Olivia Krokos, Isabel Brandhorst, Lennart Seizer, Caterina Gawrilow, Johanna Löchner
Improving mental health by improving the mental health literacy? Study protocol for a randomised controlled evaluation of an e-mental health application as a preventive intervention for adolescents and young adults
Internet interventions
14week air quality study characterizing indoor outdoor concentrations 18 vocs four el paso texas elementary schools conducted spring 2010 three schools area high traffic density fourth school considered background school situated area affected minimally stationary mobile sources air pollution passive samplers deployed monitoring analyzed gcms differences concentration profiles btex species high low traffic density schools confirmed predefined exposure patterns toluene predominant compound within btex group 96hr average outdoor concentrations varied 116 425 gm3 across four schools outdoor btex species strongly correlated 063 r 100 p 005 suggesting common source vehicular traffic emissions expected strength associations compounds intense three highexposure schools contrast lowexposure school corroborated results obtained btex interspecies ratios toluene benzene p xylenes ethylbenzene certain episodic events study period resulted elevated concentrations vocs npentane indoor concentration compounds known indoor sources pinene dlimonene pdichlorobenzene chloroform generally higher corresponding outdoor concentrations cleaning agents furniture polishes materials used arts crafts activities hotwater usage deodorizing cakes used urinal pots likely major sources high indoor concentrations finally retrospective assessment average ambient btex concentrations last twenty years suggest gradual decrement border region