The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The electrical resistivity (ρ) of Yb doped BaTiO3 ceramics in function of temperature is investigated in this article. The concentrations of additive in the BaTiO3 doped samples were ranged from 0.01 to 1.0 at % Yb. The conventional solid state reaction is used for preparation of initial samples. The samples are sintered at 1320° and 1380°C in air atmosphere for 4 hours. The electrical resistivity...
Safe operation of electrical power network relies on healthy electrical insulation of all of its components. In general, the condition of insulation is unknown and appropriate periodic electrical testing is required to detect potential deterioration and avoid catastrophic failure of the given system.
In the paper, some factors produced instrumental error of the coaxial shunts conversion ratio have been studied. Complementary error influence on the corrected shunt dynamic characteristics with increasing current magnitude has been estimated. The optimal physical properties for material of a resistive pipe coaxial shunt have been determined.
In 2010, NIST measured the Boltzmann constant k with an electronic technique that measured the Johnson noise of a 100 Ω resistor at the triple point of water (TPW) and used a voltage waveform synthesized with a quantized voltage noise source (QVNS) as a reference. In this paper, we present measurements of k using a 200 Ω sense resistor and appropriately modified QVNS circuit and waveform. Preliminary...
In this paper, the method of Spatial Fourier Transform has been used to investigate the pattern formation dynamics in a dielectric barrier discharge (DBD) system. With this method, patterns formed in the DBD system can be transformed into smooth frequency spectrum. The frequency constitution of discharge pattern can be analyzed. In our experiment mixed gas of 96% Ar and 4% air at 0.9 atm is used as...
In the past year a new class of epoxy resins has come onto the market. These resins which go under the name of Oxiron® are epoxidized polybutadienes. In addition to having the oxirane oxygen groups, they also possess unsaturation and therefore the methods of curing them can be quite diverse. The great versatility of this resin has been discussed in previous papers(1, 2, 3, 4) as well as its application...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.