نتایج جستجو برای: electric resistance measurement
تعداد نتایج: 935074 فیلتر نتایج به سال:
To investigate the dominant factors that allow a reproducible nuclear reaction in DPd systems, the initial electric resistance and the hardness of the Pd cathode have been examined for excess heat generation and the excess neutron emission in LiOD-Pd electrolysis cells. Two background (control) runs and one foreground run with the Pd cathode of high electric resistance and high hardness gave no...
The traditional electrical field sensing can be realized by utilizing electro-optic materials or liquid crystals, and has limitations of easy breakdown, free assembly and difficult measurement of low-frequency. Here, we propose a new method to realize safe measurement of spatial dynamic electric field by using a micro fiber interferometer integrated with gold nanofilm. The energy of the electri...
The electric threshold is widely used as a criterion indicating the intensity factor of excitability of nerve and muscle. For consideration of the electric excitation of these tissues, factors other than the above, such as the time factor and the slope factor, appear to be important (Suzuki (16)). These factors have been studied thoroughly in the first half of this century. Observations have al...
Introduction: Electromagnetic field emitted by laptops are known as extremely low frequency (ELF) Waves. The aim of this study was to investigate the intensity of electric and magnetic field with extremely low frequency emitted by common laptops. . Material and Method: Intensity of electric and magnetic field were measured on four sides of 40 common by used laptop at the distance of 30, 60 and...
In this paper, portable and online monitoring systems for non-ionizing EMF measurement, as well as some measurement results in Tehran are discussed. First of all, standards and recommendations related to EMF monitoring, measurement and exposure such as ISIRI No.8567, ICNIRP guideline and ITU-K.83 are reviewed. Then, technical facts and operation of portable device and monitoring station are int...
In this work, a measurement error analysis for a position estimator for self-sensing magnetic levitation systems is shown. The analysis is based on the position estimation algorithm proposed in [3, 4], which is set up by a least squares identification of the inductance and a suitable averaging. By means of a mathematical model the main idea of the estimation strategy is shortly outlined and it ...
The total electric resistance R is theoretically linearly increasing function of the conductive wire length L because the electric conductivity K or electric resistivity r is independent on L. It was found out that dependence of electric resistance R on L is highly nonlinear for yarns containing the conductive metal fibers. The main aim of this paper is creation of the simple mechanistic model ...
The presence of promoter(s) of ethylene biosynthesis in young cotton (Gossypium hirsutum L.) fruits (bolls) was demonstrated by injection of an aqueous extract from bolls into other bolls and measurement of a 3-fold increase in rate of ethylene evolution. Injection of methionine did not affect rate of ethylene production, indicating that the promoter extracted from bolls was not methionine. Inj...
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