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Random interleavers are in common use to interleave division multiple access (IDMA) for separating users, but it need system to transmit and store interleavers pattern. This paper describe IDMA system base on linear congruential generator (LCG). The simulation results and analysis of peak basis correlation (PBC) prove that the system performance is as good as the system with random interleavers.
An efficient visual detection method of Ba2+ using tiopronin (Tio)-modified gold nanoparticles (GNPs) in aqueous solution is reported. Tio could bind onto the GNP surfaces through the sulphur atom and the cross-linking of Tio-functionalised GNPs could be quickly accomplished by chelation upon the addition of Ba2+. Colour changes were observed from red to blue (or purple) within minutes with the increased...
The purpose of this study was to develop a sensitive and low-cost optical sensor for screening pymetrozine using unmodified gold nanoparticles (G NPs). The presence of pymetrozine could rapidly induce the aggregation of G NPs, thereby resulting in red to deep blue colour change. The concentration of pymetrozine was determined with a limit of detection lower than 1×10-6 M by the naked eye and was further...
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