نتایج جستجو برای: equivalent series resistance
تعداد نتایج: 846793 فیلتر نتایج به سال:
For later development of design snow loads, the water equivalent of snow on the ground appears to be the best The appropriate climatological series for this is the winter Among many distributions investigated, the lognormal Distributions fitted to 140 stations provided data In southern areas of the United States, where snow does This requires the A contour map is provided of the mixture paramet...
Extraction of accurate Photo Voltaic (PV) model parameters is a challenging task for PV simulator developers. To mitigate this challenging task a novel approach using Gravitational Search Algorithm (GSA) for accurate extraction of PV model parameters is proposed in this paper. GSA is a population based heuristic optimization method which depends on the law of gravity and mass interactions. In t...
Optically Transparent Microwave Metamaterial Absorber (OTMMA) is of significant use in both civil and military field. In this paper, equivalent circuit model is adopted as springboard to navigate the design of OTMMA. The physical model and absorption mechanisms of ideal lightweight ultrathin OTMMA are comprehensively researched. Both the theoretical value of equivalent resistance and the quanti...
BACKGROUND The Airflow Perturbation Device (APD) is a lightweight, portable device that can be used to measure total respiratory resistance as well as inhalation and exhalation resistances. There is a need to determine limits to the accuracy of APD measurements for different conditions likely to occur: leaks around the mouthpiece, use of an oronasal mask, and the addition of resistance in the r...
The determination of typical parameters electrochemical systems, e.g. the polarization or charge transfer resistances, can be critical with regard to application Electrochemical Impedance Spectroscopy (EIS) if lower frequency range is biased as a result transport and/or adsorption/desorption processes. In such cases, resistance should assessed from higher which typically inadequate in itself an...
Metallized polypropylene capacitors (MPPCs) are widely used in the modular multilevel converter (MMC) for high-voltage direct-current transmission systems because of their lower power losses and self-healing capability. The performance MPPCs MMC deteriorates with time due to increase equivalent series resistance a decrease capacitance. Therefore, reliability analysis MPPC is critical. This arti...
Conventional experimental methods for testing the performance of super-capacitors include measurement capacitance through charge and discharge, equivalent series resistance (ESR) self-discharge circuit model (ECM) by electrochemical impedance spectroscopy (EIS). However, are not suitable mass production line supercapacitors since they require a long time test several kinds different instrument....
The novel bacterial topoisomerase inhibitor class is an investigational type of antibacterial inhibitor of DNA gyrase and topoisomerase IV that does not have cross-resistance with the quinolones. Here, we report the evaluation of the in vitro properties of a new series of this type of small molecule. Exemplar compounds selectively and potently inhibited the catalytic activities of Escherichia c...
Silicon nanowire (SiNW) arrays were produced by electroless method on polycrystalline Si substrate, in HF/ AgNO3 solution. Although the monocrystalline silicon wafer is commonly utilized as a perfect substrate, polycrystalline silicon as a low cost substrate was used in this work for photovoltaic applications. In order to study the influence of etching time (which affects the SiNWs length) on d...
In this work we have demonstrated a waveguide integrated uni-traveling carrier photodiode on an InP-membrane-on-silicon platform with 3 dB bandwidth beyond 110 GHz. With design optimization and improved process, devices as small $ \text{3}\times \text{2}\;\mu \text{m}^2$ are successfully realized. An electrical equivalent ci...
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