نتایج جستجو برای: discharges electric
تعداد نتایج: 156136 فیلتر نتایج به سال:
Derived from the Pseudo Two-Dimensional mathematical structure, a simplified electrochemical and thermal model of LiFePO4-graphite based Li-ion batteries is developed in this paper. Embedding the porous electrode theory, this model integrates the main design parameters of Li-ion systems and its partial differential equations mathematical structure makes it a promising candidate for battery mana...
Identifying and understanding the current sources that give rise to bioelectric fields is a fundamental problem in the biological sciences. It is very difficult, for example, to attribute the time-varying features of an electroencephalogram recorded from the head surface to the neural activity of specific brain areas; model systems can provide important insight into such problems. Some species ...
This study explores the evolutionary origins of waveform complexity in electric organ discharges (EODs) of weakly electric fish. I attempt to answer the basic question of what selective forces led to the transition from the simplest signal to the second simplest signal in the gymnotiform electric fishes. The simplest electric signal is a monophasic pulse and the second simplest is a biphasic pu...
Weakly electric fish communicate with brief electrostatic field pulses called electric organ discharges (EODs). EOD waveforms are sexually dimorphic in most genera, a condition thought to result from mate choice acting to shape the electric signal’s constituent action potentials. We have no direct behavioural evidence that sexual selection by either mate choice or intrasexual competition is res...
This study aims to develop a pulse classification algorithm understand wire electric discharge machining (wire EDM) process stability and performance based on the characteristics. Also, data driven failure prediction system is proposed. The EDM monitoring includes high sampling rate differential probes current probes. features extracted through train analysis were spark energy, ignition delay t...
Abstract— The paper presents a review of modern works on gasdynamic flow control using highly nonequilibrium pulsed plasma. main attention is paid to the effects based ultrafast (on nanosecond time scale for atmospheric pressure) local gas heating, since, at present, successes in controlling high-speed flows by means discharges are associated with this thermal mechanism. Attention physical mech...
Due to the increase in electrical power demand, future more electric and all-electric aircraft designs will operate at higher voltage levels compared current aircraft. reduced operating pressure, insulation systems be risk. Air is main insulating medium, it well known that its dielectric strength decreases considerably with pressure. Although discharges can detected by different techniques, opt...
Charge moment change and lightning-driven electric fields associated with negative sprites and halos
[1] Sprites are structured high altitude optical emissions produced by lightning-driven electric fields. Both strong positive and negative cloud to ground flashes (CGs) are capable of initiating sprites. However, reported sprites are almost exclusively produced by +CGs. The very limited number of negative polarity sprites makes it difficult to reveal their morphologies and mechanisms. Since 200...
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