10 documents found, page 1 of 1

Rainfall events and daily mortality across 645 global locations: two stage time...

Objective: To examine the associations between characteristics of daily rainfall (intensity, duration, and frequency) and all cause, cardiovascular, and respiratory mortality. Design: Two stage time series analysis. Setting: 645 locations across 34 countries or regions. Population: Daily mortality data, comprising a total of 109 954 744 all cause, 31 164 161 cardiovascular, and 11 817 278 respiratory deaths fro...

Assessment of indoor air exposure among newborns and their mothers: Levels and ...

Significant efforts have been directed towards addressing the adverse health effects of atmospheric particles, emphasizing the relevance of indoor exposure. Homes represent an indoor environment where human spend the majority of their time. Thus, the objective of this work was to concurrently assess different matrix of indoor particles considering both mass (PM10, PM2.5) and number (N20-1000) concentrations in ...

Air pollution: A public health approach for Portugal

At the global level, several epidemiological studies have conclusively pointed out the associations between short-term exposure to air pollution and acute health effects, and long-term exposure with adverse health effects such as premature mortality from severe respiratory and cardiovascular diseases. This study intended to characterize exposures and their adverse health effects. Three independent sets of vecto...

Carcinogenic polycyclic aromatic hydrocarbons in classrooms of schools: risk as...

This study evaluated risks associated with inhalation exposure to carcinogenic PAHs for populations of primary schools teachers. Ten carcinogenic (probable, possible) PM2.5-bound PAHs were collected in indoor air of 9 classrooms at four Portuguese primary schools (PSC-PSR) during winter-spring 2014. The highest total levels of ten carcinogenic (Σ10PAH = 21.3-25.6 ng m-3) were found in classrooms at a school wit...

Children exposure to indoor ultrafine particles in urban and rural school envir...

Extended exposure to ultrafine particles (UFPs) may lead to consequences in children due to their increased susceptibility when compared to older individuals. Since children spend in average 8 h/day in primary schools, assessing the number concentrations of UFPs in these institutions is important in order to evaluate the health risk for children in primary schools caused by indoor air pollution. Thus, the purpo...

Polycyclic Aromatic Hydrocarbons in Educational Settings: a Comparison between ...

How indoor air quality changed in primary schools: a 4 years follow-up study

Exposure of children to ultrafine particles in primary schools in Portugal

Children spend a large part of their time at schools, which might be reflected as chronic exposure. Ultrafine particles (UFP) are generally associated with a more severe toxicity compared to fine and coarse particles, due to their ability to penetrate cell membranes. In addition, children tend to be more susceptible to UFP-mediated toxicity compared to adults, due to various factors including undeveloped immune...

Potassium urinary excretion and dietary intake: a cross-sectional analysis in 8...

Background: Data from studies assessing the intake of potassium, and the concomitant sodium-to-potassium ratio are limited. The aim of this study was to evaluate potassium and sodium-to-potassium ratio intake in 8-10 year-old children. Methods: A cross-sectional survey was carried out from January to June 2014 and data from 163 children (81 boys) were included. Potassium intake was estimated by 24-h urine colle...

Assessment of indoor airborne contamination in a wastewater treatment plant

The main objective of this work was to quantify and characterize the major indoor air contaminants present in different stages of a municipal WWTP, including microorganisms (bacteria and fungi), carbon dioxide, carbon monoxide, hydrogen sulfide ammonia, formaldehyde, and volatile organic compounds (VOCs). In general, the total bacteria concentration was found to vary from 60 to > 52,560 colony-forming units (CF...