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To protect user privacy in mobile peer to peer (MP2P) networks, a network coding-based mutual anonymity communication protocol (NMA) is proposed. Our contributions are described as below. We first design a network coding scheme which can defend against various omniscient adversary attacks. Then a novel anonymous communication protocol is presented to meet the anonymity requirement for MP2P applications...
In this paper, we have presented a new method to remove Cr (VI) ions from aqueous solution. Chitosan and ferrous ions were added together to the chromium-contained solution, through two-step pH adjust, 0.5 g·l-1 chitosan and 2.0 g·l-1 FeSO4·7H2O could reduce Cr (VI) ions from 100 mg·l-1 to 0.01 mg·l-1. As compared with chitosan and ferrous alone used to remove Cr (VI), for 100 mg·l-1 Cr (VI) solution,...
Hexagonal CdSe and hexagonal CdS nanoparticles have been prepared using Cd(Ac) 2 and less hazardous elemental Se or S as precursors, respectively, with the aid of ultrasound irradiation under an atmosphere of H 2 /Ar (5/95, V/V). The products consist of 7-10nm nanocrystallites which aggregated in the form of polydispersive nanoclusters with sizes in the range 30-40nm in the case of...
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