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A method was developed for isolation of aromatic polycyclic hydrocarbons (APH) from atmospheric air. Air samples were filtered through Whatman GF/C filter papers, subsequently extracted with benzene. Aromatic polycyclic hydrocarbons were isolated from the extract, purified by column chromatography on aluminium oxide and determined by gas chromatography.(More)
Abmoocb We consider the design of P spacetime coded modulation transmit-receive system emplofiog symbol Interleaving. An iterative receiver is derived based on the ~~prctation-marimization algorithm with soft output symbol decoding and estimation of noise variance. The proposed system demonstrates very good performance ever fast fading unLnom channels in(More)
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