No coin nor oath required. For personal study only.
some heavier olefins. The Total Petrochemicals/UOP Olefin Cracking process converts these heavier olefins predominantly to propylene with some associated ethylene. By integrating the two processes, Total Petrochemicals and UOP will demonstrate a very significant increase in the production of light olefins, particularly propylene.
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In other, unrelated news, Shell has entered into a fiveyear supply contract with British Gas Trading Ltd to deliver approximately 4.5 billion m 3 of gas to Centrica, starting 1 October 2004. The agreement will deliver gas to the UK's National Balancing Point. ## CHEVRON-TEXACO WINS EXPLORATION LICE
This report investigates different options for using human papillomavirus (HPV) testing in cervical cancer prevention. These options are evaluated by a stochastic model of the progression of pre-malignancy and its relationship to HPV infection. Three screening policies are compared: 2 based on cytol