The degradation of contaminant, PAHs is very ineffective and slow. Beside, during soil composting process, the toxicity of PAHs significantly increased with its increased molecular weight. More difficulty, the biodegradation of molecules containing five or more benzene rings of PAHs molecules is ver.....
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The performance of wireless communication systems can be greatly enhanced by utilizing antenna diversity or smart antennas. Such antenna systems make use of multiple antennas and they have been incorporated into the base stations of most mobile telephone systems in use today. However, adoption of .....
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