Similarly, the correlation between road traffic noise exposure at school and nitrogen dioxide was also modest (r = 0.46, P < 0.01).
> -wrap-foot> There were no significant associations of nitrogen dioxide at school with children's psychological distress, systolic blood pressure, diastolic blood pressure, or self-rated health either before or after adjustment for aircraft noise and road traffic noise at school (Table 4).
We found no evidence that air pollution moderated associations, with the exception that road traffic noise exposure was associated with poorer recognition memory for children with lower nitrogen dioxide exposure at school compared with children with higher nitrogen dioxide exposure at school.
The two, who met as high school freshmen in 1994, say liquid nitrogen is obtainable at welding-supply stores, though three such places in New York City flatly said they would not sell it when this reporter inquired by phone.
Of the 416 schools in the city of Barcelona, 36 were selected in order to obtain maximum contrast in air pollution levels [i.e., nitrogen dioxide (NO2)] at schools.
If secondary school science has left you colder than liquid nitrogen, this is the one book I could recommend to rekindle your passion and sense of wonder at human ingenuity and nature's quirky strangeness.
Spearman's rho bivariate correlations were calculated to assess the strength of association between nitrogen dioxide and the noise exposure at school measures, as nitrogen dioxide was not normally distributed.
A northern California study found that schools downwind from busy freeways had higher concentrations of oxides of nitrogen (NOx) and higher asthma prevalence rates (Kim et al. 2004).
Sylvia and volunteers of the project will plant trees of peace, fruit trees, and nitrogen fixers such as mangoes, jack fruit, and avocado in schools.
An earlier study from Japan showed positive associations between community nitrogen dioxide levels measured at a central monitor and asthma incidence in school children (Shima et al. 2002).
