Adriana Cavallaro

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A fully integrated sigma-delta fractional-N frequency synthesizer for Bluetooth application is presented. The synthesizer, suitable to be used with a wide range of crystal oscillators, features a settling time of 70 /spl mu/s, a phase noise of -80 dBc/Hz and -125 dBc/Hz at 100 KHz and 1 MHz offset respectively. The fractional spurs are -63 dBc at 1 MHz(More)
Produced waters from the Barrancas and Chihuido de la Salina (CHLS) fields in Argentina had higher concentrations of sulfate than were found in the injection waters, suggesting that the formation waters in these reservoirs had a high sulfate concentration and that sulfate-reducing bacteria were inactive downhole. Incubation of produced waters with produced(More)
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