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OBJECTIVE To determine the prevalence of smoking among medical students at the medical college at King Fahad Medical City in Riyadh, and assess the association between smoking and socio-demographical factors, smoking contacts, reasons for smoking and attempts to quit. MATERIALS AND METHODS Cross-sectional survey in which anonymous, self-administered(More)
A large number of theoretical and experimental studies have shown that the performance of kerosene combustion increases significantly if combustion is being assisted by the addition of hydrogen to the fuel/air mixture during the combustion process. It reduces the amount of CO, CO 2 and NO x emissions, while increasing the flame stability limits. It also(More)
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