BACKGROUND During the summer of 2003 numerous fires burned in British Columbia, Canada. OBJECTIVES We examined the associations between respiratory and cardiovascular physician visits and hospital admissions, and three measures of smoke exposure over a 92-day study period (1 July to 30 September 2003). METHODS A population-based cohort of 281,711 residents was identified from administrative...

An extensive sand flux monitoring network was installed on the dry lake bed at Owens Lake, California to determine hourly PM-10 emissions. The network consisted of 135 co-located electronic and passive sand flux samplers covering 135 square kilometers of the lake bed. The network measured the hourly sand flux at each site for 30 months. Previous researchers found that PM-10 emissions due to win...

The Western Treatment Plant (WTP) is one of Australia’s largest and most unique wastewater treatment plants (WWTP) treating over 52% of Melbourne’s sewage in a series of large lagoons. WTP has an existing, comprehensive Environmental Improvement Plan in place, which includes an ongoing focus on odour management in the context of a recently completed significant program of upgrade works that hav...

در این تحقیق به مقایسه تحلیلی و عددی آبشار جریان برگشتی مدل R با آبشارهای Q QI سیستم‌­های چندجزیی پایدار پرداخته می‌­شود. راستا برای اولین بار کدهای جهت طراحی منظور کد نرم‌افزار متلب نوشته شده‌­اند. نتایج نشان می‌­دهد که دو جزء 1k 2k از خوراک Nc جزء، تعداد معدودی قابل تعریف است همگی حالات خاصی می­‌باشد. هم‌­چنین یافته‌­ها مجموع مقدار برش جزیی همیشه برابر یک است. طریق داده می‌­شود صورتی میانگین ...