 100
H Komori +3 more
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Relative permittivity of organic liquids as a function of pressure and temperature [PDF]
Journal of Physics A: General Physics, 1971 Precision measurements of the relative permittivity of n heptane at pressures up to 3334 bar and over a temperature range from 0 to 100 degrees C are reported. Similar data for carbon tetrachloride up to 1118 bars and at temperatures from 25 to 54 degrees C have also been obtained.
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Influence of high pressure on the relative permittivity of oleic acid
High Pressure Research, 2011Oleic acid (OA) is a monounsaturated omega-9 fatty acid which undergoes a first-order phase transition when it is influenced by high pressures. The transition results in a change of molecular structure, which was investigated by means of X-ray techniques [J. Przedmojski and R.M.
R. Kościesza, R. M. Siegoczyński
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Determining the relative permittivity of deep embedded biological tissues
2013 US National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM), 2013Human tissue characterization, deep into the body, has been of interest for decades. X-rays are used for locating tumors. However, such surgery-free identification methods fail to verify whether tumors are benign or malignant without surgical extraction and testing of sample tissue.
Safa Salman, John L. Volakis
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A Simple Measurement of the Relative Permittivity of an Insulating Liquid
American Journal of Physics, 1969A simple test cell has been devised in which the charge on one plate of a parallel-plate capacitor is repeatedly transferred to a capacitor—electrostatic voltmeter combination. From the voltmeter readings as the system is operated first in air and then in an insulating liquid, the relative permittivity of the latter can be evaluated with an error of ...
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A Comprehensive Study of the Relative Dielectric Permittivity in Porous Media
Proceedings of SPE Western Regional Meeting, 2001Abstract This study investigated the effects of water saturation and wettability on the dielectric permittivity experimentally, using four-electrode impedance measurements, and theoretically, using models that account for the electrical double layer polarization. Complex impedance measurements, performed on Berea sandstone
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Resonant-cavity measurements of the relative permittivity of a d.c. discharge
Proceedings of the IEE Part C: Monographs, 1955The relative permittivity of a gaseous discharge has been measured at 2 100, 2 500, and 3 000Mc/s, using an H011 resonant-cavity method. The preliminary experiments were carried out using a discharge in a mixture of argon (2½ mmHg pressure) and mercury vapour. Later experiments employed a specially constructed low-pressure mercury-vapour tube.
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