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As the demand for electric power grows continuously, there are more AC and DC lines sharing the same corridor because of economic and ecological reasons. One of the problems is the induced fundamental frequency voltages and consequent circulating current on the DC lines by the coupled parallel AC lines. The LCC-MMC hybrid transmission system is quite suitable to transmit bulk power over long distance...
In this paper, electrochemical tests are applied to investigate the effects of Al(III) and nano-sized tridecameric aluminum polycation (nano- ) on aldehyde dehydrogenase (ALDH) activity, by using reduced graphene oxide chemically modified electrodes. The amperometric curves for the oxidation of the enzymatically generated diphosphopyridine nucleotide-reduced disodium salt (NADH)...
Using classical transmission line steady-state model and based on the three-pulse harmonic voltages of the rectifier side and the inverter side, this paper describes an approach to calculate the DC side harmonic currents in HVDC systems, including the harmonic currents flowing directly in the DC line and the grounding electrode line, as well as the harmonic currents induced in their lightning shield...
Electrical impedance tomography (EIT) is believed to be a distinctive imaging technology and have good prospect in the field of biomedical testing. A multi-channel electrical impedance measurement system using DSP is studied. It includes four modules: excitation source, electrode array, signal acquisition, and signal processing. The results in experiment demonstrate that the system can distinguish...
This paper presents a design of a phase-sensitive detector based on matched filter principles and implemented using digital signal processing (DSP) technology for electrical impedance tomography (EIT) system. The digital phase-sensitive detector (DPSD) was realized with DSP, field programmable gate array (FPGA) chips and other analog circuits. The sampling pulse controlling the analog-to-digital converter...
Summary form only given. In this paper, the emission of organic material inserted between two amorphous silicon dioxides (a-SiO2 ) by using high-doped p-type silicon as anode or n-type silicon as cathode has been studied under AC and DC applied voltages. Enhanced charge carrier injection and luminance were observed, which shows high-doped silicon as electrodes can increase the quantity of injected...
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