Third pipe water recycling

Water-pipe smoking: a threat never realized.

Deep water recycling through time

We investigate the dehydration processes in subduction zones and their implications for the water cycle throughout Earth's history. We use a numerical tool that combines thermo-mechanical models with a thermodynamic database to examine slab dehydration for present-day and early Earth settings and its consequences for the deep water recycling. We investigate the reactions responsible for releasi...

Water pipe smoking: not risk free.

F or young adults who frequent hookah bars, water pipe smoking leads to elevated levels of nicotine, cotinine, tobacco-related carcinogens, and volatile organic compounds (VOCs) in urine. These findings, published May 16 in Cancer Epidemiology, Biomarkers, and Prevention, raise alarms about a practice rapidly gaining in popularity. " We should forget the myth that hookah smoking is not harmful,...

Water-pipe smoking among North American youths.

OBJECTIVES The objectives of this analysis were to identify the sociodemographic characteristics of water-pipe users in a North American context and to describe concurrent psychoactive substance use. METHODS Data on sociodemographic characteristics, water-pipe smoking, and use of other psychoactive substances were collected in 2007 through mailed self-report questionnaires completed by 871 yo...

Gray cast-iron water pipe metallurgy

The results of a metallographic study of grey cast iron water pipes are reported. These pipes had been installed between 1885 and 1973 in eight different water systems. Each pipe had been extracted during scheduled maintenance or failure repairs to provide data for a larger study to produce a methodology for determining the residual life of grey cast iron pipes. This metallographic study was co...